HackingProfessional ServicesProfessional ServicesCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Dun & Bradstreet Holdings, Inc.

bd_3467e3167f025813 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Oct 28, 2013

To disclose

—

Affected

Not disclosed

Linked

2 filings

Confidence

65%

Full breach record for Dun & Bradstreet Holdings, Inc. →

Dun & Bradstreet disclosed a cyberattack occurring between March and April 2013 that resulted in unauthorized access to a commercial information database. The incident potentially exposed personal information including names and business identification numbers that may have been Social Security Numbers. The company stated the incident is contained and offered 12 months of identity protection services via AllClear ID.

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Incident timeline

Mar 1, 2013

Begins

Oct 28, 2013

Filed

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

New Hampshire State AGbd_7f463293b7ba17222013-10-25 · +3dCandidate

Name: Dun & Bradstreet Holdings, Inc.
norm: dun bradstreet

Name: Dun & Bradstreet Holdings, Inc.
norm: dun bradstreet
Industry: Professional Servicesllm

Discovered: —
Breach occurred: Mar 1, 2013 – Apr 15, 2013
Materiality determined: —
Notification sent: Oct 28, 2013
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External

During the incident: Actively investigating the matter
Working with law enforcement
Arranged to have AllClear ID protect your identity for 12 months at no cost
Advised the three major U.S. consumer credit reporting agencies, Equifax, Experian and TransUnion, about this incident
Changes made: Continually enhancing our security procedures and safeguards
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

New Hampshire State AGOct 25 · first

California State AG+3d · this page

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/sb24-43100
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 28, 2013
Raw hash: 8bd95c185cac5a5b606776ad7873a418f258b55518ff34c5ca4c8445f9303a1b

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityDun & Bradstreet Holdings, Inc.

Victim entityDun & Bradstreet Holdings, Inc.

IncidentUnauthorized Access

Stated responseActively investigating the matter

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov