Best 7 IAST Tools For Development Teams (2026)
We reviewed the leading IAST tools on instrumentation depth, the accuracy of vulnerability identification during active execution, and how well each integrates into existing testing pipelines without adding significant latency.
Written by
Caitlin Harris
Technical Review by
Laura Iannini
Quick Summary
Interactive Application Security Testing (IAST) tools instrument running applications during test execution to identify vulnerabilities from inside the application — combining the coverage of dynamic testing with the code-level precision of static analysis. IAST finds vulnerability classes that neither SAST nor DAST can reliably identify on their own. We reviewed the top tools and found Invicti, Acunetix, and BlackDuck Seeker to be the strongest on instrumentation depth and vulnerability identification accuracy.
Interactive application security testing sits in a unique position. It observes your code while it runs, catching vulnerabilities in ways static analysis alone cannot. The challenge is wading through the noise. IAST tools generate findings during runtime, but false positives consume development resources faster than bad code does.
You need IAST that confirms exploitability before alerting developers. You need remediation guidance detailed enough that developers actually fix issues instead of dismissing them as noise. You need a tool that plays well with your CI/CD pipeline without requiring extensive orchestration overhead. Get it wrong, and developers bypass security checks rather than wait for scanning to finish.
We evaluated seven IAST solutions across legacy and modern web applications, microservices architectures, and API-heavy environments. We evaluated proof-based scanning, runtime visibility, code-level accuracy, compliance reporting, and integration maturity. We reviewed customer experiences to see where vendor claims diverge from operational reality. The gap between marketing materials and what actually reduces remediation time is substantial.
This guide gives you the technical insights and decision framework to match the right IAST solution to your development maturity, application architecture, and security team size.
Our Recommendations
Based on our evaluation, here’s where each solution stands:
- Best For development and security teams who need accurate vulnerability detection without drowning in false positives: Invicti , Proof-Based Scanning confirms real vulnerabilities before alerting, reducing false positive noise Pinpoints issues to exact file and line numbers for faster developer remediation Single page applications require additional tuning compared to legacy web apps.
- Best For development and security teams working with Node: Acunetix , AcuSensor pinpoints vulnerabilities to exact source code lines for faster remediation API testing supports REST, SOAP, and GraphQL through definition file imports Deep scans on large applications consume significant system resources and time.
- Best For enterprises running microservices architectures who need vulnerability detection mapped directly to standards like OWASP Top 10, PCI DSS, and GDPR: BlackDuck Seeker , Sensitive data tracking verifies encryption and handling for PCI DSS and GDPR compliance Active verification confirms exploitability before alerting, reducing false positive volume Enterprise focus and compliance features may exceed needs for smaller teams.
- Best For DevOps and security teams who want vulnerability detection integrated directly into CI/CD pipelines without separate security scan cycles: Checkmarx One , uses existing functional tests for security analysis, eliminating separate scan cycles Query customization handles application-specific patterns and reduces false positives Some UX limitations and portal issues noted by customers.
- Best For development and DevOps teams who want security findings with enough context for developers to actually fix issues without security expertise: Contrast Security Assess , Live architecture visualization connects vulnerabilities to actual code execution paths Security Trace format explains fixes in terms developers understand without security expertise Language support for legacy applications and older framework versions is limited.
Invicti offers a combined dynamic (DAST) and true interactive (IAST) scanning solution to enhance application security. Their DAST scanner offers vulnerability coverage, accurate scanning, and deep contextual insight into each vulnerability. The IAST sensor, Invicti Shark, works alongside the DAST scanner to improve vulnerability detection while reducing false positives.
Invicti Key Features
Invicti’s IAST sensor provides better visibility into the backend of web applications, including unlinked and hidden files, by being deployed within the runtime environment. This enables more mapping and testing of every page, reducing potential attack points. Invicti also takes steps to eliminate false positives through their Proof-Based Scanning feature, which verifies identified vulnerabilities as real and exploitable.
The solution helps developers locate exact vulnerability locations faster by providing detailed information about the problem, often down to the specific file name and line number. This allows developers to focus more on product development and less on locating security issues. Invicti can also access local configuration files to identify misconfigurations and suggest best practice recommendations to prevent future vulnerabilities.
Our Take
We recommend Invicti for teams looking for combined DAST and IAST scanning with Proof-Based Scanning to verify vulnerabilities are real and exploitable. The Invicti Shark IAST sensor provides strong backend visibility, and the ability to pinpoint issues down to specific file names and line numbers saves developers significant time.
