Viruses are getting faster, tougher
By David Legard
(IDG) -- One in every 300 e-mails circulating now contains a virus, up from one in every 700 in October last year, according to e-mail security company MessageLabs.
Viruses are growing in sophistication and are thus able to propagate themselves faster and more effectively, the company said in a statement regarding the Nimda virus.
Nimda is a hybrid virus that contains a mass-mailing component, enabling it to spread very quickly. As it spreads, it attempts to infect Web servers with a version of the Code Red program which caused serious disruption last month. Current outbreak tracking statistics show this to be one of the fastest-spreading viruses to date, MessageLabs said.
The virus tries to spread in several ways apart from mass mailing, according to MessageLabs. It attempts 16 different exploits against known Web server holes. Once compromised, the Web server appears to serve up pages that exploit browser bugs to execute immediately without asking for permission, and thus compromise the PC running the Web browser, according to MessageLabs.
The virus was first intercepted in a message sent from Korea, and has been detected in 15 countries, the most active being the U.K. and U.S., MessageLabs said. It has also infected a few systems in New Zealand, Australia and Japan, IT agencies and anti-virus companies have said.
The high scanning rate of the Nimda worm may also cause bandwidth denial-of-service conditions on networks with infected machines, the Singapore Computer Emergency Response Team said in an advisory.
This outbreak shows that existing anti-virus systems cannot respond quickly enough to new outbreaks and that the problem must be addressed at the Internet level, MessageLabs said.
MessageLabs said that if the growth in the number and power of viruses and worms continues, as many as one in 10 e-mails circulating the globe would be infected by a virus by 2007.
Aggressive new worm threatens Web users
September 18, 2001
Did the FBI ignore 'Code Red' warning?
September 4, 2001
Code Red not expected to cause major damage
August 19, 2001
'Code Red II' hits Hong Kong government
August 15, 2001
'Code Red' impact felt at major companies
August 9, 2001
Cost of 'Code Red' rising
August 8, 2001
New 'Code Red' worm entices Web hijackers
August 7, 2001
Daniel Sieberg: 'Code Red' II worm attack
August 7, 2001
'Code Red II' slows parts of the Net
August 8, 2001
Complacency threatens online security
April 20, 2001
RELATED IDG.net STORIES:
Multi-Fanged worm starts global attack
Nimda worm spreads three ways
(Network World Fusion)
The thorny topic of computer viruses
Code Blue a possible attempt to stop Code Red
Motives of Code Red bug hunters questioned
The age of security appliances
A solution to E-mail virus propagation
Symantec unites divisions into Security Response
Note: Pages will open in a new browser window
External sites are not endorsed by CNN Interactive.
TECHNOLOGY TOP STORIES:
Report: SUVs pose danger to cars
New telemarketer tool trumps TeleZapper
Terra Lycos logs $2.2B loss
AOL to offer song downloads
Microsoft seeks fiscal fountain of youth
|Back to the top|