PhysicalTechnologyProfessional ServicesInformationLossEmployee Data InvolvedIdentity (basic)Government IDEmploymentMediumContained

COMPUTER SCIENCES CORPORATION

bd_adf4036a97161784 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 1, 2013

Filed

Apr 3, 2013

To disclose

5 weeks

Affected

Not disclosed

Linked

3 filings

Confidence

65%

Full breach record for COMPUTER SCIENCES CORPORATION →

Computer Sciences Corporation (CSC) reported the loss of a thumb drive containing personal information of providers, including names, Social Security Numbers, Employer Identification Numbers, and dates of birth. The drive, used in services for the State of North Carolina, was lost in CSC facilities in Raleigh, NC, in late February 2013 and discovered in early March 2013. CSC notified the State of North Carolina and offered affected individuals one year of free credit monitoring and identity protection services from Equifax. The incident involved physical loss of media containing sensitive identity and employment data.

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California clockDiscovered Mar 1, 2013 → Notified Apr 1, 201331d ✓ CA 60-day OK5 weeks discovery → filing

Incident timeline

undetected · 28 days

discovery → filing · 5 weeks / 33 days

Feb 1, 2013

Begins

Mar 1, 2013

Discovered

Apr 3, 2013

Filed

vs. sector median

14 wks faster

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

New Hampshire State AGbd_d45398684ad94cfa2013-04-03Verified
Massachusetts State AGbd_22f9fb7bf8baa8172013-04-08 · +5dVerified

Name: COMPUTER SCIENCES CORPORATION
norm: computer sciences

Name: COMPUTER SCIENCES CORPORATION
norm: computer sciences
Industry: TechnologyllmProfessional Servicesllm

Discovered: Mar 1, 2013
Breach occurred: Feb 1, 2013 – Feb 28, 2013
Undetected for: 28 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 1, 2013
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDEmployment
Data elements: Social Security numberDate of birth
Attack vector: Unknown
MITRE ATT&CK: T1052 Exfiltration Over Physical Medium
Regulator citations: Notified the State of North Carolina

During the incident: Notified the State of North Carolina of the loss
Initiated an ongoing search for the thumb drive
Arranged for free credit monitoring and identity protection services from Equifax Personal Solutions
Established a toll-free number to answer questions
Changes made: Reviewing data security practices
Implementing additional security procedures designed to prevent similar occurrences
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(33 days from discovery to filing)
Compliance flags: CA 60-day OK · 31d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Mar 1, 2013
→ Notified: Apr 1, 2013
31d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Mar 1, 2013 → Notified: Apr 1, 2013	31d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

New Hampshire State AGApr 3 · first

California State AGApr 3 · first · this page

Massachusetts State AG+5d

Pattern: first filing Apr 3 (NH), last Apr 8 (MA) — a 5-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://oag.ca.gov/ecrime/databreach/reports/sb24-40959
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 3, 2013
Raw hash: 3dc616bd279a174473da1540ed7aa9f0aaa6fb2aabc5c3424202076b4852c378

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityCOMPUTER SCIENCES CORPORATION

Victim entityCOMPUTER SCIENCES CORPORATION

Incidentdiscovered Mar 1, 2013

Stated responseNotified the State of North Carolina of the loss

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov