In federal court, a Texas lawyer accused a company that has previously claimed to be “No. 1 in smart home security” of failing to secure its own systems from its employees, who allegedly intruded on customers’ personal lives.

Matthew McCartney, a partner at Fears Nachawati in Dallas, has filed a class action on behalf of Randy Doty against ADT LLC, also known as ADT Security Services, in the U.S. District Court for the Southern District of Florida.