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Not-a-Bot (NAB): Improving Service Availability in the Face of Botnet Ramakrishna Gummadi Hari Balakrishnan Petros Maniatis Sylvia Ratnasamy
 

Summary: Not-a-Bot (NAB): Improving Service Availability in the Face of Botnet
Attacks
Ramakrishna Gummadi Hari Balakrishnan Petros Maniatis Sylvia Ratnasamy
MIT CSAIL Intel Research Berkeley
Abstract
A large fraction of email spam, distributed denial-of-
service (DDoS) attacks, and click-fraud on web adver-
tisements are caused by traffic sent from compromised
machines that form botnets. This paper posits that by
identifying human-generated traffic as such, one can mit-
igate botnet attacks, by servicing human-generated traffic
with improved reliability or higher priority.
The key challenge is to identify human-generated traf-
fic in the absence of strong unique identities. We develop
NAB ("Not-A-Bot"), a system to approximately identify
and certify human-generated activity. NAB uses a small
trusted software component called an attester, which runs
on the client machine with an untrusted OS and applica-
tions. The attester tags each request with an attestation
if the request is made within a small amount of time of

  

Source: Akella, Aditya - Department of Computer Sciences, University of Wisconsin at Madison

 

Collections: Computer Technologies and Information Sciences