Since California became the first state to enact a security breach notification law in 2001, 46 states and the District of Columbia have enacted similar disclosure laws. These laws follow similar basic tenets that “companies must immediately disclose a data breach,” a burden most stringent when the data compromised could be classified as personally identifiable information (PII), such as name, social security number, date of birth, mothers maiden name, etc.
When Spec’s liquor stores, a Houston-based retail chain, admitted that more than 500,000 customers had critical financial information stolen, they also revealed that the company had not disclosed knowledge of the data breach for over a year, at the request of investigators. This request makes it entirely unclear as to who data breach disclosures are intended to protect, and what the information contained within them reveals.
To better understand what information is contained within breach disclosures, we requested through the Freedom of Information Act (FOIA) records of disclosures made to the Commonwealth of Massachusetts within the healthcare industry for the period of 2007 - 2011. While the data showed that over 1 million Massachusetts residents had PII compromised as a result of a data breach, most shocking is:
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Greater than 40% of the reported breaches were from organizations who had reported a previous incident
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Greater than 60% of reported incidents were unable to identify when the breach started
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Less than 20% of the reports could identify if the reported breach had ended
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On average breaches were discovered 198 days after they began