Strengths
- Combined DAST + IAST with Invicti Shark sensor for deeper detection
- Proof-Based Scanning verifies vulnerabilities are real and exploitable
- Pinpoints issues to specific file names and line numbers
- Scans unlinked and hidden files within the runtime environment
- Identifies misconfigurations with best practice recommendations
Cautions
- Pricing not publicly available; requires contacting sales for a quote
Acunetix’s vulnerability scanning platform is a DAST solution (black-box scanner) that transforms into an IAST solution (gray-box scanner) with the addition of Acunetix’s AcuSensor component. This solution works for applications written in Node.js, PHP, Java (including Spring framework), and ASP.NET.
Acunetix Key Features
Acunetix IAST with AcuSensor scans every file, including hidden and unlinked ones, providing users with increased visibility into the backend of their web applications. Acunetix can also import API definition files and links to test APIs using REST, SOAP, or GraphQL architecture.
By connecting to the code interpreter or compiler, AcuSensor can precisely identify the exact line of source code or location in a stack trace, making it easier for developers to fix vulnerabilities. AcuSensor also provides a full directory listing of the web application to ensure complete scanning, including hidden and unlinked files.
Our Take
Acunetix with AcuSensor offers a reliable way to protect web applications from potential threats. The ability to precisely identify the exact line of source code makes remediation faster for developers. The support for REST, SOAP, and GraphQL API testing is a strong addition for teams with complex API environments.
Strengths
- DAST transforms into IAST with AcuSensor component
- Pinpoints exact line of source code for faster remediation
- Scans hidden and unlinked files for complete coverage
- Supports REST, SOAP, and GraphQL API testing
- Full directory listing ensures no files are missed
Cautions
- IAST via AcuSensor limited to Node.js, PHP, Java, and ASP.NET
Black Duck Seeker
Black Duck Seeker is an IAST tool that monitors applications during testing to detect vulnerabilities, verify compliance, and track sensitive data flows. It was the first dedicated IAST solution on the market and uses patented active verification technology to confirm that detected vulnerabilities are actually exploitable. We think the sensitive data tracking capability sets this apart from other IAST tools, especially for organizations with PCI DSS, GDPR, or HIPAA compliance requirements.
Black Duck Seeker Key Features
Patented active verification automatically confirms whether detected vulnerabilities are exploitable, reducing false positives without manual triage. The sensitive data tracking feature monitors how PII, credentials, and financial data flow through your application, flagging unencrypted storage, improper logging, and insecure transmission. This maps directly to PCI DSS, GDPR, and HIPAA requirements. Seeker supports microservices architectures through correlation headers that trace requests across HTTP service calls, giving visibility into vulnerabilities that span multiple services. gRPC support extends this to modern service mesh environments. The platform integrates with CI/CD pipelines and pairs with Black Duck’s SCA and Coverity SAST for a combined application security testing suite. Runtime analysis requires no code changes; you deploy the agent alongside your application during QA or staging.
What Customers Say
The active verification approach gets praise for delivering confirmed results that development teams trust. Sensitive data flow tracking is valued by compliance-focused organizations. Integration with the broader Black Duck suite simplifies vendor management for teams already using Coverity or Black Duck SCA. Reviews note that deploying and configuring the agent across complex microservices environments requires careful planning, and the platform works best when integrated with structured QA testing workflows.
Our Take
We think Seeker works best for organizations where compliance drives security testing requirements. The sensitive data tracking is a genuine differentiator; most IAST tools find code vulnerabilities but do not track how sensitive data moves through your application. If your compliance team needs to demonstrate that PII is handled correctly across services, this provides that evidence automatically. For teams focused purely on vulnerability detection without compliance mapping, other IAST tools may offer simpler deployment.
Strengths
- Patented active verification confirms exploitability to reduce false positives
- Sensitive data tracking monitors PII, credentials, and financial data flows
- Microservices support with correlation headers across HTTP and gRPC calls
- Maps findings directly to PCI DSS, GDPR, and HIPAA compliance requirements
Cautions
- Reviews note agent deployment across complex microservices requires careful planning
- Works best with structured QA testing workflows rather than ad hoc testing
Checkmarx One
Checkmarx One is a cloud-native application security platform that unifies SAST, SCA, IAST, DAST, API security, IaC scanning, and container security in a single service. The IAST component works alongside Checkmarx SAST to correlate static findings with runtime behavior, confirming which vulnerabilities are actually exploitable in your running application. We think the unified platform approach makes this a strong choice for enterprises that want to consolidate multiple AppSec tools under one vendor.
Checkmarx One Key Features
The correlation engine connects SAST findings with IAST runtime data to prioritize vulnerabilities that are confirmed exploitable, reducing the backlog developers need to work through. Fusion scoring combines results from all scan types into a single risk score per finding, so teams focus on what matters most. The platform supports over 40 languages and frameworks. AI-powered remediation guidance provides fix suggestions contextualized to your codebase. Supply chain security covers open source risk, malicious packages, and license compliance. Native integration with GitHub, GitLab, Bitbucket, Azure DevOps, and Jenkins embeds scanning across the development lifecycle. The cloud-native architecture means no infrastructure to manage; Checkmarx handles scaling and updates.
What Customers Say
The unified dashboard and consolidated findings across scan types get praise for reducing tool sprawl. Fusion scoring helps teams prioritize effectively across large codebases. Support responsiveness earns positive marks. Something to be aware of is that the breadth of capabilities means initial configuration and policy setup take time, and pricing is typically enterprise-tier with annual contracts.
Our Take
We think Checkmarx One works best for enterprises consolidating their AppSec toolchain under a single platform. The IAST-to-SAST correlation is valuable because it answers the question static analysis alone cannot: is this vulnerability actually reachable at runtime? If your team is managing separate SAST, DAST, and SCA tools and wants one platform with unified prioritization, this delivers. For smaller teams or those needing only IAST, the full platform may be more than required.
Strengths
- IAST correlates with SAST findings to confirm which vulnerabilities are exploitable at runtime
- Fusion scoring unifies risk across all scan types for clearer prioritization
- Over 40 languages supported with AI-powered remediation guidance
- Cloud-native architecture with no infrastructure to manage
Cautions
- Reviews mention initial configuration and policy setup across all modules takes time
- Enterprise pricing with annual contracts may not suit smaller teams
Contrast Security Assess
Contrast Security Assess is a dedicated IAST platform that uses runtime instrumentation to detect vulnerabilities from inside your running application. Rather than scanning from outside, Assess deploys sensors that use aspect-oriented programming to observe code execution, data flow, and library usage in real time. We think this inside-out approach delivers more accurate results than traditional DAST with significantly less configuration overhead.
Contrast Security Assess Key Features
The instrumentation-based approach is the core differentiator. Sensors embed directly into your application runtime and observe every request, tracing data flow from input to output. This detects vulnerabilities like SQL injection, XSS, and insecure deserialization with full call stack context, showing developers exactly where the issue occurs in their code. Supported languages include Java, .NET Framework and Core, Node.js, Python, Ruby, and Go. The Security Trace format provides a complete map of how each vulnerability was triggered, giving developers everything they need to reproduce and fix the issue. SCA capabilities are built in, using runtime context to determine which vulnerable libraries are actually loaded and called, not just present in your dependency tree. Route coverage analysis shows which application paths have been tested and which have not, identifying gaps in your QA coverage. The platform integrates with CI/CD pipelines, ticketing systems, and WAFs.
What Customers Say
The accuracy of findings gets consistent praise, with teams reporting significantly fewer false positives than traditional DAST tools. The Security Trace format helps developers fix issues faster because they can see the exact data flow. Runtime SCA is valued for filtering out vulnerabilities in dependencies that are never actually executed. Reviews note that the sensor can add some performance overhead during testing, and teams need to plan agent deployment across their application environments.
Our Take
We think Contrast Assess works best for teams that want continuous vulnerability detection embedded into their testing process rather than periodic scan-and-fix cycles. The runtime instrumentation approach means every functional test your QA team runs also becomes a security test, which dramatically increases coverage without additional effort. The runtime SCA filtering is a practical differentiator because it tells you which dependency vulnerabilities actually matter. If your team is frustrated by DAST false positives or SAST findings that are not reachable at runtime, this addresses both problems.
Strengths
- Runtime instrumentation detects vulnerabilities from inside the application with full call stack context
- Supports Java, .NET, Node.js, Python, Ruby, and Go
- Runtime SCA identifies which vulnerable dependencies are actually loaded and called
- Route coverage analysis highlights untested application paths
Cautions
- Users report sensors can add performance overhead during testing
- Agent deployment requires planning across application environments
OpenText Core Application Security
OpenText Core Application Security is the cloud-delivered version of the Fortify application security platform, offering SAST, DAST, SCA, IAST, and mobile application security testing as a managed service. Each customer gets a dedicated tenant with isolated scanning infrastructure. We think the managed service model makes this a practical choice for organizations that want Fortify’s scanning depth without managing on-premises infrastructure.
OpenText Core Application Security Key Features
The IAST capability works alongside DAST scanning to instrument your application at runtime, catching vulnerabilities that external-only testing misses. The broader platform covers the full testing spectrum: SAST for source code analysis across 34-plus languages, DAST for web application and API scanning, SCA for open source risk, and mobile testing for iOS and Android. Version 26.2 added AI-powered scanning that extends coverage to 12 additional programming languages. Each tenant is isolated, which matters for regulated industries with strict data separation requirements. The managed service model means OpenText handles infrastructure, updates, and scaling. Integration with CI/CD pipelines, issue trackers, and the broader OpenText security portfolio is supported. Compliance reporting covers OWASP, PCI DSS, and industry-specific standards.
What Customers Say
The breadth of testing types available from a single platform gets praise from teams replacing multiple point solutions. The managed service reduces operational overhead compared to on-premises Fortify deployments. Tenant isolation is valued by regulated industries. Something to be aware of is that the platform’s depth means there is a learning curve for teams new to Fortify, and pricing is typically enterprise-level with annual commitments.
Our Take
We think Core Application Security works best for enterprises that want Fortify’s mature scanning technology delivered as a cloud service. If your organization already uses Fortify on-premises and wants to reduce infrastructure management, this is the natural migration path. The IAST component adds runtime validation to complement the strong SAST engine. For teams evaluating IAST specifically, the value here is in the broader platform rather than IAST as a standalone capability.
Strengths
- Full application security testing suite: SAST, DAST, SCA, IAST, and mobile in one managed service
- Dedicated tenant isolation for regulated industry requirements
- AI-powered scanning in version 26.2 extends coverage to additional languages
- Managed infrastructure eliminates on-premises deployment and maintenance
Cautions
- Reviews note a learning curve for teams new to the Fortify platform
- Enterprise-level pricing with annual commitments
HCL AppScan
HCL AppScan is an application security testing suite that includes SAST, DAST, IAST, and SCA capabilities. The IAST component uses a lightweight agent that instruments your application during testing to detect vulnerabilities from inside the runtime environment. We think AppScan’s strength is in the combined testing approach, where IAST findings correlate with SAST and DAST results to give teams a more complete and accurate picture of their application risk.
HCL AppScan Key Features
The IAST agent deploys alongside your application and monitors code execution during functional testing, catching issues like SQL injection, authentication flaws, and sensitive data exposure that external scanning alone misses. Correlation across SAST, DAST, and IAST findings reduces duplicates and helps teams prioritize confirmed vulnerabilities. AppScan supports deployment as cloud (AppScan on Cloud), on-premises (AppScan Enterprise), or desktop (AppScan Standard) depending on your infrastructure requirements. The platform covers over 30 programming languages and frameworks. Fix groups bundle related vulnerabilities so developers address root causes rather than individual symptoms. Integration with Jenkins, Azure DevOps, GitHub, and other CI/CD tools embeds testing into existing pipelines. Compliance reporting maps to OWASP Top 10, PCI DSS, DISA STIG, and other standards.
What Customers Say
The multiple deployment options get praise from organizations with specific infrastructure or data residency requirements. Fix groups are valued for reducing remediation effort by bundling related issues. The combined SAST, DAST, and IAST correlation provides higher confidence findings. Reviews mention that the interface can feel dated compared to newer cloud-native competitors, and configuring all scan types together requires investment in initial setup.
Our Take
We think AppScan works best for organizations that need flexible deployment options with combined testing methodologies. The cloud, on-premises, and desktop options mean you can match deployment to your compliance and infrastructure constraints. The IAST correlation with SAST and DAST results provides practical value by confirming which findings are real and reducing duplicate triage. If your team needs a single vendor for all four testing types with deployment flexibility, this is worth evaluating.
Strengths
- IAST correlates with SAST and DAST findings for confirmed, deduplicated results
- Cloud, on-premises, and desktop deployment options for flexible infrastructure needs
- Fix groups bundle related vulnerabilities to streamline remediation
- Compliance reporting for OWASP Top 10, PCI DSS, and DISA STIG
Cautions
- Users report the interface feels dated compared to newer cloud-native tools
- Reviews note configuring all scan types together requires investment in initial setup
Other Application Security Services
Monitors running applications to detect vulnerabilities in real time.
Developer-first SAST platform with real-time feedback and open-source scanning.
Mobile-focused IAST for secure DevOps and compliance.
Pipeline-first platform integrating code security across the SDLC.
What To Look For: IAST Solutions Checklist
When evaluating IAST solutions, we’ve identified seven key criteria. Here’s the checklist of questions you should be asking:
- Proof-Based or Active Verification: Does the tool confirm vulnerabilities are actually exploitable before alerting? Can it distinguish between real issues and theoretical risks? Can admins tune what constitutes proof?
- Code-Level Accuracy: Does the tool identify exact file names and line numbers? Can developers understand the vulnerability without security expertise? Does remediation guidance explain not just what is broken, but why and how to fix it?
- Application Architecture Support: Does it handle your application stack? Does it support single page applications? Can it analyze microservices data flows? How well does it handle modern frameworks versus legacy applications?
- CI/CD and IDE Integration: Can developers see results directly in their development environment? Does it fit your existing pipeline without requiring custom scripts? Can you enforce policies at the pull request level?
- Compliance Reporting: Does it map findings to compliance standards like PCI DSS or GDPR? Can you generate audit-ready reports without extra work? Does it track sensitive data handling?
- Performance Impact and Overhead: How much overhead does the IAST agent add to application runtime? Does scanning slow down your release cycle? Can you run continuous monitoring without impacting production performance?
- Scalability Across Environments: Does it handle large enterprise application portfolios? Can you manage multiple applications from one console? Does it work in cloud, on-premises, and hybrid environments?
Weight these criteria based on your environment. Organizations needing proof-based findings should prioritize accuracy and false positive elimination. Teams with compliance obligations should focus on reporting and data tracking capabilities. DevOps-heavy you should emphasize CI/CD integration and automated policy enforcement.
How We Compared The Best Interactive Application Security Testing (IAST) Tools
Expert Insights is an independent editorial team that researches, tests, and reviews cybersecurity and IT solutions. No vendor can pay to influence our review of their products. Our Editor’s Scores are based solely on product quality. Before testing, we map the full vendor market for each category, identifying all active vendors from market leaders to emerging challengers.
We evaluated seven IAST platforms across legacy web applications, modern single page applications, microservices architectures, and API-heavy environments. We assessed proof-based scanning accuracy, runtime visibility, code-level remediation guidance, CI/CD integration depth, and compliance mapping capabilities. Each product was tested in controlled environments simulating enterprise deployment scenarios, where we evaluated setup complexity, policy configuration and developer experience, plus operational overhead.
Beyond hands on testing, we conducted market research across the IAST market and reviewed customer feedback and developer interviews where possible to validate vendor claims against operational reality. We spoke with product teams to understand architecture decisions, roadmap priorities, and known limitations. Our editorial and commercial teams operate independently. No vendor can pay to influence our review of their products.
This guide is updated quarterly. For full details on our evaluation process, visit our How We Test & Review Products.
The Bottom Line
IAST success depends on matching the tool to your application architecture, team maturity, and how much configuration overhead you can absorb.
If eliminating false positives is your top priority, Invicti confirms exploitable vulnerabilities before alerting developers. The exact code line numbers speed remediation dramatically. Budget for enterprise pricing before committing.
If developer experience matters more than advanced features, Contrast Security Assess delivers runtime visualization and threat context that developers actually understand. Expect language and framework compatibility to be a factor for legacy applications.
If compliance requirements drive your security program, BlackDuck Seeker tracks sensitive data handling and maps findings to regulatory standards.
If you want unified scanning without separate tools, Checkmarx One combines SAST, SCA, and IAST into one platform. using existing functional tests for security analysis eliminates the tax on release cycles. The unified approach simplifies toolchain management significantly.
If your environment spans web, mobile, and API applications, HCL AppScan consolidates multi-platform testing into one system. IDE and pipeline integration makes security testing fit naturally into development workflows.
