From like the way it is and has been for many years?
From their website:
Covenant Aviation Security, a private company under contract with the Transportation Security Administration (TSA), provides passenger and baggage screening at SFO.
Visit Covenant Aviation Security to learn more about security screening at SFO.
I thought it was common knowledge, but anyone who has been through SFO in the last decade should know that they aren’t using TSA for the checks to get to gates. Always seems fast.