Adrian Perrig Leads Research Team Dedicated To Analyzing and Disrupting Internet Attackers' Black Markets

Trust researcher Adrian Perrig's work is highlighted in a CMU press release: "Carnegie Mellon's Adrian Perrig Leads Research Team Dedicated To Analyzing and Disrupting Internet Attackers' Black Markets." The work, done in conjuction with Vern Paxson and others is described as:

To stem the flow of stolen credit cards and identity data, Carnegie Mellon researchers proposed two technical approaches to reduce the number of successful market transactions, including a slander attack and another technique, which were aimed at undercutting the cyber-crooks verification or reputation system.

"Just like you need to verify that individuals are honest on E-bay, online criminals need to verify that they are dealing with 'honest' criminals," Franklin said.

In a slander attack, an attacker eliminates the verified status of a buyer or seller through false defamation. "By eliminating the verified status of the honest individuals, an attacker establishes a lemon market where buyers are unable to distinguish the quality of the goods or services," Franklin said.

The researchers also propose to undercut the burgeoning black market activity by creating a deceptive sales environment.

Perrig's team developed a technique to establish fake verified-status identities that are difficult to distinguish from other-verified status sellers making it hard for buyers to identify the honest verified-status sellers from dishonest verified-status sellers.

"So, when the unwary buyer tries to collect the goods and services promised, the seller fails to provide the goods and services. Such behavior is known as 'ripping.' And it is the goal of all black market site's verification systems to minimize such behavior," said Franklin.

The work has also been featured in a Slashdot.