# Jones Day law firm hit by ransomware attack exposing client files

_Tuesday, April 7, 2026 at 8:05 AM EDT · Cybersecurity · Latest · Tier 1 — Major_

Global law firm Jones Day has suffered a ransomware attack that resulted in the exposure of client files, according to a report from The Lawyer.

The breach affected the firm's client data, with attackers threatening to publish stolen information. Jones Day is among the largest law firms in the world, with more than 2,400 lawyers across 18 countries. The firm serves numerous Fortune 500 companies and has handled high-profile litigation and corporate matters.

Ransomware attacks against major law firms have become increasingly common as threat actors target organizations with sensitive client data. Law firms are attractive targets due to the confidential nature of their work, which often includes merger negotiations, intellectual property, and executive communications.

Jones Day has not publicly disclosed the full scope of the breach or whether ransom demands were made. The incident represents the latest in a series of cybersecurity incidents affecting professional services firms.

## Sources

- [The Lawyer](https://www.thelawyer.com/data-breach-exposes-jones-day-client-files-after-ransomware-threat/)

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Retrieved: 2026-04-21T22:19:49.314Z
Publisher: Tech & Business (techandbusiness.org)