Re: 150 years ago private citizens in the UK formed local rifle clubs
FYI - McKinnon didn't disclose any security weakness, he hacked and got caught. Because Blighty allows cyber crims to get away with their crimes with no real punishment, we will continue to have major cyber crime issues here.
As far as citizens joining the fight, that's all well and fine. Get a proper security job if you have the skills to help prevent hacking. Independent security players can create a world of problems and actually end up unknowingly aiding the enemy.