Jump to content

Microsoft has a change of heart on how to keep Internet safe

Recommended Posts


Should ISPs be the ones who keep hacked PCs off the Internet? Microsoft's chief security executive used to think so, but now he's had a change of heart.

Speaking at the RSA Conference Tuesday, Microsoft Corporate Vice President for Trustworthy Computing Scott Charney said that he no longer thought it was a good idea for service providers to be the ones on the hook for keeping infected PCs from the rest of the Internet.

"Last year at RSA I said, 'You know we need to think about ISPs being the CIO for the public sector, and we need to think about them scanning consumer machines and making sure they're clean and maybe quarantining them from the Internet,'" he said. "But in the course of the last year as I thought a lot more about this I realized that there are many flaws with that model."

Consumers may see security scans as invasive and a violation of privacy, and with more and more people using the Internet as their telephone, quarantining a PC could amount to cutting off someone's 911 service, he said. "You see the scenario, right: a heart attack, I run for my computer, it says you need to install four patches and reboot before you can access the Internet. That's not the experience we strive for."

RSA Security Conference

    * RSA: Act now on cyberwar, security experts caution

    * Bulk of browsers found to be at risk of attack

    * Attack mitigation tools fall short, security vendors say

    * Hacked and now vandalized, HBGary pulls out of RSA

    * Microsoft has a change of heart on how to keep Internet safe

    * Virtualization can be key to cloud security, RSA chief says

    * Tablets, smartphones force Cisco to rethink security

    * iPhone security, IP route hijack prevention on tap at RSA

    * RSA 2011: Cloud security challenges dominate

More in our Security Topic Center

Then there's the biggest problem of all. ISPs would have to bear the cost. "It puts a lot of burden on the ISPs, because they're the ones who are gating access to the Internet," Charney said.

ISPs have experimented with different ways to cut down on infected computers. Comcast, for example, has a service called Constant Guard that warns customers when they have a security problem.

But cutting off service to infected customers is an expensive proposition. "It just takes one phone call from a consumer for you to lose your profit margin for the year" on that user, said Craig Labovitz, chief scientist with network monitoring firm Arbor Networks, in a telephone interview.

Labovitz said that technology companies have been coming up with new ways to rid the world of infected machines for about two decades now, without success. "Even if we do force end users to keep their patches updated there are still a huge number of zero days," he said, referring to unpatched software flaws that can be used to take over a fully patched PC. "It's an arms race that keeps going. There certainly isn't any single bullet."

Still, Charney thinks that there are ways to improve things.

He thinks that Internet companies could take a page from organizations such as the World Health Organization and find new ways to keep infected PCs away from the rest of the network -- to "enforce goodness," he said.

Maybe the solution is for consumers to share trusted certificates about the health of their personal computer -- including data on whether it's running antivirus or is completely patched -- Charney suggested. He called this "collective defense." An example? A bank could ask customers to sign up for a program that would scan their PC for signs of infection during online sessions. If there was a problem, the bank could then limit what the customer could do -- topping transactions off at $2,000, for example.

That might end up to be a more workable model for the Internet, Charney said. "The user remains in control. The user can say I don't want to pass a health certificate," he said "There may be consequences for that decision, but you can do it."


Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Create New...

Important Information

By using this site you accept our Terms of Use and Privacy Policy. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.