Skip the navigation

Dropbox blames employee account breach for spam attack

The company said it plans to introduce new protections to guard against account compromises

By Jeremy Kirk
July 31, 2012 09:58 PM ET

IDG News Service - Dropbox said Tuesday one of its employee's accounts was compromised, leading to a raft of spam last month that irritated users of the cloud-storage service.

A stolen password was used to access the employee's account, which contained "a project document with user email addresses," Dropbox engineer Aditya Agarwal wrote on the company's blog.

"We believe this improper access is what led to the spam," Agarwal wrote. "We're sorry about this, and have put additional controls in place to help make sure it doesn't happen again."

The company also found that usernames and passwords that had been stolen from other websites were used to access "a small number of Dropbox accounts," Agarwal wrote. Hackers commonly try username and password combinations from breaches on other web services in hopes people use the same combination, a common security problem.

The spam, written in German, English and Dutch, advertised gambling websites and seemed to affect only European users. Many of those users wrote on the company's forum they had used a unique email address solely for Dropbox, leading to suspicions the company had been hacked.

Dropbox brought in an outside security team to investigate, but maintained on July 21 that it had found no intrusion of its internal systems or other compromised accounts.

In light of the breach, Dropbox said it plans in a few weeks to introduce two-factor authentication, such as a system that would send a temporary code to a person's phone.

Other planned upgrades include a new page that will show logs of user account activity and other "automated mechanisms to help identify suspicious activity," Agarwal wrote. Users may also be prompted to change their password if it has not been changed in a long time.

Send news tips and comments to jeremy_kirk@idg.com

Reprinted with permission from IDG.net. Story copyright 2014 International Data Group. All rights reserved.
Our Commenting Policies
2015 Premier 100 nominations open
Premier 100

Computerworld has launched its annual search for outstanding IT leaders who align technology with business goals. Nominate a top IT executive for the 2015 Premier 100 IT Leaders awards now through July 18.