Cal. Civ. Code § 1812.610
(b) An auctioneer shall not state at an auction that an increased bid greater than that offered by the last highest bidder has been made when, in fact, no person has made an increased bid. Notwithstanding the foregoing, an auctioneer or another authorized person may place a bid on the seller’s behalf during an auction of real property that would not result in a sale of the real property, if both of the following are true:
(c) For the purpose of the conduct of online auctions of real property, “notice” means a statement of the information required to be given under paragraph (1) of subdivision (b) within the end user license agreement, terms of service, or equivalent policy posted on, or provided by, the operator of an Internet Web site, online service, online application, or mobile application, and by conspicuously posting the information required to be given under paragraph (1) of subdivision (b) in any of the following ways: