Offchain Labs develops mechanism to prevent attacks on sequencers

02/27/2023 05:43 • NFT Newsflash • 121 views

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

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Offchain Labs, the Arcitrum development team, has come up with a new defense mechanism called “Add random number of relay client connections” to combat attacks on sequencers from MEV (miner extractable value) searchers. The mechanism functions by generating a random number that must be unique among different clients. The relay is responsible for broadcasting messages to clients, based on the target value of the random number, from high to low. In this way, the client with the highest target value of the random number will receive the message first.

If two connections have the same target value for their random number, then the client with a lower hash value will be the one that receives the message first. This will help to prevent multiple relays from receiving the same message at the same time, which can cause a “witching attack” that can lead to slow transaction times, increased fees, and other instability issues on the network.

MEV searchers are constantly on the lookout for opportunities to extract value from the blockchain network, often by manipulating transactions or engaging in other malicious activities. This can be particularly damaging to the sequencer, which is responsible for organizing transactions and validating their legitimacy.

The defence mechanism developed by Offchain Labs helps prevent MEV searchers from conducting such witching attacks, by ensuring that each client has a unique random number that determines when they receive broadcast messages. This not only increases the security of the network but also ensures that transactions are processed more quickly and without any instability issues.

In conclusion, Offchain Labs has developed a mechanism that helps protect the sequencer from attacks by MEV searchers. The unique random number system ensures that messages are delivered to clients in a secure and efficient way, preventing unstable network conditions caused by witching attacks.

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Offchain Labs develops mechanism to prevent attacks on sequencers

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

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