America Online on Monday said it is blocking malicious links tied to a recently discovered bot that uses encryption to increase the range of its targets and make eradication more difficult. The bot software, which can only infect those who click on a malicious link sent via AIM, may infect upwards of a few tens of thousands of users, said Johannes Ullrich, chief research officer at the Sans Institute. San’s Internet Storm Center released a report on the issue Sunday night. Full Story