If the crooks behind viruses, Trojan horses, and other malicious software were as stupid as they are scummy, we’d have a lot less to worry about.

Some of the tricks are pretty clever and interesting to read about. In the end, though, the defenses are the same as always: keep software up to date, use security software from a trusted source, and exercise caution when using your PC (or, even more so, others’ PCs).