World's Biggest Data Breaches

Selected losses greater than 30,000 records

US extra-marital affairs site

Records Stolen:
37,000,000
Method:
Hacked
Breach Impact:
Loss of intellectual property, brand reputation; bankruptcy; loss of clients; audits, fines, lawsuits
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Movie Studio

Records Stolen:
10,000,000
Method:
Hacked
Breach Impact:
$15 million
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American Bank

Records Stolen:
76,000,000
Method:
Hacked
Breach Impact:
Up to $1 billion (including lawsuits and remediation)
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Home Improvement Retailer

Records Stolen:
56,000,000
Method:
Hacked
Breach Impact:
$28 million
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Web Based E-Mail Service

Records Stolen:
5,000,000
Method:
Hacked
Breach Impact:
Loss of intellectual property, brand reputation; fines, lawsuits
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Internet Services Company

Records Stolen:
145,000,000
Method:
Hacked
Breach Impact:
$18 million
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Computer Software Company

Records Stolen:
36,000,000
Method:
Hacked
Breach Impact:
Loss of intellectual property, brand reputation; fines, lawsuits
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Doctor's Office

Records Stolen:
4,000,000
Method:
Compromised due to a Lost or Stolen Computer
Breach Impact:
$906 million
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Social Media Website

Records Stolen:
6,000,000
Method:
Accidentally Published
Breach Impact:
Loss of intellectual property, brand reputation; audits, fines
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Resources