HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedIdentity (basic)LowContained

Proskauer Rose LLP

bd_3e9c0853d95b8301 · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 8, 2023

Filed

Aug 18, 2023

To disclose

19 weeks

Affected

3state residents only

Linked

5 filings

Confidence

66%

Full breach record for Proskauer Rose LLP →2 incidents on file

Proskauer Rose LLP notified Montana residents of a security incident discovered on April 8, 2023, where an unauthorized third party illegally downloaded personal information (name, address) from a cloud-hosted portal. Proskauer engaged forensic experts, reconfigured the portal, and added firewall protections. Affected individuals were offered 24 months of credit monitoring via Experian.

J jump to incidentP pin to compareR raw source

Incident timeline

discovery → filing · 19 weeks / 132 days

Apr 8, 2023

Discovered

Aug 18, 2023

Filed

vs. sector median

+1 wks slower

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Indiana State AGbd_0458d733693715562023-08-18Verified
Massachusetts State AGbd_358f7c0dabbae2602023-08-18Verified
Maine State AGbd_827b17e0441a59682023-08-18Verified by operator
Vermont State AGbd_e6cefb004a1df96d2023-08-18Verified

Name: Proskauer Rose LLP
norm: proskauer rose

Name: Proskauer Rose LLP
norm: proskauer rose
Industry: Professional Servicesllm

Discovered: Apr 8, 2023
Materiality determined: —
Notification sent: Aug 18, 2023
Affected individuals: 3state-resident count only
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: External
Initial access: exploit_public_facing

During the incident: Engaged leading cybersecurity and forensic experts to carry out a full investigation
Reconfigured the Portal
Enabled an additional firewall
Conducted a full review of on-premises environment
Changes made: Enabled an additional firewall
Reconfigured the Portal
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 19 weeks(132 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGAug 18 · first

Massachusetts State AGAug 18 · first

Maine State AGAug 18 · first

Vermont State AGAug 18 · first

Montana State AGAug 18 · first · 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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-573.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 18, 2023
Raw hash: f5f33b0b6350c460adc69af2d48070c7774e0b41ac11206e2e4e477fdd5798c3

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityProskauer Rose LLP

Victim entityProskauer Rose LLP

Incidentdiscovered Apr 8, 2023

Stated responseEngaged leading cybersecurity and forensic experts to carry out a full investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov