
Adobe Systems joined Microsoft on "Patch Tuesday" and delivered <A HREF="http://news.zdnet.com/2100-1009_22-6093373.html?tag=zdnn.alert">fixes for two security flaws</A> in the ubiquitous Adobe PDF reader software. The vulnerabilities affect Adobe's Acrobat and Reader software for both the Windows operating system and Apple Computer's Mac OS, Adobe said in two separate security advisories. If left unpatched, the flaws could put Windows and Mac users at risk of a cyberattack.