HackingRetail & ConsumerRetailStolen CredentialsData ExfiltratedCustomer Data InvolvedAuthenticationCredentialsFinancial accountPIIMediumContained

Tennis Warehouse LLC

bd_09160cf230e387c1 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 15, 2021

Filed

Dec 17, 2021

To disclose

9 weeks

Affected

18,228state residents only

Linked

11 filings

Confidence

70%

Full breach record for Tennis Warehouse LLC →2 incidents on file

Tennis Warehouse, LLC, a sports equipment retailer, reported a supplemental data breach in Washington. Unauthorized access occurred on Oct 1, 2021, discovered Oct 15, 2021. Attackers obtained names, emails, and passwords for 3,969 additional WA residents (total 18,228). Initial notice sent Dec 16, 2021; supplemental notice April 8, 2022. Forensics engaged, law enforcement notified, passwords reset.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d9 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 14 days

discovery → filing · 9 weeks / 63 days

Oct 1, 2021

Begins

Oct 15, 2021

Discovered

Dec 17, 2021

Filed

vs. sector median

+1 wks slower

This filing is one of 11 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

California State AGbd_bebb4c9aeed4f3d82021-12-18 · +1dVerified
Massachusetts State AGbd_c4c39ce373d212802021-12-18 · +1dVerified
Hawaii State AGbd_051bb6c44cafb8ba2021-12-16 · +1dVerified
Indiana State AGbd_1588fca2d1bfa8322021-12-16 · +1dVerified

Show 6 more filings ↓up to 116d gap

South Carolina State AGbd_35efaac39879658f2021-12-16 · +1dVerified
Oregon State AGbd_8bf42db7d8a305812021-12-16 · +1dVerified
Delaware State AGbd_db69f355c2004d642021-12-16 · +1dVerified
Maine State AGbd_e231ce333384e9702021-12-16 · +1dCandidate
Montana State AGbd_e2f9ba2ba5e4e97c2021-12-16 · +1dVerified
California State AGbd_15c9f8f75b6811f02022-04-12 · +116dVerified

Name: Lewis Brisbois Bisgaard & Smith, PLLC
norm: lewis brisbois bisgaard smith

Name: Tennis Warehouse LLC
norm: tennis warehouse
Industry: Retail & Consumerllm

Discovered: Oct 15, 2021
Breach occurred: Oct 1, 2021
Undetected for: 14 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 16, 2021
Affected individuals: 18,228state-resident count only
Data types: PIICredentialsFinancial account
Data elements: Financial account numberUsername + password
WA-stated cause: Theft or Mistake
WA-stated duration: lifecycle Unknowndexposure Unknownd
WA-stated discovery: Found after the fact
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: Notified Washington Attorney General's Office
Initial access: valid_credentials

During the incident: Engaged an independent computer forensics firm
Reported the incident to law enforcement
Reported the incident to the payment card brands
Worked closely with technical experts to enhance the security of our websites
All user account passwords on the Tennis Warehouse retail website have been reset
Changes made: Worked closely with technical experts to enhance the security of our websites to facilitate safe and secure transactions
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(63 days from discovery to filing)
Compliance flags: WA AG >30d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 10 states

View merged incident ↗

Hawaii State AGDec 16 · first

Indiana State AGDec 16 · first

South Carolina State AGDec 16 · first

Oregon State AGDec 16 · first

Delaware State AGDec 16 · first

Maine State AGDec 16 · first

Montana State AGDec 16 · first

Washington State AG+1d · this page

California State AG+2d

Massachusetts State AG+2d

California State AG+117d

Pattern: first filing Dec 16 (HI), last Apr 12 (CA) — a 117-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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachM11286.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 17, 2021
Raw hash: 840ed8bc366745d6cab4df4e2a545eeabd4b61052cf6ff70a556ea3e399c8bae

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityLewis Brisbois Bisgaard & Smith, PLLC

Victim entityTennis Warehouse LLC

Incidentdiscovered Oct 15, 2021

Stated responseEngaged an independent computer forensics firm

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com