SEC Commissioner Kara Stein wants Finra to strengthen its penalties for noncompliant broker-dealers, saying the current sanctions are too weak for deterrence.

“Your enforcement cases must be impactful, and provide strong motivation for compliance,” the Democratic SEC commissioner said at a meeting of Finra’s Market Regulation Division.. “Recidivists should be treated more harshly.”

With trading decisions increasingly being made by computers, Stein said those who write the computer code should be aware of Finra regulations and be held responsible if they break them.

Additionally, Stein said she wants best execution standards updated and best practices improved.