PhysicalProfessional ServicesProfessional ServicesTheftCustomer Data InvolvedEmployee Data InvolvedGovernment IDIdentity (basic)Financial accountPIIMediumContained

Cohn Handler Sturm

bd_c62c48769ab371ed · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 29, 2017

Filed

Sep 8, 2017

To disclose

6 weeks

Affected

Not disclosed

Confidence

64%

Full breach record for Cohn Handler Sturm →

Cohn Handler Sturm notified clients and employees of a data breach after a partner's PIN-protected cell phone was stolen on July 29, 2017. The stolen device contained access to the partner's work email account, potentially exposing Social Security numbers, driver's license numbers, and financial account numbers. The firm immediately changed account credentials, remotely wiped the device, and notified law enforcement. Identity theft protection services were offered to affected individuals.

J jump to incidentP pin to compareR raw source

California clockDiscovered Jul 29, 2017 → Notified Sep 11, 201744d ✓ CA 60-day OK6 weeks discovery → filing

Incident timeline

discovery → filing · 6 weeks / 41 days

Jul 29, 2017

Begins

Jul 29, 2017

Discovered

Sep 8, 2017

Filed

vs. sector median

12 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Cohn Handler Sturm
norm: cohn handler sturm
Domain: cohnhandlersturm.com

Name: Cohn Handler Sturm
norm: cohn handler sturm
Domain: cohnhandlersturm.com
Industry: Professional Servicesllm

Discovered: Jul 29, 2017
Breach occurred: Jul 29, 2017
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 11, 2017
Affected individuals: Not disclosed
Data types: Government IDIdentity (basic)Financial accountPII
Data elements: Social Security number
Attack vector: Unknown
MITRE ATT&CK: T1052 Exfiltration Over Physical Medium
Threat actor: External
Regulator citations: Notified law enforcement and the applicable state agencies

During the incident: Immediately began an investigation into the matter
Changed all account information
Instructed the email account to remotely delete from the phone upon connecting to the internet
Notified law enforcement and the applicable state agencies
Reviewing our security policies and procedures
Offering identity theft protection services through ID Experts
Changes made: Reviewing our security policies and procedures to ensure all appropriate steps are taken
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(41 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: Jul 29, 2017
→ Notified: Sep 11, 2017
44d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Jul 29, 2017 → Notified: Sep 11, 2017	44d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

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/sb24-101725
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 8, 2017
Raw hash: e74161811419cb32e4e1aeed572b802769f0673c40287de2d700cecbdc79b95c

Reporting entityCohn Handler Sturm

Victim entityCohn Handler Sturm

Incidentdiscovered Jul 29, 2017

Stated responseImmediately began an investigation into the matter

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov