Not all of the tested products claim to protect against malicious extensions, but Balazs said he tested them because some users might believe they do.įor example, the NoScript security extension for Mozilla Firefox is designed to block plug-in content from executing without user authorization, and also blocks some Web-based attacks such as cross-site scripting or clickjacking. Many of these products either don’t detect and block malicious extensions at all, or their protection can be bypassed, sometimes very easily, he found. He performed tests against browser security extensions, sandboxing software, Internet security suites, anti-keylogging applications and financial fraud prevention programs recommended by some banks. Earlier this year Balazs investigated how various security products protect users against malicious browser extensions and presented his findings at the OHM2013 security conference near Amsterdam in August.
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