Obsidian Security Browser Extension vs Permiso AI Identity Security: Side-by-Side Comparison (2026)

Short answer

Mid-market and enterprise security teams drowning in phishing bypasses and shadow SaaS will find real value in Obsidian Security Browser Extension's AiTM detection running client-side, where most EDR misses it. The tool covers three NIST CSF 2.0 areas that matter here: identity threat detection (PR.AA), data loss prevention (PR.DS), and continuous monitoring (DE.CM), which means you're not just blocking attacks but actually seeing what users are exposing. Skip this if your workforce is mostly on unmanaged devices or you need mobile coverage; browser extension reach only goes so far. Enterprise and mid-market security teams drowning in identity sprawl across human, machine, and AI accounts will find real value in Permiso AI Identity Security because it actually maps non-human identities that most tools ignore. The Universal Identity Graph tracks access across authentication boundaries where lateral movement happens, and the platform catches stale accounts and overly permissive entitlements through behavioral analysis rather than rules. Skip this if your identity program is still primarily focused on human user access; Permiso's strength in AI and machine identity visibility won't justify the investment until you have governance problems at that layer.