Experts at AlertSite, the Web site monitoring company, indicated this morning that home page load times for both SCO and Microsoft experienced problems over the weekend, the most serious of which was the crashing of the SCO Web site as of 1:00 AM on Sunday February 1.

Of this weekend, they say:

"www.sco.com was available most of the time until after 6:00 PM on Saturday, January 31. It was available very sporadically until about 1:00 AM on February 1 at which point it became completely unavailable. SCO's Web site continues to be unavailable this morning. SCO is now operating a new site.

www.microsoft.com experienced some fairly significant performance degradation. On Feb 1, Microsoft's home page was approximately 24% less responsive than either of the previous two Sundays. During the afternoon on Feb 1 average home page response time was up more than 70%. "

Meantime Central Command, a leading provider of PC anti-virus software and computer security services today released its monthly listing of the top twelve viruses reported for January, 2004. The report, coined the "Dirty Dozen", is based on the number of virus occurrences confirmed through Central Command's Emergency Virus Response Team.

The table below represents the most prevalent viruses for January 2004, number one being the most frequent.

Ranking Virus Name Percentage

1. Worm/MyDoom.A 77.4%
2. Worm/Sober.C 5.9%
3. Worm/Bagle.A 2.0%
4. Worm/ MiMail.I 1.7%
5. Worm/ Gibe.C 1.5%
6. Worm/Klez.E 1.3%
7. Worm/MiMail.J 1.0%
8. Worm/BugBear.B 0.7%
9. Worm/MiMail.A 0.5%
10. Worm/Dumaru.A 0.5%
11. Worm/Hawawi.G 0.4%
12. W32/Nimda 0.3% Others 6.8%

"In only a few days, the hefty volume of circulating MyDoom emails caused pandemonium for computer users worldwide," said Steven Sundermeier, Vice President of Products and Services at Central Command, Inc. Central Command's Emergency Virus Response Team confirmed that over 77% of all total infections received in January 2004 was MyDoom. "It didn't take MyDoom long to become a predominant member of the 'who's who' list of high impacting computer worms. It's safe to say that MyDoom bypassed the big leagues and took a straight path to the hall-of-fame."

• MyDoom Comes From Russia With Hate, Moscow Times Confirms
• SCO & Microsoft Post Bounties of $250,000 Each on the Head of MyDoom Author
• "MyDoom vs SCO" Begins...Or Does It?
• "If ISPs Are Blocking Sco.com Today, What Happened Jan 28/29?"
• Huge MyDoom Zombie Army Wipes Out SCO
• SCO Takes www.sco.com Out of the DNS
• Is Your TCP Port 3127 Open? Then Watch Out for "MyDoom.C"

• MyDoom Security Response (Symantec)
• Antivirus info re MyDoom (Microsoft)