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Last Updated: Tuesday, 22 March, 2005, 09:00 GMT
Rise of zombie PCs 'threatens UK'
Computer hard drive
The UK leads when it comes to the number of home computers hijacked
The UK leads the world in home computers that have been hijacked by malicious hackers, warns a report.

Research by security firm Symantec shows that 25% of the world's remotely controlled PCs are found in Britain.

The compromised computers are being used to send spam, launch attacks on websites and steal identities.

Symantec said the rise of broadband in Britain and user ignorance about the dangers of the net contributed to the figure.

Growing pains

The statistics about the numbers of PCs that have been hijacked or turned into "zombies" to do a hacker's bidding were gathered by Symantec for its regularly released Internet Security Threat Report.

It found that 25.2% of all the zombie machines it found were in the UK compared to 24.6% in the US and 7.8% in China.

Despite this the US still leads the world in the number of attacks launched by machines on its soil.

The good news about the zombie networks is that fewer seem to be in use on a daily basis.

Install anti-virus software
Keep your anti-virus software up to date
Install a personal firewall
Use Windows updates to patch security holes
Do not open e-mail messages that look suspicious
Do not click on e-mail attachments you were not expecting
Symantec found that the average number in use declined from 30,000 per day in July 2004 to about 5,000 in December,

However, the compromised computers are being used for progressively criminal ends to mount attacks on websites for extortion or in an attempt to steal confidential information.

Nigel Beighton, director of enterprise strategy at Symantec Europe, said the rise of zombies in the UK was due to the 93% increase in broadband connections in the UK over the last year.

"Unfortunately, new broadband customers may not be fully aware of the additional safety precautions that need to be taken when using an always-on high-speed internet connection," he said.

"Education still remains the number one challenge," he added.

The threat report also found that two programs that create zombies computers were in the top 10 malicious programs for the last six months.

The numbers of variants of one zombie creator, called Spybot, has grown to 4,300 in the last six months.

Many people have been tricked into opening an e-mail attachment bearing a virus which has resulted in their PC being hijacked. Others have simply been found by worms that scour the web for machines suffering one of many widely known vulnerabilities in Windows software.

Also growing fast are threats from phishing, spam, spyware and adware.

More than 33 million phishing attempts a week have been stopped by anti-fraud filters created by Symantec subsidiary Brightmail.

Spam totals were up 77% on the last six months with Symantec/Brightmail now stopping more than 1.2 billion junk mail messages a week.

Many PCs were contracting spyware and adware programs from websites set up to snare victims. But, Symantec noted, much spyware was bundled in with other programs.

Symantec predicted that future security threats will include more viruses for mobile devices and attempts to conceal malicious in media clips.



ABC Online Online identity theft soaring: survey - 20 hrs ago
Financial Review Hacker threats, spam 'still growing' - 25 hrs ago
Turkish Press Hacker threats, spam still growing: survey - 29 hrs ago
The Register Britain tops zombie PC charts - 32 hrs ago
ZDNet UK Broadband boom makes UK worst for hacked PCs - 35 hrs ago
The BBC is not responsible for the content of external internet sites

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


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