Dropbox Says Hackers Breached Digital-Signature Product

Dropbox Inc. said its digital-signature product, Dropbox Sign, was breached by hackers, who accessed user information including emails, user names and phone numbers.

The software company said it became aware of the cyberattack on April 24, sought to limit the incident and reported it to law enforcement and regulatory authorities.

“We discovered that the threat actor had accessed data related to all users of Dropbox Sign, such as emails and user names, in addition to general account settings,” Dropbox said Wednesday in a regulatory filing. “For subsets of users, the threat actor also accessed phone numbers, hashed passwords, and ...