HackingTechnologyInformationStolen CredentialsData ExfiltratedCustomer Data InvolvedGovernment IDIdentity (basic)CredentialsFinancial accountBehaviorMediumContained

TuneCore

bd_a955df555432345b · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 17, 2015

Filed

Dec 11, 2015

To disclose

24 days

Affected

Not disclosed

Linked

3 filings

Confidence

64%

Full breach record for TuneCore →

TuneCore disclosed unauthorized access to its servers in November 2015. An intruder illegally exported personal and account information, including SSNs, dates of birth, names, addresses, emails, account numbers, and passwords. Partial financial data (last 4 digits of cards/accounts) was also accessed. TuneCore engaged law enforcement and a cybersecurity firm, invalidated passwords, and implemented enhanced access controls and encryption.

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California clockDiscovered Nov 17, 2015 → Notified Dec 4, 201517d ✓ CA 60-day OK24 days discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 16 days

discovery → filing · 24 days

Nov 1, 2015

Begins

Nov 17, 2015

Discovered

Dec 11, 2015

Filed

vs. sector median

15 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_5ff2808e2b5653932015-12-11Candidate
Massachusetts State AGbd_598d56e95046e2d72015-12-15 · +4dVerified

Name: TuneCore
norm: tunecore
Domain: tunecore.com

Name: TuneCore
norm: tunecore
Domain: tunecore.com
Industry: Technologyllm

Discovered: Nov 17, 2015
Breach occurred: Nov 1, 2015 – Nov 17, 2015
Undetected for: 16 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 4, 2015
Affected individuals: Not disclosed
Data types: Government IDIdentity (basic)CredentialsFinancial accountBehavior
Data elements: Date of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1041 Exfiltration Over C2 ChannelT1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Working with law enforcement to investigate the unlawful access to our servers
Retained a leading cybersecurity firm to help review our security protocols
Invalidated your then-current TuneCore password
Requested that you log in to TuneCore as soon as possible to set a new password
Changes made: Secured all of our environments with updated access controls
Instituted more detailed network logging
Instituted a policy of access segregation among our environments so that the reuse of access keys is no longer allowed
Upgraded all encryption algorithms
All development and IT processes are under review for further security remediation and enhancement
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 days(24 days from discovery to filing)
Compliance flags: CA 60-day OK · 17d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Nov 17, 2015
→ Notified: Dec 4, 2015
17d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Nov 17, 2015 → Notified: Dec 4, 2015	17d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Montana State AGDec 11 · first

California State AGDec 11 · first · this page

Massachusetts State AG+4d

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/sb24-59260
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 11, 2015
Raw hash: d5aa1d5afaf0f33c246176fb4f483ee36d054a577fc571a5a4a1e5dbe8ff3b4b

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityTuneCore

Victim entityTuneCore

Incidentdiscovered Nov 17, 2015

Stated responseWorking with law enforcement to investigate the unlawful access to our servers

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov