Reuters reports: A previously unknown flaw in a recent version of Microsoft Corp’s Internet Explorer web browser is being used to attack Internet users, including some visitors to a major site for U.S. military veterans, researchers said Thursday.

Security firm FireEye Inc discovered the attacks against IE 10 this week, saying that hundreds or thousands of machines have been infected. It said the culprits broke into the website of U.S. Veterans of Foreign Wars and inserted a link that redirected visitors to a malicious web page that contained the infectious code in Adobe Systems Inc’s Flash software.

FireEye researcher Darien Kindlund said that the attackers were probably seeking information from the machines of former and current military personnel and that the campaign shared some infrastructure and techniques previously attributed to groups in mainland China. [Continue reading…]