According to Verisign iDefense, the targeted attacks reported against Google were made possible due to zero day vulnerabilities in Adobe Reader and Acrobat. Yesterday, Adobe released its own announcement acknowledging that Adobe has also been victim of the targeted attack. Also yesterday, Adobe released a critical security patch to address vulnerabilities in Adobe Reader and Acrobat that could lead to malicious code execution. Adobe has not confirmed whether the patch was related to the same flaws exploited in the recent Google / Adobe targeted attacks. An anonymous source has told IDG News that the Google attacks breached "internal interept systems" which IDG explains are "used to help Google comply with search warrants by providing data on Google users." It is not yet known what systems at Adobe were breached.