Security blunder

So this morning headlines was filed with the story of how London Underground's maintenance contractor hired the son a convicted terrorist Abu Hamza. Mohammed Mostafa himself a convicted terrorist served time in Yemen over a plot to bomb British and American terrorists. He was sacked when his identity was found out however one has to wonder how he started working in the first place. See here for more on this story.

After 7/7 bombing security on the underground should have been stepped up and everyone working in the underground vetted but it seems one slipped the net. The crazy thing is that it only takes one to slip through the net and we can have a repeat of 7/7. One has to wonder what is our security services doing about this? How comes know criminals can come into the country and work? Yet innocent refugees get sent back to face presecution?