HackingTechnologyTelecom & MediaInformationStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDMediumContained

Atlantic Media

bd_dc21bf2b37095bc8 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 16, 2021

Filed

Apr 7, 2021

To disclose

22 days

Affected

6state residents only

Linked

6 filings

Confidence

64%

Full breach record for Atlantic Media →

Atlantic Media, Inc. notified affected individuals of a data breach where unauthorized actors accessed the network file share server from Feb 25 to Mar 1, 2021. The incident impacted W-2/W-9 forms containing names and SSNs of current and former employees and contractors. Atlantic Media engaged forensic investigators, notified law enforcement, and provided two years of credit monitoring.

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Incident timeline

undetected · 19 days

discovery → filing · 22 days

Feb 25, 2021

Begins

Mar 16, 2021

Discovered

Apr 7, 2021

Filed

vs. sector median

16 wks faster

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

California State AGbd_ad2a735627a5e1a12021-04-07Verified
Indiana State AGbd_d0ac220cea1c06242021-04-07Verified
New Hampshire State AGbd_d0ef5ea5aa7a1a632021-04-07Verified
Massachusetts State AGbd_a4c0b2321036f2e12021-04-08 · +1dVerified

Show 1 more filing ↓up to 4d gap

Maine State AGbd_2decbdc7019b2ebe2021-04-11 · +4dVerified

Name: Atlantic Media
norm: atlantic media
Domain: atlanticmedia.com

Name: Atlantic Media
norm: atlantic media
Domain: atlanticmedia.com
Industry: TechnologyllmTelecom & Mediallm

Discovered: Mar 16, 2021
Breach occurred: Feb 25, 2021 – Mar 1, 2021
Undetected for: 19 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 7, 2021
Affected individuals: 6state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: informed law enforcement
Initial access: valid_credentials

During the incident: Launched an in-depth investigation
Took measures to restrict any further unauthorized access
Restore the security and functionality of affected systems
Working with leading cyber security firms to assist our internal team with its investigation
Temporarily disabling certain systems
Limiting system access
Deploying additional security software on our systems
Informed law enforcement
Changes made: Offering complimentary two-year credit monitoring service
Identity restoration services
Identity theft insurance
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 22 days(22 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 · 6 states

View merged incident ↗

California State AGApr 7 · first

Indiana State AGApr 7 · first

New Hampshire State AGApr 7 · first

Montana State AGApr 7 · first · this page

Massachusetts State AG+1d

Maine State AG+4d

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://dojmt.gov/wp-content/uploads/Atlantic-Notif.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 7, 2021
Raw hash: 2527bd151481746e59a2a00731af1105c0b2f8e7bc068fcc14fe659132a3267c

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityAtlantic Media

Victim entityAtlantic Media

Incidentdiscovered Mar 16, 2021

Stated responseLaunched an in-depth investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov