Tessian are a cyber security vendor offering machine intelligent email security to protect enterprise networks. Their machine learning systems sit within the email network and scan all email communications, to learn patterns and identify anomalies. This allows the platform to automatically prevent spear phishing, misaddressed emails, unauthorized emails (data loss) and non-compliance. It uses advanced machine learning algorithms. There are four modules that make up Tessian’s platform. Guardian, which prevents email from being sent to the wrong recipient. Enforcer which protects sensitive information from being leaked to personal or unauthorized accounts. Constructor, which allows the implementation of customized security features.