Title:
Understanding the Network­-Level Behavior of Spammers

dc.contributor.author Ramachandran, Anirudh
dc.contributor.author Feamster, Nick
dc.contributor.corporatename Georgia Institute of Technology. College of Computing
dc.date.accessioned 2007-05-08T16:45:30Z
dc.date.available 2007-05-08T16:45:30Z
dc.date.issued 2006
dc.description.abstract This paper studies the network-level behavior of spammers, including: IP address ranges that send the most spam, common spamming modes (e.g., BGP route hijacking, bots), how persistent (in time) each spamming host is, botnet spamming characteristics, and techniques for harvesting email addresses. This paper studies these questions by analyzing an 18-month trace of over 10 million spam messages collected at one Internet "spam sinkhole", and by correlating these messages with the results of IP-based blacklist lookups, passive TCP fingerprinting information, routing information, and botnet "command and control" traces. We find that a small, yet non-negligible, amount of spam is received from IP addresses that correspond to short-lived BGP routes, typically for hijacked addresses. Most spam was received from a few regions of IP address space. Spammers appear to make use of transient "bots" that send only a few pieces of email over the course of a few minutes at most. These patterns suggest that developing algorithms to identify botnet membership, filtering email messages based on network-level properties (which are less variable than an email's contents), and improving the security of the Internet routing infrastructure, may be prove extremely effective for combating spam.
dc.identifier.uri http://hdl.handle.net/1853/14332
dc.language.iso en_US en
dc.publisher Georgia Institute of Technology en
dc.relation.ispartofseries SCS Technical Report ; GIT-CSS-06-01 en
dc.subject BGP routing
dc.subject Blacklists
dc.subject Botnet
dc.subject Datasets
dc.subject Spammers
dc.subject TCP fingerprinting
dc.subject Traceroutes
dc.title Understanding the Network­-Level Behavior of Spammers en
dc.type Text
dc.type.genre Technical Report
dspace.entity.type Publication
local.contributor.corporatename College of Computing
local.contributor.corporatename School of Computer Science
local.relation.ispartofseries College of Computing Technical Report Series
local.relation.ispartofseries School of Computer Science Technical Report Series
relation.isOrgUnitOfPublication c8892b3c-8db6-4b7b-a33a-1b67f7db2021
relation.isOrgUnitOfPublication 6b42174a-e0e1-40e3-a581-47bed0470a1e
relation.isSeriesOfPublication 35c9e8fc-dd67-4201-b1d5-016381ef65b8
relation.isSeriesOfPublication 26e8e5bc-dc81-469c-bd15-88e6f98f741d
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