Google patches two actively exploited Chrome vulnerabilities that could allow attackers to crash browsers or run malicious code. Billions of users urged to update.

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.