Surveillance Self-Defense International
Bless the Electronic Frontier Foundation. Always doing some awesome work, they've put out a great piece on digital self defence.
6 Ideas For Those Needing Defensive Technology to Protect Free Speech from Authoritarian Regimes and 4 Ways the Rest of Us Can Help
Of course, authoritarian regimes can be widely interpreted here. Personally, I think the UK has gone off the deep end with both the way its using laws and its over-zealous database creation. And let's face it, any country thinking of putting internet filters on your information is not that much further away (yes, I'm looking at you Australia and NZ) to say nothing of unapologetic offenders like China, Iran and Saudi Arabia.