Slack's private GitHub code repositories stolen over holidays


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Apr 24, 2016
Slack suffered a security incident over the holidays affecting some of its private GitHub code repositories.

The immensely popular Salesforce-owned IM app is used by an estimated 18 million users at workplaces and digital communities around the world.

BleepingComputer has come across a security incident notice issued by Slack on December 31st, 2022.

The incident involves threat actors gaining access to Slack's externally hosted GitHub repositories via a "limited" number of Slack employee tokens that were stolen.

While some of Slack's private code repositories were breached, Slack’s primary codebase and customer data remains unaffected, according to the company.

Slack has since invalidated the stolen tokens and says it is investigating "potential impact" to customers.

At this time, there is no indication that sensitive areas of Slack's environment, including production, were accessed. Out of caution, however, the company has rotated the relevant secrets.

"Based on currently available information, the unauthorized access did not result from a vulnerability inherent to Slack. We will continue to investigate and monitor for further exposure," states Slack's security team.

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