The nonprofit that oversees Wikipedia briefly enforced a 'read-only' mode on Thursday morning as users spotted code designed to delete articles and place Russian text in the edit summary.

The Wikimedia Foundation suffered a security incident today after a self-propagating JavaScript worm began vandalizing pages and modifying user scripts across multiple wikis.

The nonprofit that oversees Wikipedia briefly enforced a 'read-only' mode on Thursday morning as users spotted code designed to replace articles with Russian text.

The view gets the content of the encyclopedia entry by calling the appropriate util function. If an entry is requested that does not exist, the user is presented with ...

A serious security incident occurred across Wikimedia projects, including the online encyclopedia Wikipedia, on March 5, 2026. The issue compromised an administrator account at the Wikimedia ...