HackingProfessional ServicesProfessional ServicesStolen CredentialsTargetedIdentity (basic)Government IDFinancial accountMediumContained

Thomas Chandler Thomas & Hinshaw, LLP

bd_9eff95f2bb5f5f03 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 21, 2018

Filed

Jun 26, 2018

To disclose

18 weeks

Affected

34state residents only

Linked

3 filings

Confidence

64%

Full breach record for Thomas Chandler Thomas & Hinshaw, LLP →

Thomas Chandler Thomas & Hinshaw, LLP notified clients of unauthorized access to its computer system occurring Feb 15-21, 2018. The firm discovered the incident on Feb 21, 2018. Affected data included names, SSNs, and potentially bank account numbers and driver's license numbers. The firm engaged external cybersecurity professionals and offered one year of Equifax Credit Watch Silver monitoring.

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Incident timeline

undetected · 6 days

discovery → filing · 18 weeks / 125 days

Feb 15, 2018

Begins

Feb 21, 2018

Discovered

Jun 26, 2018

Filed

vs. sector median

2 wks faster

This filing is one of 3 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Massachusetts State AGbd_68fe77ec99319e122018-06-25 · +1dVerified
New Hampshire State AGbd_b943d64951c8a4b22018-06-22 · +4dVerified

Name: Thomas Chandler Thomas & Hinshaw, LLP
norm: thomas chandler thomas hinshaw
Domain: tcthllp.com

Name: Thomas Chandler Thomas & Hinshaw, LLP
norm: thomas chandler thomas hinshaw
Domain: tcthllp.com
Industry: Professional Servicesllm

Discovered: Feb 21, 2018
Breach occurred: Feb 15, 2018 – Feb 21, 2018
Undetected for: 6 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 34state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Worked very closely with external cybersecurity professionals experienced in handling these types of incidents
Changes made: Continually evaluate and modify our practices and internal controls to enhance the security and privacy of your information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 18 weeks(125 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

New Hampshire State AGJun 22 · first

Massachusetts State AG+3d

South Carolina State AG+4d · 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://consumer.sc.gov/sites/consumer/files/Documents/Business%20Resources%20Laws/Related%20Laws/Breaches/2018/ThomasChandlerThomas.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 26, 2018
Raw hash: c26ce48abeafd4aacb2974c14395e6e8390734e5467b95b4652ef14250aaac3a

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityThomas Chandler Thomas & Hinshaw, LLP

Victim entityThomas Chandler Thomas & Hinshaw, LLP

Incidentdiscovered Feb 21, 2018

Stated responseWorked very closely with external cybersecurity professionals experienced in handling these types of incidents

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceconsumer.sc.gov