Mealey's (September 28, 2016, 1:27 PM EDT) -- SAN JOSE, Calif. — With the filing of a New York man’s Sept. 24 complaint against Yahoo! Inc. in California federal court, at least five class action lawsuits have been filed against the Internet giant in the week since it announced a data breach affecting 500 million accounts (Edward McMahon v. Yahoo! Inc., No. 5:16-cv-05466, N.D. Calif.).

(Complaint available. Document #97-161027-008C.)

On Sept. 22, Yahoo announced that it had recently discovered that its network had been hacked in late 2014. This led to the theft of...