New flaw in the Firefox and Opera browsers has been discovered and concern how browsers handle bitmap image files that can allow attackers to see what websites users have visited. This new flaw has been spotted by researcher Gynvael Coldwind of Vexillium who also posted a video that illustrates the problem. Hackers can get user data using the “canvas” HTML tag and then with JavaScript, the information can be sent to a remote server. This flaw also crashes Firefox. So far researchers report that this flaw affects Firefox 2.0.0.11 and previous as well as Opera 9.50 beta.