HackingProfessional ServicesProfessional ServicesStolen CredentialsData ExfiltratedCustomer Data InvolvedPIIIdentity (basic)LowContained

Advantage Media Services LLC

bd_47a703b321cb14db · schema v1 · pii pii-v1

Severity

Low

Discovered

Sep 1, 2025

Filed

Mar 31, 2026

To disclose

30 weeks

Affected

Not disclosed

Linked

2 filings

Confidence

65%

Full breach record for Advantage Media Services LLC →

Advantage Media Services LLC experienced a data breach in September 2025 where an unauthorized actor gained access to its server environment and copied data containing personal information. The company detected suspicious activity in September 2025, isolated systems, changed passwords, and engaged security professionals. Data exfiltration occurred. Identity monitoring services were provided to affected individuals.

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Incident timeline

Sep 8, 2025

Begins

Mar 31, 2026

Filed

vs. sector median

+12 wks slower

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

Indiana State AGbd_88f98521482b4ed42026-03-31Verified

Name: Advantage Media Services LLC
norm: advantage media
Domain: amsfulfillment.com

Name: Advantage Media Services LLC
norm: advantage media
Domain: amsfulfillment.com
Industry: Professional Servicesllm

Discovered: Sep 1, 2025
Breach occurred: Sep 8, 2025 – Sep 9, 2025
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Reported the matter to federal law enforcement and relevant government agencies

During the incident: Isolated potentially impacted systems
Changed passwords
Increased monitoring and threat detection capabilities
Engaged data security and privacy professionals to assist with our response
Reported the matter to federal law enforcement and relevant government agencies
Changes made: Provided identity monitoring services for twelve (12) months through Kroll
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 30 weeks(211 days from discovery to filing)
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 ↗

Indiana State AGMar 31 · first

California State AGMar 31 · first · 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/sb24-621086
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 31, 2026
Raw hash: 58e8b0f16dc3a76d77db2ba265bfd4d781f2c1925139fc8acc9267aa9f13751f

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityAdvantage Media Services LLC

Victim entityAdvantage Media Services LLC

Incidentdiscovered Sep 1, 2025

Stated responseIsolated potentially impacted systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov