Interesting article on TechNet:
If a bad guy can persuade you to run his program on your computer, it’s not solely your computer anymore.
If a bad guy can alter the operating system on your computer, it’s not your computer anymore.
If a bad guy has unrestricted physical access to your computer, it’s not your computer anymore.
If you allow a bad guy to run active content in your website, it’s not your website any more.
Weak passwords trump strong security.
A computer is only as secure as the administrator is trustworthy.
Encrypted data is only as secure as its decryption key.
An out-of-date antimalware scanner is only marginally better than no scanner at all.
Absolute anonymity isn’t practically achievable, online or offline.
Technology is not a panacea.