Should you keep your email stream in-house or farm it out? Ask the 92 million AOL members whose email addresses were sold to spammers by an insider. AOL promises to strengthen internal security… Don’t they all?

Luckily, thieves embedded in email providers are still dumb enough to grab the addresses and run. Wait till they find out the real gold’s just waiting to be mined… in all those private communiques.

When it comes to industrial espionage, tapping email beats dumpster diving every time.