Obsidian Security Browser Extension vs Semperis Lightning Intelligence: 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. SMBs and mid-market shops with hybrid AD and Entra ID environments should pick Semperis Lightning Intelligence because it actually maps exposure indicators across both forests and tenants in one dashboard, a visibility gap most identity tools leave open. The weekly posture scoring with trend lines gives you measurable week-to-week progress rather than point-in-time snapshots, and the collector-based Windows service deployment keeps friction minimal. Skip this if you need downstream response automation; Lightning Intelligence is strong on continuous monitoring and asset inventory (NIST ID.AM and DE.CM) but light on remediation workflows, so you're buying detection clarity, not a playbook executor.