Clifford Chance
340K client records compromised in network breach
Law Firm Data Breaches (76 indexed)
Latham & Watkins LLP
820K client records exposed via compromised document management system — litigation files
Torys LLP (Toronto)
180K client records compromised
Kirkland & Ellis
340K client records compromised in targeted phishing
Orrick, Herrington & Sutcliffe
637K individuals affected — healthcare and financial client data stolen in 2023 attack
Cravath Swaine & Moore LLP
SEC insider trading investigation — Chinese hackers targeted deal data in M&A cases
Allen & Overy LLP (UK)
LockBit ransomware encrypted partner systems — M&A deal data and client confidences exposed
Norton Rose Fulbright
340K client records exposed — immigration case files and patent applications compromised
Cadwalader Wickersham & Taft
Data breach affecting client confidential records
MOVEit Transfer (Legal Sector)
Cl0p ransomware zero-day — law firms, courts, government agencies affected globally
Casepoint Legal Technology
ALPHV/BlackCat ransomware — government and corporate legal discovery platform compromised
HWL Ebsworth
65K client and case files stolen in ALPHV/BlackCat ransomware
HWL Ebsworth (Law Firm)
ALPHV/BlackCat stole 4TB from top-tier Australian law firm — client legal data published
Goodwin Procter (Canada ops)
Law firm data breach impacted Canadian operations
Proskauer Rose LLP
184K records from mergers and capital markets deals exposed via unsecured cloud bucket
McCarthy Tetrault (Canada)
850K client records from Canadian corporate transactions exposed — LockBit claimed breach
Orrick Herrington & Sutcliffe
638K client records including health data exposed — firm handling major data breach litigation
Lee & Associates (BC)
Ransomware encrypted client case files
Bryan Cave Leighton Paisner
1.6M records exposed including Mondelez employee data — ransomware on law firm systems
Cassels Brock & Blackwell
Major Canadian law firm targeted in cyberattack
Tucker Ellis
85K client records exposed in data breach
Campbell Conroy & O'Neil
Ransomware hit law firm serving Fortune 500 clients
Goodwin Procter
Client data exposed in Accellion FTA breach
Goodwin Procter LLP
M&A deal data accessed through Accellion file-transfer exploit