Adobe on Tuesday issued a critical security update to patch a vulnerability that could help hackers “take control” of computers after users visit various sites, CNET reports. Security blogger Michele Spagnuolo, who detailed the security exploit, says the Flash issue can be used by hackers to steal cookies that authenticate users on “thousands of websites.” “Adobe has released security updates for Adobe Flash Player 14.0.0.125 and earlier versions for Windows and Macintosh and Adobe Flash Player 11.2.202.378 and earlier versions for Linux,” Adobe wrote. “These updates address vulnerabilities that could potentially allow an attacker to take control of the affected system. Adobe recommends users update their product installations to the latest versions.” Among the websites that may have been targeted