According to Trend Micro, variants of Zotob and Rbot worms are shutting down computers running Microsoft's Windows 2000.

The Zotob worm takes down Windows 2000

Zotob damage deep but not widespread
Fewer businesses fell victim to the Zotob worm that struck corporate networks than previous attacks, but those it hit paid dearly, according to a new survey.

Exploit out for Zotob-like Windows flaw
Computer code exploits a flaw in Windows similar to the hole that led to the Zotob worm.

Name that worm--plan looks to cut through chaos
Zotob.E, Tpbot-A, Rbot.CBQ and IRCbot.worm: all names given to a single worm that wreaked havoc in Windows 2000 systems last month. Among the plethora of identifiers, perhaps the most useful--CME-540--didn't make an impact.

Zotob worm linked to credit card fraud ring
Authorities have linked one of the suspects in the Zotob investigation to individuals thought to be part of a credit card fraud ring.

Arrests made in probe of worm that hit ABC, others
Law enforcement officials have arrested two men suspected of unleashing of a pair of computer worms, including last week's Zotob, which hit servers at American Express, The New York Times, and elsewhere.

Zotob worm hole also affects Windows XP
The vulnerability that downed Windows 2000 computers last week also holds a serious risk for some XP users.

Get up to speed on Microsoft's August security bulletins and latest security advisory
In this edition of the IT Locksmith, John McCormick brings you up to speed with Microsoft's remaining security bulletins for August.

Flawed code throttled spread of Zotob variants
Some versions contained coding errors that sent PCs into a reboot loop, instead of working to spread the infection, experts say.

Survey: Microsoft bears some blame for worms
Thirty-five percent of respondents to an informal Web survey of customers by security company Sophos said Microsoft was ultimately at fault for the recent rash of worms spawned by variants of Zotob.

Microsoft offers Zotob removal tool
Microsoft has made available a free software tool to help victims of the worms that hit Windows computers in the past days clean their systems.

Watch out for worm wars
The recent surge in worms could be part of an underground battle to hijack PCs for use in Net crimes, some security experts say--but others aren't convinced.

New worms prevention and cure
New worms picks up where Zotob left off. Check out this prevention and cure report.

Windows worms knocking out computers
Network worms that shut down computers running Microsoft's Windows 2000 operating system may be linked to competition between rival hackers.

Zotob worm finds its path limited
A new worm that was unleashed over the weekend affects only a limited group of Windows users and has not wreaked any widespread havoc.

Zotob worm hits Windows users
A new Internet worm has been detected that can infect Microsoft's Windows platforms faster than previous computer worms.

Worm hole found in Windows 2000
A serious flaw has been discovered in a core component of Windows 2000, with no possible work-around until it gets fixed.

IMlogic ups shields against IM threats
IMlogic is pooling its customers' systems to do real-time scanning of instant-messaging traffic in an effort to stop IM worms in their tracks.

IM worm speaks your language
New pest targeting users of MSN Messenger looks at a system's settings, then sends its message in one of 10 languages.

IM threats on the rise
TechRepublic's IT Locksmith, John McCormick, discusses the latest report on instant messaging threats, which shows a four-fold increase in IM and peer-to-peer threats for the second quarter of 2005.

Spying worm spreads via MSN Messenger, AIM
Attacks tailored to IM services contain links that could infect a PC with a Trojan horse or dangerous worm.

iTunes IM worm drops adware
Worm found on AOL's Instant Messenger network carries a file that masquerades as iTunes software and installs adware.

New worm hits AIM network
A new worm spread quickly on America Online's AIM instant messaging service but was contained within hours.

Worm, phishing scam hit IM services
A new worm and a phishing scam are targeting members of the America Online and Yahoo instant messaging networks.

Mytob worm picks up phishing trick
New variants of the Mytob worm are using a phishing-style e-mail to fool people into downloading malicious code.

Viruses, worms, and Trojans return with a vengeance
John McCormick brings you up to speed on the return of e-mail-borne threats.

Sober worm hits new heights
The variant now accounts for more than 5 percent of all e-mail, surprising experts with its continued growth.

Sober worm makes a comeback
Mass-mailing pest is spreading again, harvesting e-mail addresses for spammers, security companies have warned.

Sober worm spreads like wildfire
Latest variant of the long-lived pest is propagating so rapidly it now makes up two-thirds of all virus traffic, security experts say.

Sober worm variant makes the rounds
Sober.P harvests e-mail addresses from a victim and then sends a barrage of spam to those recipients.

Sober.P prevention and cure
Virus uses both English and German text to lure victims. Find out how Sober.P works and how to remove it from your system.

Download: Identify/React Chart: Sober.P
The Sober mass-mailing worm uses its own SMTP engine to spread as an e-mail attachment, usually with a .zip extension. TechRepublic's Identify/React chart for Sober.P puts critical information for identifying and removing the virus right at your fingertips.

MyDoom.s prevention and cure
This mass-mailing virus appears to contain photos but actually attempts to install a backdoor Trojan horse.

New MyDoom revives call to catch culprit
F-Secure has posted a "job advertisement" on its web log offering readers a chance to "make money fast" by finding the author of MyDoom and cashing in on the rewards.

MyDoom opens door for attack on Microsoft
New variant of the worm represents a troubling trend that results in PCs being "owned by the virus writers," one expert says.

Google, other engines hit by worm variant
Top search sites troubled by latest MyDoom release.

MyDoom.m prevention and cure
A spoofed warning from your e-mail provider may disguise this virus.

How did MyDoom become the worst virus outbreak ever?
Find out why the MyDoom worm tricked so many users and IT departments.

Mydoom worm is besieging systems across the Internet
The Mydoom and Mimail worms are spreading across the Internet attacking Windows systems and bogging down Internet connections and mail servers. Get the information you need to know about these two viruses.

Bagle.ag and Bagle.ai prevention and cure
Here's how to prevent a Bagle attack and how to repair your system if it has already hit.

Latest Bagle succeeds by sheer numbers
Online vandals aim to profit more from the mass-mailing computer virus by relaying information through a legion of German web sites.

Bagle keeps toasting PCs
Publicly available source code means the latest variant of the virus won't be the last.

TechProGuild FastAnswer: Sasser worm reboot problem can be delayed
The Sasser worm patch is easily applied to a system connected to the Internet. Unfortunately, that connection is not possible because of constant system reboots. This FastAnswer shows you how to delay the reboot so you can apply the patch.

Remove Sasser from your PC and prevent its return
Sasser is proving to be a real problem for many users and is now in its sixth or seventh generation. Fortunately, they all remove in the same way. Read on to learn about manual removal, removal tools, and how to prevent reinfection.

Bobax worm takes tip from Sasser
A new worm, tagged as low risk, is making the rounds inside some PCs infected by Sasser.

Worm feeds on Sasser-infected computers
Computers compromised by the Sasser worm may be vulnerable to a scavenging program that exploits a flaw in the software left behind by the worm.

New Sasser variant indicates copycat
The worm reappears as Sasser.F, even after the arrest of a teenager suspected of writing the original.

Microsoft: Separate trail led to second virus writer
Microsoft followed the lead of German informants to nab a second virus writer suspected of releasing the Agobot program.

Microsoft reward snags suspected Sasser author
Microsoft's $5 million fund for rewarding informants for leads on virus attacks played a key role in the arrest of the suspected author of the Sasser worm.

German police arrest Sasser worm suspect
An 18-year-old man suspected of creating the computer worm, believed to be one of the Internet's costliest outbreaks of sabotage, has been arrested in Germany.

Sasser keeps squirming into homes, businesses
The various Sasser worms continue to wriggle into computers, hitting home users hard while affecting companies to a lesser degree than previous worms, said security experts.

Sasser variants pose greater danger
Three new versions of the Sasser worm spread much more quickly than the original, infecting at least 500,000 computers.

Sasser.a and Sasser.b prevention and cure
ALERT: The Sasser.a and Sasser.b worms will crash vulnerable Windows 2000 and Windows XP machines.

Sasser's toll likely stands at 500,000 infections
Estimates based on Internet traffic analysis indicate that the worm and its variations have likely spread to 500,000 computers.

Netsky authors possibly penned Sasser
The programmers who created the latest variant of Netsky claim to be the authors of Sasser--and evidence from the code supports their assertion.

Sasser worm

What is your response to Sasser variants?

Have you been affected by Sasser?

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Download: A firewall checklist
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IT Security Survival Guide, Second Edition
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