Last week, Adobe was hit by a hack attack that exposed the bank details of customers using its popular software such as Photoshop and Acrobat Reader.
Revealing the breach in an official blog post, chief security officer Brad Arkin also said that the perpetrators had accessed the source code for a large number of Adobe products.
Arkin said that the company had notified the relevant federal authorities and was helping them in their investigation.
An internal inquiry has led to the conclusion that the attackers obtained certain details from 2.9 million customer accounts.
Among the data stolen are names and encrypted credit or debit card numbers. As of last Thursday, Adobe had no reason to believe that any decrypted card details had fallen into the criminals’ hands.
Apologising on behalf of the company, Arkin said that Adobe was doing its best to resolve the issue.
He outlined the steps taken by the company in response to the incident, starting with the reset of passwords for Adobe accounts.
People whose accounts were affected will receive e-mails with instructions for changing their passwords.
Adobe is also getting in touch with customers whose card information is believed to have been compromised. In addition, Adobe has sent notifications to banks handling customer payments for Adobe.
This will allow them to cooperate with card issuers and payment card firms to ensure that customer bank accounts are protected, Arkin added.