Adobe has acknowledged that its widely used programs for creating and reading PDF files currently are under attack by hackers, but it has offered little information about how it plans to thwart the assault. In an advisory posted on its website Wednesday, Adobe said essentially all versions of its Acrobat and Reader programs running on Windows, Macintosh and Unix-based machines have been exposed to a “critical vulnerability that could cause a crash and potentially allow an attacker to take control of the affected system.”
