Federal Trade Commission officials shared their privacy enforcement plans, including possible fines against company executives, with members of Congress on Wednesday at a hearing on enhancing data security protections.

In the wake of data mishaps at Facebook, Google and other U.S. tech companies last year, legislators have held a series of hearings in D.C. on privacy principles for a possible federal law. Some members of the House Committee on Energy and Commerce Subcommittee on Consumer Protection and Commerce said Wednesday that the FTC’s current enforcement system isn’t enough to deter big companies from engaging in harmful data privacy practices.