Latham & Watkins
340K client records compromised via vendor breach
Law Firm Data Breaches (76 indexed)
Clifford Chance LLP
920K client records from international finance transactions exposed via email compromise
HWL Ebsworth (Australia)
4TB of client legal files stolen from top-10 Australian law firm by ALPHV ransomware
Thompson Coburn LLP
305K individuals affected — ransomware compromised client confidential legal files
Jones Day
560K client records exposed in vendor breach
Fasken Martineau
290K litigation records compromised
Freshfields Bruckhaus Deringer
670K records from antitrust investigations and merger reviews exposed via insider access
Davies Ward Phillips (Canada)
210K client records stolen
Berkeley Research Group
Ransomware during $700M leveraged buyout — M&A intelligence from hundreds of deals exposed
Dentons
670K client records stolen in ransomware attack
Dentons (Global)
2.8M records from 79 offices — largest law firm in world breached via supply chain attack
Ashurst LLP
180K client records stolen in targeted attack
Stikeman Elliott
210K client records stolen
White & Case LLP
190K records from international arbitration cases exposed via compromised cloud storage
Herbert Smith Freehills
210K litigation records compromised
Goodmans LLP (Canada)
150K client records exposed in phishing
DLA Piper (Global)
2.1M client records exposed via third-party eDiscovery platform breach — regulatory filings
Simpson Thacher & Bartlett
450K leveraged buyout records exposed — private equity deal data and bank commitments
McCarthy Tetrault
340K client records exposed in targeted attack
Hogan Lovells
280K client records exposed in phishing attack
Weil Gotshal & Manges LLP
420K bankruptcy case records exposed — creditor claims and restructuring plans compromised
Bennett Jones (Canada)
190K client records compromised
Mayer Brown LLP
320K client records from structured finance deals exposed via phishing attack on partners
DLA Piper (2024)
560K client records exposed in network intrusion