SACRAMENTO — As part of a subdued legal settlement, Attorney General Kamala Harris has agreed to drop a data breach lawsuit against Kaiser Foundation Health Plan Inc. if the Oakland managed care provider pays $150,000 to the state and improves its information-handling practices.

The complaint and proposed settlement, both filed without fanfare in Alameda County Superior Court on Jan. 24, stem from the exposure of more than 30,000 names, Social Security numbers, birthdates and addresses belonging to current and former Kaiser employees and their dependents. The information was found on an unencrypted external hard drive sold at a Santa Cruz thrift store.