# Technical University of Munich (TUM) IT security incident: myTUM passwords stolen, TUMonline taken offline · pwn.watch > On Nov 6 2026 the Technical University of Munich (TUM) disclosed an IT security incident. Unknown attackers compromised the myTUM portal and stole passwords for the central TUM login (login.tum.de, TUMonline and related systems) for everyone registered with myTUM, including a system-administrator credential for TUMonline. Those credentials were used to attack the central campus management system TUMonline, which TUM then took offline. Affected data for all impacted people may include the TUM account password, name, home address and date of birth; employees may also have work address and work phone exposed; students may also have student ID, degree program and semester count exposed. After reviewing largely logged TUMonline access, TUM currently assumes grades and college applications were not compromised and is still investigating. TUM suspended affected accounts, reported the incident to the Bavarian State Commissioner for Data Protection, filed a criminal complaint, and told users to change their TUM password (options by Monday), enable MFA, and change the same password elsewhere if reused. MFA-protected accounts were protected from this attack. Page: https://pwn.watch/i/tum-it-security-incident-mytum-tumonline-nov-2026 · generated 2026-11-06T18:34:57.853Z ## Status - Severity: high · status: live · patch: partial - Product: TUM myTUM portal and TUMonline campus management / central login (login.tum.de) - Started: 2026-11-06 - Affected: TUM myTUM portal and related central login accounts for registered employees and students; TUMonline campus management system (taken offline after admin credential abuse) - Fixed in: No public vendor patch: TUM suspended affected accounts, took TUMonline offline, is rolling out mandatory password changes and MFA; MFA-protected accounts were not affected by the password theft path ## Follow this incident - RSS (one item per update): https://pwn.watch/i/tum-it-security-incident-mytum-tumonline-nov-2026/feed.xml - JSON Feed: https://pwn.watch/i/tum-it-security-incident-mytum-tumonline-nov-2026/feed.json - Full data (timeline, sources, posts, agentBrief): https://pwn.watch/i/tum-it-security-incident-mytum-tumonline-nov-2026.json - This file: https://pwn.watch/i/tum-it-security-incident-mytum-tumonline-nov-2026/llms.txt ## Updates (newest first) - 2026-11-06: TUM publishes a press update (status Friday Nov 6 2026, 12:20 p.m.): attackers stole myTUM passwords for central TUM login, used a TUMonline admin credential, and TUM took TUMonline offline; password/PII impact described; criminal complaint and data-protection report filed. (https://www.tum.de/en/news-and-events/all-news/press-releases/details/it-security-incident-at-tum) - 2026-11-06: Hacker News discussion of the TUM IT security incident press release. (https://news.ycombinator.com/item?id=50392125) ## Fix brief # Security brief: Technical University of Munich (TUM) IT security incident: myTUM passwords stolen, TUMonline taken offline Source: https://pwn.watch/i/tum-it-security-incident-mytum-tumonline-nov-2026 · status: live · severity: high · updated Nov 6, 2026, 16:19 UTC ## Patch status **PARTIALLY PATCHED: some fixes exist, but not every affected branch/product is covered. Check carefully and apply mitigations where no fix exists.** ## What it is On Nov 6 2026 the Technical University of Munich (TUM) disclosed an IT security incident. Unknown attackers compromised the myTUM portal and stole passwords for the central TUM login (login.tum.de, TUMonline and related systems) for everyone registered with myTUM, including a system-administrator credential for TUMonline. Those credentials were used to attack the central campus management system TUMonline, which TUM then took offline. Affected data for all impacted people may include the TUM account password, name, home address and date of birth; employees may also have work address and work phone exposed; students may also have student ID, degree program and semester count exposed. After reviewing largely logged TUMonline access, TUM currently assumes grades and college applications were not compromised and is still investigating. TUM suspended affected accounts, reported the incident to the Bavarian State Commissioner for Data Protection, filed a criminal complaint, and told users to change their TUM password (options by Monday), enable MFA, and change the same password elsewhere if reused. MFA-protected accounts were protected from this attack. Severity detail: Central university login passwords stolen for all myTUM registrants and used to attack TUMonline; PII (name, address, DOB) may be exposed; grades/applications currently assumed not taken; MFA accounts protected - Product: TUM myTUM portal and TUMonline campus management / central login (login.tum.de) ## Affected versions - TUM myTUM portal and related central login accounts for registered employees and students - TUMonline campus management system (taken offline after admin credential abuse) ## Check whether you're affected No generic command applies (the product is a hosted service, appliance or desktop app). Check the installed version in its admin UI / About screen and compare with the versions above. ## Fix Upgrade to one of these fixed versions (or later on the same branch): - No public vendor patch: TUM suspended affected accounts, took TUMonline offline, is rolling out mandatory password changes and MFA; MFA-protected accounts were not affected by the password theft path After upgrading, re-run the checks above and redeploy/restart the affected services. ## Mitigations The data marks this as partial. Until every affected component is fixed, apply the vendor mitigations from the advisories below (restrict network exposure of the affected service, disable the vulnerable feature if the advisory allows). ## Secrets to rotate This incident involves possible credential exposure. Rotate any credentials (API keys, tokens, env vars, SSH keys) that were present on affected systems or in affected builds while vulnerable/compromised versions were installed, and review access logs. ## Specific notes New 2026-11-06. Breach (university). Do not merge with other DE university incidents. Status snapshot from TUM page as of Fri Nov 6 2026 12:20 p.m. ## Latest updates - Nov 6, 2026: TUM publishes a press update (status Friday Nov 6 2026, 12:20 p.m.): attackers stole myTUM passwords for central TUM login, used a TUMonline admin credential, and TUM took TUMonline offline; password/PII impact described; criminal complaint and data-protection report filed. - Nov 6, 2026: Hacker News discussion of the TUM IT security incident press release. ## Advisories - [IT Security Incident at TUM](https://www.tum.de/en/news-and-events/all-news/press-releases/details/it-security-incident-at-tum) (Technical University of Munich) ## Write-ups & news - [IT Security Incident at TUM (discussion)](https://news.ycombinator.com/item?id=50392125) ## Caveats Primary source is TUM's own press page, updated continuously. Re-check for password-reset instructions, MFA rollout, and any revision of the TUMonline data-impact assessment. --- Machine-readable: https://pwn.watch/i/tum-it-security-incident-mytum-tumonline-nov-2026.json · all incidents: https://pwn.watch/incidents.json. Verify against the vendor advisory before changing production systems.