When Daniel Carter logged on to a shared computer at a hostel in Rome to check e-mail, he had no idea he was in a hacker’s sights. After his trip was over, he discovered someone had hijacked his e-mail account and sent a message to hundreds of his contacts asking for money. “Sorry i did not get you informed about my short trip to london … i was attacked on my way to the hotel by some hoodlums and they took away all my belongings,” the e-mail said, ending with a plea for money “so i can sort out my hotel bills and fly back home” and a promise of repayment.