Consulting Firm Greylock Hit With Ransomware Attack Class Action

Greylock McKinnon Associates Inc. was hit with a proposed class action alleging its “deficient data security practices” led to a May 2023 ransomware attack “more than sixty-times larger” than the business consulting firm’s initial estimate.

Greylock failed to implement and maintain industry-standard security practices to prevent a cyberattack, and its negligence resulted in more than 340,000 individuals’ personally identifying information and protected health information being accessed by a hacker last year, according to the complaint filed on Thursday in the US District Court for the District of Massachusetts. The personal data stolen included names, Social Security and driver’s license numbers, ...