The BNB chain was hit by record sandwich attacks in November, affecting thousands of traders

A record 35.5% of BNB Chain blocks were affected by Sandwich attacks in November.

In the last week alone, 645 active Sandwich Bots have been found on the chain. In total, approximately 43,400 DEX traders were affected throughout the test.

Sandwich Bots mine the BNB chain

According to data compiled by Dune Analytics, trading volume on BNB Chain’s DEX reached $9.232 billion that week, with Sandwich Bot transactions contributing $1.322 billion.

A sandwich attack, also called front-running, is an MEV technique where an attacker identifies a pending transaction and strategically places orders before and after it, effectively surrounding the target transaction. Although pre-execution is one of the most common MEV methods, other strategies such as transaction order manipulation and post-execution also occur.

These types of attacks are especially common on decentralized finance (DeFi) platforms and decentralized exchanges (DEX), where mempool transparency exposes transactions before they are confirmed.

In contrast, Ethereum has seen a reduction in sandwich attacks since July, with the percentage dropping from 62.9% to 40.2% over the past five months. Over the past month, more than 12,000 DEX users on the network fell victim to these attacks.

Sandwich attacks in Solana

Solana has also seen a significant increase in such attacks this year. As a result, the Solana Foundation took decisive action against validators involved in sandwich attacks in June 2024. The foundation removed a group of validator operators from its delegation program for their involvement in these attacks, adding that any validator involved in this behavior would be permanent. excluded and their participation is withdrawn.

Tim Garcia, Solana’s head of validator relations, reiterated that enforcement would continue as the foundation detects operators engaging in such malicious activities. Mert Mumtaz, co-founder of Solana provider RPC Helius, explained that while Solana’s design prevents these attacks, some actors modified their validators to enable them. Mumtaz also suggested that other stakeholder groups might adopt similar policies against sandwich attacks in the future.

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