How much threat will Mythos pose to DeFi protocols? This is a question I have been thinking about these days. Coincidentally, I would like to discuss my thoughts in conjunction with the article by Spark CEO @ hexonout The blue chip smart contracts themselves, especially those contracts like Uniswap V2 that have relatively simple code, run for many years, and have been repeatedly studied by countless audit firms and hackers, are not the easiest targets for Mythos' first wave of attacks. The real danger lies in protocols with large code bases, complex dependencies, arbitrary permission management, and a particularly fast pace of deployment. Especially cross chain bridges, revenue aggregators, modified lending protocols, off chain robots, front-end and back-end, private key management, and various infrastructure. Many bugs didn't just appear today, in the future it may be a batch of AI scanning the entire track at the same time: The attacker only needs to find a path that can take the money, while the defender needs to prove that all paths cannot take the money. So what Mythos really accelerates is not the birth of vulnerabilities, but the exposure of vulnerabilities. This pair of long tail DeFi protocols is very cruel, directly leading to polarization, and DeFi's security layering will become increasingly evident: The head protocol, due to its more mature code, sufficient security budget, more complete monitoring, and stronger emergency mechanisms, will actually receive a higher security premium. And many small agreements, magic modification agreements, and nesting profit agreements will become increasingly difficult to hide their grassroots team attributes. Sam also mentioned two things—— Rate Limit: Limit the speed of capital outflow Timelock: Leave an observation window for abnormal operations This actually represents a change in DeFi security thinking: from pursuing absolute immunity from being hacked to controlling the speed of loss after being hacked. This is also why I think protocols like Spark @ spakdotfi are worth understanding in this context—— SparkLend is based on Aave V3 and retains mechanisms such as supply ceiling, borrowing ceiling, debt ceiling, isolation mode, and oracle sentinel. More importantly, in the security model of Spark Liquidity Layer, Relayer is directly defined as a role that can be completely breached. Under this assumption, Spark streamlines lending assets, whitelists, and limits by going online Rate Limit、 Measures such as sliding point restrictions and freezing permissions greatly limit the scope of damage caused by a single accident. Looking at these two together, Spark is not only not the most dangerous protocol in the Mythos era, but may also become one of the easiest protocols to undertake fund concentration as security budgeting, risk isolation, and loss control become increasingly important.