Strauss Borrelli PLLC, a leading data breach law firm, is investigating Williams & Connolly LLP (“Williams & Connolly”) regarding its recent data breach. The Williams & Connolly data breach involved sensitive personal information belonging to an undetermined number of individuals.
ABOUT WILLIAMS & CONNOLLY LLP:
Williams & Connolly is a law firm based in the District of Columbia. Founded in 1967, Williams & Connolly provides clients with litigation services across a range of practice areas and industries, including class actions and consumer defense, criminal antitrust, environmental litigation, real estate, commercial litigation, and more.2,3,4 Headquartered in Washington, District of Columbia, Williams & Connolly employs over 500 individuals.3
WHAT HAPPENED?
Recently, Williams & Connolly reported to the Attorney General of the Commonwealth of Massachusetts that it had experienced a data breach in which sensitive personal identifiable information in its care may have been compromised. According to the breach notice, in late August 2025, Williams & Connolly discovered unauthorized access to certain systems on its network.1 As a result, Williams & Connolly launched an investigation to determine the nature of the incident.
Through its investigation, Williams & Connolly confirmed that sensitive personal information in employee email accounts may have been accessed by an unauthorized third party during the breach. As a result, Williams & Connolly began a review of the data to determine what information had been impacted as well as identify the specific individuals affected. While the information impacted varies depending on the individual, the type of information potentially exposed includes:5
- Name
- Social Security number
As a result of the breach, Williams & Connolly began mailing data breach notification letters to impacted individuals. Based on the breach notice sent to Massachusetts residents, Williams & Connolly is providing affected individuals with a list of the specific types of sensitive information impacted and 24 months of complimentary credit monitoring services. A link to the breach notification letters that Williams & Connolly filed with the Attorney General of the Commonwealth of Massachusetts is below.
If you received a breach notification letter from Williams & Connolly LLP:
We would like to speak with you about your rights and potential legal remedies in response to this data breach. Please fill out the form, below, or contact us at 872.263.1100 or sam@straussborrelli.com.
