[an error occurred while processing this directive]
BBC News
watch One-Minute World News
Last Updated: Saturday, 16 August, 2003, 11:41 GMT 12:41 UK
Internet worm threat 'thwarted'
Screengrab of Microsoft Windows Update site, Microsoft
The virus threatened to bombard a Microsoft website
Software giant Microsoft says it is confident it has thwarted threatened massive disruption to the internet from the MSBlast worm.

The computer virus was set to bombard one of Microsoft's websites from infected machines around the world on Saturday, raising fears it would paralyse the network.

Microsoft implemented a series of countermeasures and reported "no problems" hours after the attack was due to have begun.

However, variants of the worm have already appeared and more dangerous versions are expected in the coming weeks and months, says the BBC's Kevin Anderson in Washington.

In the first phase of its attack, the worm infected an estimated 300,000 computers worldwide, causing them to reboot frequently.

Worm flawed

In the second phase, the computers were expected to fling data at the Microsoft website that helps Windows users patch their machines against viruses and other bugs.

We have been through a number of time zones now with no problems
Microsoft spokesman
However, a flaw in the worm may have enabled Microsoft to fend off its worst effects.

The worm instructed computers to call up http://windowsupdate.com - which is an incorrect address for reaching the actual Microsoft website that houses the software patch that protects against the worm.

Although Microsoft has long redirected those who visited that incorrect address to the real site, the company disabled the automatic redirection Thursday in preparation for the onslaught of infected computers.

Microsoft said its countermeasures had proved effective.

"We have been through a number of time zones now with no problems and we do not expect any as the [midnight Friday] deadline passes in the UK or US", said a Microsoft spokesman.

Microsoft said customers who have not yet installed software to remove the worm were still being affected by phase one of the virus' attack.

The BBC's David Chazan
"Microsoft is claiming victory over the blaster worm"

Worm blasts across the web
12 Aug 03  |  Technology
Home users suffer web worm woe
13 Aug 03  |  Technology
Wiping out the web worm
14 Aug 03  |  Technology
White House dodges web virus
20 Jul 01  |  Science/Nature
FBI probes attack on net
23 Oct 02  |  Technology
Net security threats turn devious
08 Aug 02  |  Technology
Safer computing versus convenience
15 Aug 03  |  Technology

The BBC is not responsible for the content of external internet sites


News Front Page | Africa | Americas | Asia-Pacific | Europe | Middle East | South Asia
UK | Business | Entertainment | Science/Nature | Technology | Health
Have Your Say | In Pictures | Week at a Glance | Country Profiles | In Depth | Programmes
Americas Africa Europe Middle East South Asia Asia Pacific