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Leak SiteState AGConfirmed10 filings · 8 statesLifecycle stage 2 of 3: ConfirmedUnverified claimConfirmedEnforcedhigh sensitivity
Merged incident · 10 filings

KIRKLAND & ELLIS LLP — May 2023 breach

Clustered 10 filings across 9 jurisdictions · filing window Jun 29, 2023 → Jun 17, 2024. View entity profile → Other incidents for this victim →

⚠ 2 cross-filing discrepancies →Merge100%

Determination

Confirmed

Members

10 filings

States

8

Affected · reported

11,156

First → last filing

Jun 29, 2023 → Jun 17, 2024

Merge confidence

100%

incident inc_cfa39fa720854cca · merged by human · confidence 100%

Part of the Progress Software Corporation supply-chain incident (2023) — at least 97 organizations filed notifications naming this third party.
Confirmed breach. Merged as one breach: 8 regulatory filings and 2 unverified claims. The filings describe a third-party compromise. Intrusion May 27, 2023–May 31, 2023, discovered May 27, 2023 — the first regulatory filing landed 103 days later (flagged late). 11,156 individuals reported across the linked filings. Data reported: Government ID, Identity (basic), Financial account, and 5 more. Notifications rolled out on a 354-day schedule across 8 filings beginning Jun 29, 2023. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Supplemental
Notification delay
103days

Discovered → first regulatory filing

Discovery variance
241days

Range of discovered_at dates across filings

Leak precedence
70days before filing

Days between the first leak-site claim and the first regulatory filing. Positive = the claim came first (public exposure before disclosure). Negative = the claim trailed the filing, so there was no pre-disclosure leak. Counts regulatory filings only — press coverage is not a regulatory disclosure.

Filing span
354days

Time between earliest and latest filing

Not recorded for this incident

Materiality delta · SEC filing delay — no SEC 8-K in this cluster.

Regulatory clocksLeak gap✗ Leak >180dVermont✗ VT AG >45 bdayMaine✗ ME AG >90d · 141dCalifornia✗ CA 60-day late · 363dFull clock table in Litigation Timeline

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Kirkland & Ellis LLP data breach (2023) · DisclosureLens