Windows 7 windows defender & 7

Ive heard windows defender in vista & 7 is fairly spectacular, so i was wondering if it will protect ie9 against browser hijackers by itself?
Right now im running a 7 64 under SUA, UAC is on max, 7 firewall, DEP for all, and Defender is my only active protection......its allmost like streaking:angel_smile:

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