From bleepingcomputer.com
In an embarrassing security incident, the WeTransfer file sharing service announced that for two days it was sending it’s users shared files to the wrong people. As this service is used to transfer what are considered private, and potentially sensitive files, this could be a big privacy issue for affected users.
Starting today, users began to receive emails from WeTransfer [1, 2, 3] stating that on June 16th and 17th, files sent using the WeTransfer service were also delivered to people that they were not meant to go to.
The email goes on to say that the team doesn’t know what happened and that they are working to contain the situation.