Adobe shut down Connectusers.com, a website where customers share information about using its Connect online conferencing service after the software maker discovered it had been compromised in a data breach. The company said on Wednesday that it would reset passwords of the approximately 150,000 members of the site. Adobe said its Connect web conferencing service and other company sites were not breached.

News of the breach surfaced on Tuesday when a hacker claimed in a posting on the Internet to have stolen log-in credentials of 150,000 Adobe customers and partners.

Last week, Russian security firm Group-IB had uncovered a flaw in Adobe's Reader software that criminals are currently exploiting to attack PCs by infecting them with malicious PDF documents.