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Bank transaction fraud results in over 13B annual losses for banks, merchants, and card holders worldwide. Much of this fraud starts with a Point-of-Compromise (a data breach or a skimming operation) where credit and debit card digital information is stolen, resold, and later used to perform fraud. We introduce this problem and present an automatic Points-of-Compromise (POC) detection procedure. BreachRadar is a distributed alternating algorithm that assigns a probability of being compromiseddoi:10.1137/1.9781611974973.63 dblp:conf/sdm/AraujoAFSB17 fatcat:ygq5scwkvbda3aqjntz6qrldq4