HackingFinancial ServicesFinanceStolen CredentialsData ExfiltratedCustomer Data InvolvedTargetedGovernment IDIdentity (basic)MediumContained

LIBERTY MUTUAL GROUP INC.

bd_3d631ac75c1ebbe2 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 21, 2021

Filed

Apr 28, 2021

To disclose

14 weeks

Affected

78state residents only

Linked

6 filings

Confidence

66%

Full breach record for LIBERTY MUTUAL GROUP INC. →2 incidents on file

Liberty Mutual Group, Inc. filed an amended data breach notice with the New Hampshire Attorney General regarding unauthorized access to its auto insurance quoting websites (LibertyMutual.com and GetCertainly.com). The incident involved external actors exploiting the public-facing application to create fraudulent insurance policies using stolen personal information (names, DOB, driver's license numbers). The breach affected 78 New Hampshire residents, with activity occurring between November 2020 and March 2021. Liberty Mutual responded by masking sensitive data, canceling fraudulent policies, and offering credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 61 days

discovery → filing · 14 weeks / 97 days

Nov 21, 2020

Begins

Jan 21, 2021

Discovered

Apr 28, 2021

Filed

vs. sector median

+5 wks slower

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Indiana State AGbd_00c3f4f76df91dd82021-04-06 · +22dVerified
New Hampshire State AGbd_3ed53edc0121d24e2021-04-01 · +27dCandidate
Oregon State AGbd_d1628612bddc4dbf2021-03-31 · +28dCandidate
California State AGbd_2d94f08bebeefcf72021-03-30 · +29dVerified

Show 1 more filing ↓up to 30d gap

Massachusetts State AGbd_6d61d1598b68ccf82021-03-29 · +30dVerified

Name: Alston & Bird LLP
norm: alston bird

Name: LIBERTY MUTUAL GROUP INC.
norm: liberty mutual
Industry: Financial Servicesllm

Discovered: Jan 21, 2021
Breach occurred: Nov 21, 2020 – Mar 12, 2021
Undetected for: 61 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 12, 2021
Affected individuals: 78state-resident count only
Data types: Government IDIdentity (basic)
Data elements: Date of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified the Office of the New Hampshire Attorney General
Initial access: exploit_public_facing

During the incident: Masked driver's license numbers in online accounts
Disabled access to the online customer account for the unauthorized policies
Canceled the unauthorized policies
Worked with authorities to prevent future unauthorized activity
Reported this incident to the authorities
Offered 12 months of complimentary credit monitoring and identity theft protection services through Cyberscout
Changes made: Removed the ability to view driver's license numbers during an online quote
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 14 weeks(97 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 5 states

View merged incident ↗

Massachusetts State AGMar 29 · first

California State AG+1d

Oregon State AG+2d

New Hampshire State AG+3d

Indiana State AG+8d

New Hampshire State AG+30d · this page

Pattern: first filing Mar 29 (MA), last Apr 28 (NH) — a 30-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://mm.nh.gov/files/uploads/doj/remote-docs/liberty-mutual-group-20210428.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 28, 2021
Raw hash: 5b29d4a1893f02ea557d3f1ddacac95c7d44b17a972a8548e2c6030f840f65de

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityAlston & Bird LLP

Victim entityLIBERTY MUTUAL GROUP INC.

Incidentdiscovered Jan 21, 2021

Stated responseMasked driver's license numbers in online accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov