A day after Adobe patched a serious security hole in its Reader and Acrobat programs, miscreants are flooding email inboxes with malware-tainted PDF files that try to remotely hijack vulnerable computers. The malware, identified by Symantec researchers as Trojan.Pidief.A, is included in PDF files attached to a "fair number of emails," according to this blog entry. The spam typically targets specific businesses or organizations. Adobe issued a patch for the vulnerability on Monday. The revelation of in-the-wild exploits underscores the importance of updating immediately. A patch for Reader is available here; an Acrobat update is available here. Emails typically arrive...