HackingTechnologyManufacturingInformationStolen CredentialsData ExfiltratedEmployee Data InvolvedMulti-Stage ChainIdentity (basic)Government IDFinancial accountHealth (basic)EmploymentMediumContained

ACUITY BRANDS LIGHTING, INC.

bd_9f481a0a57a510be · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 7, 2021

Filed

Dec 6, 2022

To disclose

52 weeks

Affected

Not disclosed

Linked

6 records

Confidence

64%

Full breach record for ACUITY BRANDS LIGHTING, INC. →

Acuity Brands, Inc. disclosed two unrelated incidents of unauthorized access where an external actor copied files containing personal information. The first incident occurred Oct 6-7, 2020; the second Dec 7-8, 2021, when the company identified the breach. Affected data included names, SSNs, driver's license numbers, financial account info, and limited health/employment records. The company engaged third-party cybersecurity firms, secured systems, and offered one year of identity protection services.

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Leak gap clock✗ Leak >180d52 weeks discovery → filing

Incident timeline

undetected · 427 days

discovery → filing · 52 weeks / 364 days

Oct 6, 2020

Begins

Dec 7, 2021

Discovered

Dec 6, 2022

Filed

vs. sector median

+41 wks slower

This filing is one of 6 records about the same incident.View merged incident

A leak claim by conti about this victim was first seen 325 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitecontibd_0808452fec3877d52022-01-15 · +325dVerified by operator

Regulatory filings (4) · sorted by filing gap

Indiana State AGbd_13f8e899096057462022-12-06Verified by operator
Massachusetts State AGbd_7aa653c6745570012022-12-06Verified by operator
Maine State AGbd_8343b9543b9f07982022-12-06Verified
Montana State AGbd_e48270b605e5e4d52022-12-06Verified

Name: ACUITY BRANDS LIGHTING, INC.
norm: acuity brands lighting

Name: ACUITY BRANDS LIGHTING, INC.
norm: acuity brands lighting
Industry: TechnologyllmManufacturingllm

Discovered: Dec 7, 2021
Breach occurred: Oct 6, 2020 – Dec 8, 2021
Undetected for: 427 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial accountHealth (basic)Employment
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External

During the incident: Immediately took steps to secure our systems
Worked with a third-party cybersecurity firm to conduct a thorough investigation
Offering a complimentary one-year membership in Experian’s IdentityWorksSM
Changes made: Enhancing our existing security protocols and technical safeguards to further secure our environment and to help prevent a similar incident in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 52 weeks(364 days from discovery to filing)
Compliance flags: Leak >180d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGDec 6 · first

Massachusetts State AGDec 6 · first

Maine State AGDec 6 · first

Montana State AGDec 6 · first

California State AGDec 6 · 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/sb24-559772
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 6, 2022
Raw hash: eda35bf80c9c6d4798e4dc68a7cc31a941abb8be9f38fb26e077e4395bb429e1

Linked disclosures

Ransomware claims (1)

Regulatory filings (4) · sorted by filing gap

Reporting entityACUITY BRANDS LIGHTING, INC.

Victim entityACUITY BRANDS LIGHTING, INC.

Incidentdiscovered Dec 7, 2021

Stated responseImmediately took steps to secure our systems

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov