Canonical, the company behind Ubuntu, has warned that there has been a security breach on the Ubuntu Forums site, resulting in the theft of two million members' usernames, IP addresses, and email addresses:
At 20:33 UTC on 14th July 2016, Canonical’s IS team were notified by a member of the Ubuntu Forums Council that someone was claiming to have a copy of the Forums database.
After some initial investigation, we were able to confirm there had been an exposure of data and shut down the Forums as a precautionary measure. Deeper investigation revealed that there was a known SQL injection vulnerability in the Forumrunner add-on in the Forums which had not yet been patched.
Yes, you read that correctly. A patch was available, but no-one bothered to install the patch at Ubuntu Forums.
What a goof. If you don't patch the software running on your website, don't be surprised if a hacker compromises your system and makes off with your customer's data.
If you think you may have heard a similar story in the past, your memory isn't deceiving you. Ubuntu Forums was previously hacked in 2013.