Goodwin Procter found itself the victim of a cyberattack, the firm acknowledged Tuesday, after a vendor to the firm that handles large file transfers was hacked, allowing the intruders to access data the third party had handled for the law firm. 

In an internal memo obtained by Law.com, Goodwin managing partner Mark Bettencourt said the firm was informed Jan. 22 by a third-party vendor that it had experienced a “security issue with the service” Jan. 20.