Mofi, a protocol engineer at software development company OP Labs, hinted at a major upgrade on the Optimism mainnet. The proposed upgrade targets tackling a few security vulnerabilities discovered by Spearbit, Cantina, and Code4rena during security audits. However, there have yet to be any exploit reports on these vulnerabilities. Therefore users’ assets remain safe. Optimism has proposed introducing a set of smart contract upgrades and an L2 hard fork to fix these loopholes. The smart contract upgrades will fix the identified vulnerabilities, while the L2 hard-forking will improve the stability and performance of the fault-proof system.
Source: https://coinpedia.org/crypto-live-news/optimism-set-for-major-upgrade-on-mainnet-to-tackle-security-vulnerabilities/