Offchain Labs Develops Defense Mechanism to Combat MEV Searchers

On February 27, the Arcitrum development team Offchain Labs is developing a defense mechanism entitled \”Add random number of relay client connections\” to preve…

Offchain Labs Develops Defense Mechanism to Combat MEV Searchers

On February 27, the Arcitrum development team Offchain Labs is developing a defense mechanism entitled “Add random number of relay client connections” to prevent MEV searchers from witching attacks on sequencers. This mechanism requires that the random number must be unique among different clients. The relay will broadcast messages to clients in the order of the target value of the random number from high to low, and the client with the highest target value of the random number will receive the message as soon as possible. If the target value of the random number of two connections is the same, then the client with a lower hash value will receive the broadcast first, and then propagate it to other relays.

Arcitrum development team Offchain Labs will launch a defense mechanism against sequencer witch attacks

Analysis based on this information:


Offchain Labs is a development team for the Arcitrum Project that specializes in developing blockchain systems. On February 27, the team announced the creation of a new defense mechanism designed to counter MEV searchers from launching witching attacks on the sequencers of distributed ledgers.

MEV, or Miner Extracted Value, refers to the profits that miners can make by manipulating the order of transactions within a block. This mechanism allows miners to prioritize transactions that offer the highest fees, which can lead to higher profits, but can also cause harm to the network.

The new mechanism, called “Add random number of relay client connections,” requires that the number generated by the mechanism be unique among different clients. The relay then broadcasts messages to the clients in order of the target value of the random number, starting from the highest to the lowest. The client with the highest target value of the random number will receive the message as soon as possible. However, if two connections have the same target value, the client with a lower hash value will receive the broadcast first and propagate it to other relays.

This defense mechanism is designed to reduce the security risks associated with MEV searchers who try to exploit the system by manipulating the order of transactions within the block. By adding a random number of relay client connections, this mechanism makes it more difficult for MEV searchers to predict which transactions will be prioritized by the network, thus reducing their ability to perform witching attacks.

In conclusion, Offchain Labs’ development of a new defense mechanism for combating MEV searchers has the potential to bring about significant changes in the blockchain world. The mechanism is designed to improve the security of distributed ledgers and reduce the harm caused by MEV searchers. As blockchain technology continues to grow and evolve, the development of new and innovative defense mechanisms will become even more critical in safeguarding the integrity of these systems.

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