Attic M365 FREE vs Obsidian Browser Ext. for SaaS Spear Phishing: Side-by-Side Comparison (2026)

Attic M365 FREE

Startup and SMB security teams protecting Microsoft 365 will benefit most from Attic M365 FREE because it stops AiTM phishing attacks that bypass MFA, the attack class traditional email filters miss entirely. The tool deploys in five minutes with no payment required, making it immediately useful for resource-constrained teams, and its real-time detection of fake login pages covers both NIST PR.AA and DE.CM functions simultaneously. Skip this if your organization needs protection beyond Microsoft 365 or runs a heterogeneous SaaS stack; Attic is deliberately focused on one platform and one threat vector.

Obsidian Browser Ext. for SaaS Spear Phishing

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.