Investigations into the Madrid and London bombings highlight two worrying trends for European security services — the emergence of autonomous, homegrown radical cells and their skilled exploitation of the Internet. A Spanish judge investigating the train bombs that killed 191 people in Madrid in March 2004 reported today that the attacks were carried out by a local group of Islamic militants who were inspired — but not directed — by al-Qaeda, taking their cue from an Islamist Web site. Full Story