Serum: The mainnet program has become invalid, it is recommended to use forked versions such as Openbook

ChainCatcher news, based on the Solana DeFi project Serum, stated: "With the collapse of Alameda and FTX, the Serum program on the mainnet has become ineffective. Since FTX had upgrade permissions, security is at risk, leading to protocols like Jupiter Aggregator and Raydium being removed from Serum; however, there is still hope. Under the leadership of Mango Max, the entire community is working hard to fork Serum."

Serum also stated: "The community-led fork of the Serum V3 program, OpenBook, is currently live on the Solana mainnet, with a daily trading volume exceeding $1 million, and further efforts are underway to expand the project and its liquidity. This means that with the existence of OpenBook, Serum's trading volume and liquidity have dropped to nearly zero. After discovering security risks in the old Serum code, users and protocols can safely use alternative forked versions, such as OpenBook." (source link)