Anti-virus firm Sophos is despairing of users ever learning to regularly update their software, after its chart of the most-reported viruses was dominated for the third month running by the vicious Magistr.
Peter Cooper, UK support manager at Sophos, commented: "June's virus chart is topped by the highly destructive Magistr worm. This worm has been dominating the top ten for the last three months. It seems that the simple message - don't open unsolicited attachments - has not yet been hammered home."
"What's more, the highly publicised Homepage worm [third most reported in June] is also continuing to infect many people. It seems computer users are still ignoring warnings and have neglected to update their anti-virus protection", he added.
Magistr includes highly destructive code which, if triggered, can delete all files from local and network drives, wipe the CMOS settings, and flash the BIOS chip of the infected computer.
It searches the user's address book, mailboxes and other files for email addresses, specifically targeting addresses from Outlook Express, Netscape Navigator and Internet Mail and News.
It then sends itself to these email addresses using its own SMTP client.
Sophos said that June also saw the resurgence of the Apology-B virus which prevents infected users from reaching the websites of many anti-virus vendors, thus preventing them downloading protection.
Some 794 new viruses were discovered and protected against by Sophos Anti-Virus during June 2001, the firm said, bringing its total software screens to 64,894.
View the top ten here.
Equinox's Dave Millett explores how phone, mobile and broadband could be affected by a no-deal Brexit
Dust storm on Titan only the third Solar System body where such storms have been observed
New technique could enable quantum computers to scale-up to millions of qubits
Systrom and Krieger taking time off "to explore our curiosity and creativity"