Obsidian Browser Ext. for SaaS Spear Phishing vs Proofpoint Identity Threat Defense: Side-by-Side Comparison (2026)

Short answer

Security teams protecting SaaS environments from credential theft will find Obsidian Browser Ext. the rare phishing tool that actually stops attacks before the user submits credentials, thanks to real-time content analysis that catches zero-day spear phishing without network inspection. The NIST Adverse Event Analysis coverage means you get context around each blocked attempt,which users are targeted, which apps compromised,turning detection into actionable threat intel. Skip this if your org needs endpoint-to-network detection parity; Obsidian is browser-only and won't catch phishing that sidesteps the extension entirely. Mid-market and enterprise security teams that need to stop account takeovers before lateral movement happens should run Proofpoint Identity Threat Defense; it excels at detecting anomalous authentication patterns and compromised credentials in real time. The tool covers three of four NIST CSF 2.0 Detect and Respond functions, with particular strength in continuous monitoring and incident analysis, meaning you get fast detection paired with forensic depth. Skip this if your priority is identity governance or access provisioning; Proofpoint is purely defensive and assumes your directory and IAM systems are already in place.