Scammer-Heavy U.S. ISP Grows More Isolated

Last week, Security Fix published an analysis of Atrivo, a California based Internet service provider, also known as Intercage, that has proven to be a virtual magnet for cyber-criminal operations. Since that time, Atrivo's biggest network backbone provider decided it could no longer support the company, and stopped offering it direct connectivity.

I first got wind of this change while reading a post on the NANOG mailing list, which caters to professionals employed by ISPs and various network providers. Marcus Sachs, director of the SANS Internet Storm Center, had said it looked like Global Crossing had stopped handling long-haul Internet traffic for Atrivo/Intercage within hours after our story was published. I followed up with Marc, but he was unable to produce any conclusive data showing the change.

Fast forward to today, and with the help of Jose Nazario at Arbor Networks, I was able to pull together a view of what happened. Global Crossing has in fact "de-peered" from Atrivo/Intercage, so it is no longer providing direct Internet connectivity.

Read more ...
Brian Krebs on Computer Security. The Washington Post Company.