I was going to post something last week about the “fatal flaw” found in the speech recognition feature of Windows Vista, but I never got around to it. And now, thanks to Long Zheng’s brilliant post, there is simply no point. Here’s a snippet:
Last week, the media went schizophrenic over the Windows Vista speech recognition ‘loophole’ which allowed anyone with a microphone to have full access over your computer. Granted, you must also be partially-deaf, turned your speaker volume to full, carefully place your microphone next to the speakers, turn on speech recognition and train your speech profile as if you were someone else.
The rest of the post is quite funny, and discusses other possible exploits such as the mouse and keyboard, and Visual Studio. Definitely worth a read!
Read: Long Zheng
MasterMaq's Blog 
very intresting