Once again, MS continues to prove they are taking security seriously and that Internet Explorer does not deserve being bashed or discarded due to security.
Note that NSSLabs is a highly respected, independent testing facility.
Is Your Browser Putting You At Risk? - General Browser Security
Is Your Browser Putting You At Risk? - Click Fraud
Note these finding do NOT suggest the alternatives are unsafe. In fact, you need to keep your systems updated and patched, use a decent anti-malware solution, and avoid risky behavior - the same precautions needed regardless the browser of choice.