HackingOtherTargetedIdentity (basic)Government IDMediumContained

Nederlander Theatrical Corp.

bd_36a23a043ce18590 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 21, 2021

Filed

May 27, 2022

To disclose

27 weeks

Affected

3state residents only

Linked

7 filings

Confidence

66%

Full breach record for Nederlander Theatrical Corp. →

Nederlander Theatrical Corp. notified the NH AG of a cyber-attack discovered on Nov 21, 2021, affecting 3 NH residents. Unauthorized access to files containing names and SSNs occurred. The company engaged third-party experts, secured its network, and provided 12 months of Experian credit monitoring to affected individuals.

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Incident timeline

discovery → filing · 27 weeks / 187 days

Nov 21, 2021

Discovered

May 27, 2022

Filed

vs. sector median

+19 wks slower

This filing is one of 7 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (6) · sorted by filing gap

Montana State AGbd_a2487b6f4fef34d22022-05-23 · +4dCandidate
Maine State AGbd_0ab3e8c73e1999712022-05-20 · +7dCandidate
Indiana State AGbd_206ccd4b6cbb994c2022-05-20 · +7dVerified
California State AGbd_9434c3a8580efc372022-05-20 · +7dVerified

Show 2 more filings ↓up to 210d gap

Massachusetts State AGbd_99e7cc502fb5fe1b2022-05-20 · +7dVerified
California State AGbd_4725e849817312312022-12-23 · +210dVerified

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: Nederlander Theatrical Corp.
norm: nederlander theatrical
Industry: Otherllm

Discovered: Nov 21, 2021
Materiality determined: —
Notification sent: May 20, 2022
Affected individuals: 3state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Regulator citations: Notified Office of the New Hampshire Attorney GeneralNotified other relevant state regulatorsNotified federal law enforcement
Initial access: valid_credentials

During the incident: Took steps to secure its network
Launched an investigation with the assistance of third-party experts
Reviewed the contents of those files
Reconciled this information with its internal records
Provided written notice of this incident to all affected individuals
Working to implement additional safeguards and training to its employees
Providing access to credit monitoring services for at least twelve (12) months, through Experian
Notified other relevant state regulators, as well as federal law enforcement
Changes made: Implementing additional safeguards and training to its employees
Reviewing its existing policies and procedures relating to data protection and security
Investigating additional security measures to mitigate any risk associated with this incident
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 27 weeks(187 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 6 states

View merged incident ↗

Maine State AGMay 20 · first

Indiana State AGMay 20 · first

California State AGMay 20 · first

Massachusetts State AGMay 20 · first

Montana State AG+3d

New Hampshire State AG+7d · this page

California State AG+217d

Pattern: first filing May 20 (ME), last Dec 23 (CA) — a 217-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/nederlander-theatrical-20220527.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 27, 2022
Raw hash: b046563a4e832136138b95eaca3ec5264c71993ba998d7c35cbb182a1c9583c1

Linked disclosures

Regulatory filings (6) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityNederlander Theatrical Corp.

Incidentdiscovered Nov 21, 2021

Stated responseTook steps to secure its network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov