Researchers aim for cheap peer-to-peer zero-day worm defense

Researchers claim peer-to-peer software that shares information about anomalous behaviour could be the key to shutting down computer attacks inexpensively

Shutting down zero-day computer attacks could be carried out inexpensively by peer-to-peer software that shares information about anomalous behaviour, say researchers at the University of California at Davis.

The software would interact with existing personal firewalls and intrusion detection systems to gather data about anomalous behaviour, says Senthil Cheetancheri, the lead researcher on the project he undertook as a grad student at UC Davis from 2004 to 2007. He now works for SonicWall.

The software would share this data with randomly selected peer machines to determine how prevalent the suspicious activity was, he says. If many machines experience the identical traffic, that increases the likelihood that it represents a new attack for which the machines have no signature.

The specific goal would be to detect self-propagating worms that conventional security products have not seen before.

"It depends on the number of events and the number of computers polled, but if there is a sufficient number of such samples, you can say with some degree of certainty that it is a worm," Cheetancheri says. For that decision, the software uses a well-established statistical technique called sequential hypothesis testing, he says

The detection system is decentralized to avoid a single point of failure that an attacker might target, he says.

The task then becomes what to do about it, he says. In some cases, the cost of a computer being infected with a worm might be lower than the cost of shutting it down, in which case it makes sense to leave it running until a convenient time to clean up the worm, he says.

In other cases, the cost to the business of the worm remaining active might exceed the cost of removing the infected machine from the network, he says.

That cost-benefit analysis would be simple to carry out, he says, but network executives would have to determine the monetary costs and enter them into the software configuration so it can do its calculations he says.

End users would not program or modify the core detection engine, he says. "We don't want to have humans in the loop," he says.

He says he and his fellow researchers have set up an experimental detection engine, but it would have to be modified to run on computers in a live network without interfering with other applications and without being intrusive to end users, Cheetancheri says.

So far no one he knows of is working on commercializing the idea.

The software would be inexpensive because it would require no maintenance other than to enter the cost of each computer being disconnected from the network.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Tags sonicwallwormzero day initiative

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Tim Greene

Computerworld
Show Comments

Cool Tech

Toys for Boys

Family Friendly

Stocking Stuffer

SmartLens - Clip on Phone Camera Lens Set of 3

Learn more >

Christmas Gift Guide

Click for more ›

Brand Post

Bitdefender 2019

Shop safely with our award-winning security solution. Protect yourself this Black Friday and get the exclusive Black Friday discount for Bitdefender 2019!

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Maryellen Rose George

Brother PT-P750W

It’s useful for office tasks as well as pragmatic labelling of equipment and storage – just don’t get too excited and label everything in sight!

Cathy Giles

Brother MFC-L8900CDW

The Brother MFC-L8900CDW is an absolute stand out. I struggle to fault it.

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Featured Content

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?