HackingTelecom & MediaInformationEmployee Data InvolvedIdentity (basic)Government IDEmploymentMediumContained

Atlantic Media

bd_ad2a735627a5e1a1 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Apr 7, 2021

To disclose

—

Affected

Not disclosed

Linked

6 filings

Confidence

66%

Full breach record for Atlantic Media →

Atlantic Media, Inc. disclosed that unauthorized actors gained access to its network file share server from February 25, 2021, to March 1, 2021. The incident impacted W-2 and W-9 forms containing names and Social Security numbers of current and former U.S. employees and independent contractors. The company engaged cybersecurity firms, contained the access, and offered credit monitoring.

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Incident timeline

Feb 25, 2021

Begins

Apr 7, 2021

Filed

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_d0ac220cea1c06242021-04-07Verified
New Hampshire State AGbd_d0ef5ea5aa7a1a632021-04-07Verified
Montana State AGbd_dc21bf2b37095bc82021-04-07Candidate
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: Telecom & Mediallm

Discovered: —
Breach occurred: Feb 25, 2021 – Mar 1, 2021
Materiality determined: —
Notification sent: Apr 7, 2021
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDEmployment
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Informed law enforcement

During the incident: Launched an in-depth investigation into this activity
Took measures to restrict any further unauthorized access
Restored 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
Offering complimentary two-year credit monitoring service provided by IDX
Changes made: Working with cyber security experts to identify any additional opportunities for enhancing our overall security
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 · 6 filings · 6 states

View merged incident ↗

Indiana State AGApr 7 · first

New Hampshire State AGApr 7 · first

Montana State AGApr 7 · first

California 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://oag.ca.gov/ecrime/databreach/reports/sb24-539793
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: 78c0cd2ef648c682cbd0fdaeb646f00c579943965b1d48af30696b9d2a7fd624

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityAtlantic Media

Victim entityAtlantic Media

IncidentUnauthorized Access

Stated responseLaunched an in-depth investigation into this activity

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov