HackingProfessional ServicesProfessional ServicesData ExfiltratedCustomer Data InvolvedIdentity (basic)LowContained

Rex Signature Services, LLC

bd_83f7e8638426c0af · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 18, 2024

Filed

May 24, 2024

To disclose

5 weeks

Affected

Not disclosed

Linked

3 filings

Confidence

64%

Full breach record for Rex Signature Services, LLC →

Rex Signature Services, LLC notified the California Attorney General of an incident where an unknown actor gained access to certain systems between April 9 and April 18, 2024. The company became aware of the inaccessibility on April 18, 2024. The investigation determined that names were likely accessed or acquired. The company secured systems, reported to law enforcement, and offered 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

California clockDiscovered Apr 18, 2024 → Notified May 24, 202436d ✓ CA 60-day OK5 weeks discovery → filing

Incident timeline

undetected · 9 days

discovery → filing · 5 weeks / 36 days

Apr 9, 2024

Begins

Apr 18, 2024

Discovered

May 24, 2024

Filed

vs. sector median

13 wks faster

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Montana State AGbd_c5f3a90f3d67dd752024-05-24Candidate
California State AGbd_c7d9c7bf466cb1132024-11-12 · +172dVerified

Name: Rex Signature Services, LLC
norm: rex signature

Name: Rex Signature Services, LLC
norm: rex signature
Industry: Professional Servicesllm

Discovered: Apr 18, 2024
Breach occurred: Apr 9, 2024 – Apr 18, 2024
Undetected for: 9 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 24, 2024
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Unknown
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Reported the event to federal law enforcementNotifying state regulators as required

During the incident: Took steps to secure our systems
Launched an investigation to determine the full nature and scope of the event
Reported the event to federal law enforcement
Notifying state regulators as required
Offering access to twenty-four (24) months of complimentary credit monitoring and identity restoration services through Experian
Changes made: Implemented and continue to implement technical security measures to strengthen the security of our systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(36 days from discovery to filing)
Compliance flags: CA 60-day OK · 36d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Apr 18, 2024
→ Notified: May 24, 2024
36d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Apr 18, 2024 → Notified: May 24, 2024	36d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 2 states

View merged incident ↗

Montana State AGMay 24 · first

California State AGMay 24 · first · this page

California State AG+172d

Pattern: first filing May 24 (MT), last Nov 12 (CA) — a 172-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://oag.ca.gov/ecrime/databreach/reports/sb24-585925
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 24, 2024
Raw hash: 2aba00f63f9b68f6adeb40816fe0187185536f49416c6c22298ff3671aff2ada

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityRex Signature Services, LLC

Victim entityRex Signature Services, LLC

Incidentdiscovered Apr 18, 2024

Stated responseTook steps to secure our systems

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov