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Mytobs Continue to Plague Computer Users, Sophos Coments

  • 16 June, 2005 13:55

<p>Experts at SophosLabs, Sophos's global network of virus and spam analysis centers, report that the malicious family of Mytobs continues to grow. New variants are being pushed out by the virus writers using a variety of tactics to try and infect computers around the world.</p>
<p>In the past 24 hours, the Mytob family has accounted for 58 per cent of all reports to Sophos with 14 Mytob variants in the top 20 threats currently infecting computers.</p>
<p>The most widespread variant of the family, Mytob-AS, was first seen and protected against on Friday, 10 June and is responsible for 15 per cent of the reports. Mytob-AS is not only spread via email, it also scans the internet for computers which haven't been patched against a variety of Microsoft security loopholes, such as the LSASS (MS04-011) vulnerability.</p>
<p>"Patching against operating system vulnerabilities has never been more important," said Carole Theriault, security consultant at Sophos. "With a growing number of threats designed to steal sensitive and confidential information, computer users want to ensure that their barriers are up and ready to thwart these beasties."</p>
<p>The Mytob worms turn off security programs on infected Windows computers and deny access to many popular security websites. They also attempt to open a backdoor into the computer, allowing unauthorised remote hackers to gain access.</p>
<p>"There is nothing to suggest that the slew of Mytobs is tailing off just yet," continued Theriault</p>
<p>About Sophos.
Sophos is a world leading computer security specialist, developing anti-virus and anti-spam software. Headquartered in the UK, the company produces solutions tailored for businesses of all sizes – from small enterprises to global corporations. Sophos is acclaimed for delivering the highest level of customer satisfaction and protection in the industry. The company's products are sold and supported in more than 150 countries and protect more than 35 million users.</p>
<p>Sophos's regional head office for Australia and New Zealand is in Sydney and hosts one of the company's four High Security Research and Development Laboratories to provide global support services.</p>
Sean Richmond ( is available for comment:
+61 2 9409 9100 (tel)
+61 2 9409 9191 (fax)</p>
<p>Sophos's press contact at Gotley Nix Evans is:
Michael Henderson (
+61 2 9957 5555 (tel)
+61 413 054 738 (mob)
+61 2 9957 5575 (fax)</p>
<p>Given Australia's email-related legislation, please advise if you would prefer not to receive future emails of this type.</p>

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