Natisha Nodder, 37, and Stephen Ebbutt, 44, from Boston, Lincolnshire, helped Stephen Sleaford go into hiding after he stabbed Janusz Smoderek in 2011.

BBC: Janusz Smoderek

The privacy vulnerabilities that Vet and Jackson are aiming to highlight may go well beyond a few ex-boyfriends hiding in bushes.

FORBES: Researchers Show How Twitter, Twitpic Make Stalking Simple

We have to go after them, in their training camps, in their hiding places, in their spider holes, before they have the chance to attack us again.

CNN: Pataki: 'Bush says what he means, he means what he says'