For enterprises needing consolidated SAST, DAST, and SCA with training resources, OpenText Core Application Security provides 24/7 support and over 100 hours of developer training. The multi-layered approach works well for larger teams with mature processes.
Read the individual reviews above to dig into deployment specifics, pricing, and the trade-offs that matter for your development environment.
FAQs
Everything You Need To Know About Interactive Application Security Testing Tools (FAQs)
Interactive Application Security Testing (IAST), also known as “grey-box testing”, is the process of testing an application or API for vulnerabilities in real time, while the app is being run by either a real user or an automated test runner that’s “interacting” with the app’s features and functionality. Most IAST solutions are designed to test web applications and APIs, rather than desktop or mobile applications.
Because IAST solutions analyze vulnerabilities in real-time, they can easily be integrated into a DevOps team’s CI/CD pipeline, without adding any extra time onto it. By carrying out IAST, DevOps teams can discover and fix any vulnerabilities before the app goes to market. This means that such vulnerabilities are much easier and less costly to fix. It also ensures that the application is secure before anyone actually deploys it—helping to prevent future users of the app from falling victim to potential data breaches.
Most traditional application security testing methods only test code from the outside, or they focus on static analysis—performing tests and scans on the app while it’s idle, rather than while it’s being run. However, testing an app from within and while it’s running—as IAST tools do—provides three main benefits:
- It enables DevOps teams to scan code that’s being used in production, helping to avoid false positives that may have already been addressed in another part of the code base
- Some IAST tools also come with integrated development environment (IDE) integrations, which enable DevOps teams to scan their code in development as well as in production; this enables them to “shift left” their security checks to an earlier stage in the development lifecycle, when issues are often easier and cheaper to fix
- IAST solutions are able to link vulnerability findings to the exact point in the source code where the vulnerability is, allowing for quick identification and remediation
However, IAST does also have some drawbacks. If an IAST solution doesn’t offer an IDE plugin, it can only test applications that have already been built. Additionally, IAST is programming language-dependent, so if your organization uses a less popular technology, it may not be compatible with an IAST tool.
Finally, IAST tools only scan code that’s actually executed during the test. This means that, if your tester forgets to test some functionality, the code behind that functionality may still have vulnerabilities in it when the code goes to market. To avoid this, we recommend deploying your IAST tool in a QA environment that runs automated, functional tests. This can help avoid human error and ensure that all of the app’s functionality is tested.
IAST tools scan the code of an application as it’s being executed. At their core, IAST tools are built upon sensor modules, which keep track of an application’s behavior while the tester is interacting with it. These sensors have access to the code itself, data flows and control flows, system configuration data, back-end connection data, and any web components. If the IAST tool detects a vulnerability within any of these areas—such as potential for an SQL injection, API keys being hardcoded in cleartext, or unencrypted connections—it alerts the DevOps team so they can quickly locate and remediate it.
There are type ways of implementing IAST sensors: you can either use invasive sensors, or non-invasive sensors. Most IAST tools use invasive sensors, which require the developer to make changes to the source code (a process known as “instrumentation”) in order for the sensors to work. This means that the organization has to maintain two separate versions of their source code—one with sensors and one without—which can lead to organizational complexity.
Non-invasive sensors, on the other hand, are not placed in the source code, so don’t require the source code to be modified for them to work. Instead, these sensors attach to the server-side runtime environment and analyze the code as it’s executed by the web server or application server.
There’s one more layer of complexity to IAST solutions—just as there are two types of IAST sensor, there are also two types of IAST itself: active and passive IAST. Active IAST is often called “DAST-induced IAST”, because it requires a Dynamic Application Security Testing (DAST) tool to work. The DAST tool activates the IAST sensors (which, with active IAST, are usually invasive sensors) to validate vulnerabilities that are found during the DAST tool’s attack simulations, which are run by an application security analyst. This type of IAST provides very accurate results, but it cannot be automated and requires its own testing environment. Active IAST tools also often don’t collate IAST and DAST data. For these reasons, active IAST isn’t suitable for large-scale or fast-paced DevOps environments.
Passive IAST, also known as “self-sufficient IAST”, was created to overcome the obstacles presented by active IAST. Instead of running dedicated tests or simulated attacks, it leverages all forms of functional testing to collect vulnerability data. This means that passive IAST can be manual or automatic—making it well-suited to fast-paced DevOps environments.
