HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedIdentity (basic)LowContained

South Bay Credit Union

bd_be8aa70e9935fd48 · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 18, 2024

Filed

May 13, 2025

To disclose

25 weeks

Affected

Not disclosed

Linked

7 filings

Confidence

65%

Full breach record for South Bay Credit Union →

South Bay Credit Union discovered unauthorized access to an employee's email account on November 18, 2024. The attacker accessed limited personal information, including names and other data elements. The credit union secured the account, engaged third-party investigators, and is offering credit monitoring to affected members.

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California clockDiscovered Nov 18, 2024 → Notified May 13, 2025176d ✗ CA 60-day late25 weeks discovery → filing

Incident timeline

discovery → filing · 25 weeks / 176 days

Nov 18, 2024

Begins

Nov 18, 2024

Discovered

May 13, 2025

Filed

vs. sector median

+17 wks slower

This filing is one of 7 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (6) · sorted by filing gap

Nebraska State AGbd_48a00e0afe054afa2025-05-13Verified
Indiana State AGbd_99daa838a9f34a3d2025-05-13Verified
Maine State AGbd_d3138b4a5b9dfc1e2025-05-13Verified
Vermont State AGbd_08a74b1806c29f8f2025-05-14 · +1dVerified

Show 2 more filings ↓up to 3d gap

Massachusetts State AGbd_28b9c45860b8a0462025-05-14 · +1dVerified
New Hampshire State AGbd_abc8380b4c4f53402025-05-16 · +3dVerified

Name: South Bay Credit Union
norm: south bay credit union
Domain: southbaycu.com

Name: South Bay Credit Union
norm: south bay credit union
Domain: southbaycu.com
Industry: Financial Servicesllm

Discovered: Nov 18, 2024
Breach occurred: Nov 18, 2024
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 13, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: valid_credentials

During the incident: Took immediate action to secure the account
Engaged a team of third-party specialists to investigate the incident
Reviewed the content of the email account to determine the types of information contained therein
Confirmed necessary technical safeguards are in place
Offering complimentary credit monitoring and identity protection services
Changes made: Continually evaluate and modify practices to enhance the security and privacy of personal information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 25 weeks(176 days from discovery to filing)
Compliance flags: CA 60-day late · 176d
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: Nov 18, 2024
→ Notified: May 13, 2025
176d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Nov 18, 2024 → Notified: May 13, 2025	176d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 7 states

View merged incident ↗

Nebraska State AGMay 13 · first

Indiana State AGMay 13 · first

Maine State AGMay 13 · first

California State AGMay 13 · first · this page

Vermont State AG+1d

Massachusetts State AG+1d

New Hampshire State AG+3d

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/sb24-602658
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 13, 2025
Raw hash: a7dfb0bab15ad52278149f7d6760f18478b10b78ed9b8b8fe8291f4e938477cb

Linked disclosures

Regulatory filings (6) · sorted by filing gap

Reporting entitySouth Bay Credit Union

Victim entitySouth Bay Credit Union

Incidentdiscovered Nov 18, 2024

Stated responseTook immediate action to secure the account

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov