https://blog.it-learn.io/tags/token-theft/Recent content in Token-Theft on it-learn.io | IT, Networking & Cybersecurity BlogHugoen-usSat, 25 Apr 2026 00:00:00 +0000https://blog.it-learn.io/posts/2026-04-25-oauth-token-theft-hijacking-app-permissions/Sat, 25 Apr 2026 00:00:00 +0000https://blog.it-learn.io/posts/2026-04-25-oauth-token-theft-hijacking-app-permissions/<p>OAuth 2.0 was designed to solve a real problem: letting users grant third-party applications access to their resources without sharing their passwords. The protocol achieved that goal. What it did not anticipate was an ecosystem of high-value cloud identities, loosely governed application registrations, and attackers sophisticated enough to abuse the delegation model itself.</p> <p>OAuth token theft attacks do not require stealing a password. They do not require bypassing MFA. In the most effective variants, they use Microsoft&rsquo;s own legitimate infrastructure — devicelogin.microsoft.com — as the delivery mechanism. Understanding these attacks means understanding how OAuth&rsquo;s trust model can be inverted.</p>