HackingProfessional ServicesProfessional ServicesVulnerability ExploitSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountHealth (basic)CredentialsEmploymentHighContained

KIRKLAND & ELLIS LLP

bd_5014b08744e1235e · schema v1 · pii pii-v1

Severity

High

Discovered

Jan 23, 2024

Filed

Jun 12, 2024

To disclose

20 weeks

Affected · nationwide

11,156155 in this filing

Linked

10 filings

Confidence

66%

Full breach record for KIRKLAND & ELLIS LLP →2 incidents on file

Kirkland & Ellis LLP reported a data breach involving its third-party vendor, Progress Software's MOVEit Transfer solution. The incident occurred between May 27-31, 2023, and was discovered on January 23, 2024. Approximately 11,156 individuals were affected, including 155 Maine residents. Compromised data included names, contact info, government IDs, financial accounts, health info, credentials, and employment data. The firm engaged forensic experts, notified law enforcement, and offered 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Jan 23, 2024 → Filed with AG Jun 12, 2024141d ✗ ME AG >90d20 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 · 241 days

discovery → filing · 20 weeks / 141 days

May 27, 2023

Begins

Jan 23, 2024

Discovered

Jun 12, 2024

Filed

vs. sector median

+1 wks slower

This filing is one of 10 about the same incident.View merged incident

Part of Progress Software Corporation supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Ransomware claims (2)

Leak Sitecl0pbd_2a6a38a4fce50e7f2023-06-29 · +349dVerified by operator
Leak Sitecl0pbd_a8a40d279b2b72b92023-06-29 · +349dVerified by operator

Regulatory filings (7) · sorted by filing gap

California State AGbd_02237a7cc8f297a42024-06-12Verified by operator
Montana State AGbd_76e20d53b936d6eb2024-06-12Verified by operator
Washington State AGbd_e570578a73aa4c7e2024-06-12Verified
New Hampshire State AGbd_7817adae867820ef2024-06-17 · +5dVerified by operator

Show 3 more filings ↓up to 279d gap

Illinois State AGbd_cfca829068da16642024-06-01 · +11dVerified by operator
Vermont State AGbd_0f2b6129de255d012024-05-28 · +15dVerified by operator
Massachusetts State AGbd_45f3062279233bd32023-09-07 · +279dVerified by operator

Name: KIRKLAND & ELLIS LLP
norm: kirkland ellis
Domain: kirkland.com
Industry: professional_services

Name: KIRKLAND & ELLIS LLP
norm: kirkland ellis
Domain: kirkland.com
Industry: professional_services
Industry: Professional Servicesllm

Discovered: Jan 23, 2024
Breach occurred: May 27, 2023 – May 31, 2023
Undetected for: 241 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 28, 2024
Affected individuals: 11,156state + nationwide
Data types: Identity (basic)Government IDFinancial accountHealth (basic)CredentialsEmployment
Data elements: Date of birth
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain CompromiseT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Reported the issue to law enforcement
Third party: via Progress Software
Initial access: supply_chain

During the incident: Initiated an investigation
Took steps to secure relevant systems
Working with leading cybersecurity experts
Reported the issue to law enforcement
Put in place additional monitoring measures
Changes made: Offered 24 months of complimentary credit monitoring and identity restoration services through Experian
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 weeks(141 days from discovery to filing)
Compliance flags: ME AG >90d · 141dLeak >180dME resident >60d · 126d
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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jan 23, 2024
→ Filed with AG: Jun 12, 2024
141d 90 days ME AG >90d
Maine
Discovered: Jan 23, 2024
→ Notified: May 28, 2024
126d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jan 23, 2024 → Filed with AG: Jun 12, 2024	141d	90 days	ME AG >90d
Maine	Discovered: Jan 23, 2024 → Notified: May 28, 2024	126d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 8 states

View merged incident ↗

Massachusetts State AGSep 7 · first

Vermont State AG+264d

Illinois State AG+268d

California State AG+279d

Montana State AG+279d

Washington State AG+279d

Maine State AG+279d · this page

New Hampshire State AG+284d

Pattern: first filing Sep 7 (MA), last Jun 17 (NH) — a 284-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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/07307987-e260-42cf-bc93-0f2a5fafafe9.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 12, 2024
Raw hash: 5698045cea29ed93650be8a0cb012309f0f0e6eac115aeca590662c3ee5cae59

Linked disclosures

Ransomware claims (2)

Regulatory filings (7) · sorted by filing gap

Reporting entityKIRKLAND & ELLIS LLP

Victim entityKIRKLAND & ELLIS LLP

Incidentdiscovered Jan 23, 2024

Stated responseInitiated an investigation

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov