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Cyber Risks · Krebs on Security

Naming & Shaming Sources of Spam

Summary: SpamRankings.net, a project launched by the Center for Research in Electronic Commerce at the University of Texas at Austin, publishes rankings of organizations whose networks have been infiltrated by spammers, starting with health care providers infected with spam bots. The data come from the Composite Block List, which tracks Internet addresses seen sending spam, and are translated into organization-level rankings with help from Team Cymru by correlating autonomous system numbers to network owners.

Key Takeaway: Cedar Sinai Health Systems held the number one spot in April, kept spam volumes low for a few weeks in May, and by the end of the month had surged back to number one - a reminder that a compromised network is not a spam nuisance but an environment, as director Andrew Whinston put it, in which user data can be stolen or compromised.

Read the original at Krebs on Security ↗

Topics
Data Breaches
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