HackingManufacturingManufacturingCustomer Data InvolvedIdentity (basic)LowContained

Reliance Steel & Aluminum Co

bd_caa1883ff4383211 · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 4, 2022

Filed

Aug 3, 2023

To disclose

16 months

Affected

Not disclosed

Linked

4 filings

Confidence

64%

Full breach record for Reliance Steel & Aluminum Co →

Reliance Steel & Aluminum Co. notified the California AG of an incident where an unknown actor gained unauthorized access to certain systems between April 3 and April 4, 2022. The company became aware of suspicious activity on April 4, 2022. The investigation determined that names and other data elements were compromised. The company engaged third-party forensic specialists, secured systems, and offered 12 months of credit monitoring.

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California clockDiscovered Apr 4, 2022 → Notified Aug 3, 2023486d ✗ CA 60-day late16 months discovery → filing

Incident timeline

undetected · 1 days

discovery → filing · 16 months / 486 days

Apr 3, 2022

Begins

Apr 4, 2022

Discovered

Aug 3, 2023

Filed

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Massachusetts State AGbd_26a9e2aab343c2122023-08-03Verified
Indiana State AGbd_a84b58bf570949e52023-08-03Verified
Montana State AGbd_ca42a22aef4e13912023-08-03Candidate

Name: Reliance Steel & Aluminum Co
norm: reliance steel aluminum

Name: Reliance Steel & Aluminum Co
norm: reliance steel aluminum
Industry: Manufacturingllm

Discovered: Apr 4, 2022
Breach occurred: Apr 3, 2022 – Apr 4, 2022
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Aug 3, 2023
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Unknown
Threat actor: External
Regulator citations: Reported this event to appropriate state regulators

During the incident: Took steps to secure our systems
Launched an investigation with the assistance of third-party computer forensic specialists
Reviewed our security policies and procedures to reduce the risk of similar future events
Offering complimentary credit monitoring and identity restoration services through IDX for twelve (12) months
Reported this event to appropriate state regulators
Changes made: Reviewed our security policies and procedures to reduce the risk of similar future events
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 months(486 days from discovery to filing)
Compliance flags: CA 60-day late · 486d
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 4, 2022
→ Notified: Aug 3, 2023
486d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Apr 4, 2022 → Notified: Aug 3, 2023	486d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Massachusetts State AGAug 3 · first

Indiana State AGAug 3 · first

Montana State AGAug 3 · first

California State AGAug 3 · 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/sb24-571262
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 3, 2023
Raw hash: 3041963cad596d5c9c4ddcaa573824e9bbc60913066d00df5d2f0b872669c4d2

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityReliance Steel & Aluminum Co

Victim entityReliance Steel & Aluminum Co

Incidentdiscovered Apr 4, 2022

Stated responseTook steps to secure our systems

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov