One in Five Browser Phishing Attacks Bypass Security Defences

Cybersecurity software often fails to detect phishing attacks targeting enterprise browser users, with Menlo Security's 2026 Browser Threat Report revealing that one in five attacks goes undetected. This issue arises as many cybersecurity tools are not designed to address threats operating within the browser session layer, where critical enterprise activities now occur.

The report emphasizes that attackers exploit human interactions with in-browser alerts, underscoring the need for organizations to enhance security measures at the browser level. Failure to adapt will leave enterprises vulnerable to evolving cyber threats.