Opera



In a test designed to analyze various Web browsers’ abilities to protect European users against socially engineered malware attacks, researchers at NSS Labs determined that Internet Explorer 8 and 9 were significantly more effective at curbing malicious downloads than were the other major browsers.

There is a critical vulnerability in the Opera browser that could be used by an attacker to execute arbitrary code on vulnerable machines. The bug affects the latest version of Opera running on Windows 7, as well as Windows XP SP3.

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