Menlo Security's 2026 Browser Threat Report Finds 1 in 5 Enterprise Phishing Attacks Go Completely Undetected by the Security Tools Built to Stop Them
New research documents 4,937 zero-day attacks blocked before reputation filters knew they existed, 115,842 evasive phishing attacks purpose-built to bypass detection, and two Q1 2026 attacks stopped after every existing security tool saw nothing