http://www.technologyreview.com/news/428477/the-iphone-has-passed-a-key-security-threshold/
Your telephone, like your computer, is a treasure trove of information about you for law enforcement. You should always have a PIN for your telephone.
As for your computer, download and use TrueCrypt or some similar software. Here at the office, all my files are encrypted so that if burglars made off with them my clients' information is protected.
- John
