Human Risk Score Drives New Security Controls at Mimecast

Mimecast Uses AI and Behavior Scoring to Reduce Attacks, Extends to Slack, Teams Michael Novinson (MichaelNovinson) • January 20, 2026

The cybersecurity industry is structured around network, application and data defenses, but the most vulnerable part of the system is still the person behind the keyboard.

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The clicking of malicious links, misuse of credentials and inadvertently leaking of sensitive data remains a primary source of risk, said Mimecast CEO Marc van Zadelhoff. In response, Mimecast now collects behavioral signals from across its ecosystem and partner tools to identify which users pose the most risk, and then assigns risk scores to individual users, much like a credit score for cybersecurity behavior (see: Mimecast Acquires Aware to Advance Collaboration Security).

"Human risk is accentuated now because often agents are acting as humans with passwords and identity and credentials and are able to ...