Hack on Stack Overflow exposes private data for ~250 users

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Stack Overflow said hackers obtained private data for about 250 users after breaching the site and spending the next week escalating their access.

“While our overall user database was not compromised, we have identified privileged Web requests that the attacker made that could have returned IP address, names, or emails for a very small number of Stack Exchange users,” Mary Ferguson, Stack Overflow VP of Engineering, wrote in a blog post published Friday. “Our team is currently reviewing these logs and will be providing appropriate notifications to any users who are impacted.”

In an update, Ferguson said investigators now estimate the number at 250 public network users. Officials for the developer community site will notify those affected. The company first disclosed the breach on Thursday in a four-sentence post that said “some level of production access was gained on May 11.”