Hackers are trying to infect innocent computer users with a malicious Trojan horse disguised as a Microsoft security update. The attack appears to have been timed to coincide with Microsofts genuine monthly patch cycle. On the second Tuesday of each month (known as Patch Tuesday), the firm issues security patches for its software and operating systems, and it has announced a series of updates which will be made available tomorrow. Computer users need to learn that Microsoft never sends out security updates as email attachments, and should always visit the genuine Microsoft website.”]