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SUMMARY

Mailing error exposes 600,000 customers Social Security numbers on outside of envelope
Records	600,000
Record Types	SSN NAA
Breach Type	Snail Mail
Data Family	Unknown
Source	Inside - Malicious
Organization	Citigroup
Other Affected/Involved Organizations	None
Lawsuit?	NO/UNKNOWN
Data Recovered?	NO/UNKNOWN
Arrest?	NO/UNKNOWN
Submitted By:	kirniki

Date	Event
2010-02-01	Incident Occurred
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None. Add Data	Incident Discovered By Organization
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2010-02-24	Organization Reports Incident
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2010-02-15	Organization Mails Notifications
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None. Add Data	Records Recovered
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None. Add Data	Lawsuit Filed
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None. Add Data	Arrest Made
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records	date	organizations

Address: 399 Park Ave, New York, NY 10022, USA
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No known costs for this incident.

Ponemon Institute Direct Costs Estimate ¹

$36,000,000.00

Note that these estimates are based on the Ponemon Institute's 2009 direct costs figures from their 2009 Annual Study: Cost of a Data Breach. We multiply $60.00 by the number of records to obtain this figure. Keep in mind that depending on the breach, the direct costs are not always suffered by the breached organizations. In the case of credit card number breaches, the direct costs can often be suffered by banks and card issuers. Also note that this is only an estimate.