On May 17, researchers at Tenable revealed that they had discovered a vulnerability in the Windows version of the desktop application for Slack, the widely used collaboration service. The vulnerability, in Slack Desktop version 3.3.7 for Windows, could have been used to change the destination of a file download from a Slack conversation to a remote file share owned by an attacker. This would allow the attacker to not only steal the files that were downloaded by a targeted user, but also allow the attacker to alter the files and add malware to them.
