Ride the Lightning

Cybersecurity and Future of Law Practice Blog
by Sharon D. Nelson Esq., President of Sensei Enterprises, Inc.

Proskauer Law Firm Exposed Clients’ Confidential M&A Data

April 11, 2023

Bloomberg Law reported on April 7 that a data breach at Proskauer Rose exposed client data, including sensitive legal and financial information, which the law firm confirmed.

“Our tech security team recently learned that an outside vendor that we retained to create an information portal on a third-party cloud-based storage platform had not properly secured it,” Joanne Southern, a Proskauer spokeswoman, said via email.

The breach, which the firm called the result of a cyber attack, was first reported by TechCrunch. Data containing financial and legal documents, contracts, non-disclosure agreements and financial deals were released in the leak, according to the report.

Proskauer declined to specify the nature of the data or how long it was exposed.

Southern said the breach stemmed from an attack against the firm’s cloud storage system. The firm resolved the threat two weeks ago and secured the data with an additional firewall, she said.

“Our IT security team immediately took steps to reconfigure the site and secure its data,” Southern said. “This is an ongoing investigation and we have been urgently working with in-house and third-party cybersecurity experts to confirm our current understanding of the facts.”

Proskauer is often a legal adviser for sports clients, including Major League Baseball, the National Basketball Association, Major League Soccer and others. It also represents banks, like Morgan Stanley, and has advised on deals involving JPMorgan Chase & Co.

“We will communicate promptly with all affected parties as soon as we gain sufficient information to responsibly do so,” Southern said.

Sharon D. Nelson, Esq., President, Sensei Enterprises, Inc.
3975 University Drive, Suite 225, Fairfax, VA 22030
Email:   Phone: 703-359-0700
Digital Forensics/Cybersecurity/Information Technology
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