From bleepingcomputer.com
In a short announcement today, Stack Overflow informs that it was the target of an attack that resulted in hackers accessing its production systems.
The website is currently online and the few public details offered in a brief message say that an investigation revealed that “some level of production access was gained on May 11.”
User data not affected
It is unclear how the intruders were able to access Stack Overflow’s internal network but the measures taken following the discovery of the breach include patching all known vulnerabilities.