Dref worm twists through emails
A worm hiding as a new year greeting card has made a big impact as users clear through a backlog of emails.
New figures from anti-virus firm Sophos found that the Dref-V worm accounted for 93.7 per cent of all infected emails on the last day of 2006. The worm was only discovered by anti-virus researchers the day before.
As a result of the worm’s emergence, the latest variant since it was first seen in July 2005, it has topped the malware charts for December with 35.2 per cent of all infections for that month. In the previous month, the Stratio worm held top spot, according to the company, but now it occupies fourth place.
‘Dref has been spammed out far and wide in the last few days, and there’s a danger that in the rush to get through the backlog of holiday emails, people might return to work and accidentally launch the malicious attachment,’ said Carole Theriault, senior security consultant at Sophos.
‘Its social engineering tactics are not new, so most businesses should have adequate defences in place to tackle the worm. Having spread for only two days during the entire month, it is astonishing that Dref has secured the top position for most widespread piece of malicious code,’ she added.