Unknown hacker hacked into official GitHub account of Canonical, the company behind the Ubuntu Linux project and created 11 new empty repositories. Hackers used a Canonical owned GitHub account whose credentials were compromised to unauthorizedly access Canonical’s Github account. The company is currently reviewing the source code available on GitHub to investigate the extent of the breach and have promised to share more details about the incident shortly. Last year, Gentoo Linux distribution was also hacked using password-guessing attack, and attackers successfully managed to replace the content of its repositories with malware.
Source: https://thehackernews.com/2019/07/canonical-ubuntu-github-hacked.html