Adobe says at least 38 million users' accounts were compromised in a cyber security breach earlier this year. Earlier this month, the company said fewer than 3 million users had been affected. The software 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," said.

Adobe said it is still working on notifying those users about the breach.

A file including user names and passwords taken from Adobe was posted on a website for the Internet group known as Anonymous. However, Adobe said there have been no signs of unauthorized activity on any of the Adobe IDs affected by the breach.

Besides user accounts, Adobe confirmed that parts of the source code for Photoshop, was also obtained.