Adobe has confirmed that 2.9 million customers have had private information stolen during a "sophisticated" cyber attack on its website.
The attackers accessed encrypted customer passwords and payment card numbers, the company said.
But it does not believe decrypted debit or credit card data was removed.
Adobe also revealed that it was investigating the "illegal access" of source code for numerous products, including Adobe Acrobat and ColdFusion.
"We deeply regret that this incident occurred," said Brad Arkin, Adobe's chief security officer.
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