There are a few key features that you should look for in a strong IAST solution:
- A low false positive rate. Your IAST tool should only scan code that’s actually being used in production. This will help it to avoid false positives; some vulnerability scanning technologies scan code across different codebases, which opens up the opportunity for them to flag issues that have already been fixed elsewhere. By scanning code in production, your chosen IAST tool will only highlight genuine issues to you, helping save developer time and resources.
- Fast, automatic testing. Because IAST tools are usually used to test the security of applications that have already been built, it’s important that they’re able to scan large amount of code quickly. To enable this, you should look for a solution that provides automatic testing, with options to scan only new code or code that’s been edited since the last scan.
- Easy deployment. Your IAST solution should be ready to deploy out-of-the-box, with little to no need for custom configuration so that you can start scanning straight away. Deployment methods may include fully automated, manual, or Docker-based deployment.
- Real-time results. Your chosen IAST tool should provide feedback on any discovered vulnerabilities within seconds of finding them. This helps your developers to fix any issues quickly, so that your code is exposed to those vulnerabilities for as little time as possible.
- Vulnerability location pinpointing. IAST solutions have access to the application’s code, runtime control and data flow, memory and stack trace information, HTTP actions, and use of libraries and frameworks, they can pinpoint the exact source of any vulnerabilities they identify. The best IAST tools feed this information back to the developers so that they can locate and remediate the issue more quickly.
- CI/CD integration. Your IAST tool should integrate easily with your CI/CD tools, including standard build, test, QA, and bug tracking tools, without you having to spend lots of time configuring it or tuning it to reduce false positives. Depending on your specific use case, you may also wish to look for a solution that offers web APIs that enable you to integrate it into enterprise-specific tools, such as Jenkins builds.
- Compatibility with your application’s architecture. Your chosen solution should be able to support the architecture your application is built on, be it microservices-based, cloud-based, or standard architecture. If your application uses microservices, you should look for an IAST tool that allows API testing to ensure the security of those connections.
- Compatibility with multiple testing methods. Finally, your chosen IAST tool should be compatible with automated testing methods, manual QA/dev tests, unit testing, web crawlers, and any other testing methods you use.
IAST plays a crucial role in a comprehensive application security strategy by complementing other testing methods:
- SAST (Static Application Security Testing): IAST complements SAST by providing more accurate results and detecting vulnerabilities that SAST might miss due to its limited runtime visibility.
- DAST (Dynamic Application Security Testing): IAST offers more detailed information about the location and cause of vulnerabilities than DAST, enabling faster and more efficient remediation.
- Software Composition Analysis (SCA): IAST can work alongside SCA to provide a more complete view of application security, including vulnerabilities in both custom code and third-party libraries.
- Penetration Testing: IAST can help penetration testers by providing insights into application behavior and potential vulnerabilities, making their testing more targeted and effective.
By combining IAST with these other methods, organizations can achieve a more robust and well-rounded application security posture, reducing the risk of security breaches and ensuring the development of secure software.
Written By
Caitlin Harris is the Deputy Head of Content at Expert Insights. As an experienced content writer and editor, Caitlin helps cybersecurity leaders to cut through the noise in the cybersecurity space with expert analysis and insightful recommendations.
Prior to Expert Insights, Caitlin worked at QA Ltd, where she produced award-winning technical training materials, and she has also produced journalistic content over the course of her career.
Caitlin has 8 years of experience in the cybersecurity and technology space, helping technical teams, CISOs, and security professionals find clarity on complex, mission critical topics like security awareness training, backup and recovery, and endpoint protection.
Caitlin also hosts the Expert Insights Podcast and co-writes the weekly newsletter, Decrypted.
Technical Review
Laura Iannini is a Cybersecurity Analyst at Expert Insights. With deep cybersecurity knowledge and strong research skills, she leads Expert Insights’ product testing team, conducting thorough tests of product features and in-depth industry analysis to ensure that Expert Insights’ product reviews are definitive and insightful.
Laura also carries out wider analysis of vendor landscapes and industry trends to inform Expert Insights’ enterprise cybersecurity buyers’ guides, covering topics such as security awareness training, cloud backup and recovery, email security, and network monitoring. Prior to working at Expert Insights, Laura worked as a Senior Information Security Engineer at Constant Edge, where she tested cybersecurity solutions, carried out product demos, and provided high-quality ongoing technical support.
Laura holds a Bachelor’s degree in Cybersecurity from the University of West Florida.