Mealey's (October 29, 2019, 1:56 PM EDT) -- SAN FRANCISCO — Zendesk Inc. and several of its senior executive officers concealed the company’s exposure to a massive data breach that affected more than 10,000 customers in addition to failing to disclose its poor financial condition in several international markets in violation of federal securities laws, a shareholder argues in an Oct. 24 complaint filed in California federal court (Charles Reidinger v. Zendesk Inc., et al., No. 19-6968, N.D. Calif.)....