After originally saying that fewer than 3 million users had been affected by a cyber security breach earlier this month, Adobe is now saying that at least 38 million users' accounts were compromised.
The software company, known for Photoshop and other programs, said hackers were able to obtain the Adobe IDs and encrypted passwords for about 38 million users who are active with their accounts.
"We have completed email notification of these users. We also have reset the passwords for all Adobe IDs with valid, encrypted passwords that we believe were involved in the incident -- regardless of whether those users are active or not," the Silicon Valley company told KresbonSecurity, a cyber security website.
However, hackers were also able to access other types of accounts, including some by users who are no longer active. Adobe said it is still working on notifying those users about the breach.
Although a file including user names and passwords taken from Adobe was posted on a website for the Internet group known as Anonymous, the company said there have been no signs of unauthorized activity on any of the Adobe IDs affected by the breach.
Besides user accounts, Adobe also confirmed that at least a portion of the source code for Photoshop, its most popular program, was also obtained.
The company originally disclosed the breach in early October. At the time, Adobe believed the attack had been limited to about 2.9 million users, some of which also had their credit card information stolen.
Adobe said it planned to send those users information on how to protect themselves as well as give them a complimentary one-year membership to a credit monitoring service.