HackingTelecom & MediaInformationVulnerability ExploitData ExfiltratedCustomer Data InvolvedSupply Chain (3P Vendor)CredentialsIdentity (basic)Government IDAuthenticationMediumContained

COMCAST CABLE COMMUNICATIONS, LLC

bd_9483a5f6ebb2a493 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 23, 2023

Filed

Dec 18, 2023

To disclose

8 weeks

Affected

Not disclosed

Linked

8 filings

Confidence

64%

Full breach record for COMCAST CABLE COMMUNICATIONS, LLC →5 incidents on file

Comcast Cable Communications LLC disclosed unauthorized access to internal systems between Oct 16-19, 2023, resulting from a vulnerability in Citrix software. The incident involved usernames, hashed passwords, and for some customers, names, contact info, last four digits of SSN, DOB, and secret questions. Systems were patched, law enforcement notified, and customers prompted to reset passwords and enable MFA.

J jump to incidentP pin to compareR raw source

California clockDiscovered Oct 23, 2023 → Notified Dec 6, 202344d ✓ CA 60-day OK8 weeks discovery → filing

Incident timeline

undetected · 7 days

discovery → filing · 8 weeks / 56 days

Oct 16, 2023

Begins

Oct 23, 2023

Discovered

Dec 18, 2023

Filed

This filing is one of 8 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

Vermont State AGbd_3823dc42ff458d5a2023-12-18Verified
Washington State AGbd_cf68c61c04a06b882023-12-18Candidate
Maine State AGbd_d0e6f01e879a45062023-12-18Verified
Oregon State AGbd_e1e3e7f42684ebc92023-12-18Verified

Show 3 more filings ↓up to 39d gap

Indiana State AGbd_62f3f759d84e3a662024-01-26 · +39dVerified
Massachusetts State AGbd_7804b41a61024f392024-01-26 · +39dVerified
Maine State AGbd_7ffaf039f7f863fd2024-01-26 · +39dVerified by operator

Name: COMCAST CABLE COMMUNICATIONS, LLC
norm: comcast cable communications

Name: COMCAST CABLE COMMUNICATIONS, LLC
norm: comcast cable communications
Industry: Telecom & Mediallm

Discovered: Oct 23, 2023
Breach occurred: Oct 16, 2023 – Oct 19, 2023
Undetected for: 7 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 6, 2023
Affected individuals: Not disclosed
Data types: CredentialsIdentity (basic)Government IDAuthentication
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Notified federal law enforcement
Third party: via Citrix
Initial access: exploit_public_facing

During the incident: Promptly patched and mitigated our systems
Notified federal law enforcement
Conducted an investigation into the nature and scope of the incident
Proactively asked you to reset your password
Changes made: Encourage you to enroll in two-factor or multi-factor authentication
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(56 days from discovery to filing)
Compliance flags: CA 60-day OK · 44d
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: Oct 23, 2023
→ Notified: Dec 6, 2023
44d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Oct 23, 2023 → Notified: Dec 6, 2023	44d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 7 states

View merged incident ↗

Vermont State AGDec 18 · first

Washington State AGDec 18 · first

Maine State AGDec 18 · first

Oregon State AGDec 18 · first

California State AGDec 18 · first · this page

Indiana State AG+39d

Massachusetts State AG+39d

Maine State AG+39d

Pattern: first filing Dec 18 (VT), last Jan 26 (ME) — a 39-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/sb24-578091
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 18, 2023
Raw hash: c6592922c1d6c2a7b4678e292fccec1754adc09d5bce8ab4719fe7af2e667dab

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityCOMCAST CABLE COMMUNICATIONS, LLC

Victim entityCOMCAST CABLE COMMUNICATIONS, LLC

Incidentdiscovered Oct 23, 2023

Stated responsePromptly patched and mitigated our systems

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov