In the previous month the World Wide Web was subject to one of the heaviest attacks since it first came into existence. Thousands of legitimate websites were attacked by the Trojan horses JS:Redirector-H and JS:Redirector-J, the aim of which was to infect millions of unsuspecting users. avast! was the first antivirus program to detect the infection right at the start and all users of avast! were protected throughout the duration of the attack. Now, more than a month after the attack was first detected, it is possible to assess the attack.