Attic Bouncer vs Castle Device Intelligence: Side-by-Side Comparison (2026)

Attic Bouncer

Startup and SMB security teams that lack dedicated phishing infrastructure will find Attic Bouncer's real-time interception of fake Microsoft 365 login pages worth the browser plugin friction. The tool covers three NIST CSF 2.0 functions,identity management, continuous monitoring, and user awareness,and catches the redirect attacks and credential theft attempts that traditional email filters routinely miss. Skip this if your organization has already standardized on advanced authentication like passwordless sign-in or conditional access policies that block anomalous logins at the platform level; Attic Bouncer is a band-aid for missing MFA enforcement, not a replacement for it.

Castle Device Intelligence

SMB and mid-market teams protecting high-value accounts from credential stuffing and account takeover will see immediate ROI from Castle Device Intelligence, since its 99.5% accuracy device fingerprinting catches stolen credentials being used from unfamiliar devices in real time. The 150ms API response time means you're not adding latency to login flows, and the cookie-independent identification works even when attackers clear browser data. Skip this if you need behavioral analytics or post-breach forensics; Castle is built for preventing account compromise at the perimeter, not investigating it after the fact.