Scroll users experienced unexpected overcharges exceeding $50,000 in fees due to manual rate adjustments. Over 139,000 users were affected over four days as the team increased L1 data cost parameters. The changes impacted altcoins under observation, with most transactions tied to automated bot trades. L2BEAT confirmed the overcharge resulted from multi-signature wallet adjustments, not the sequencer. Transaction volume declined as Scroll’s TVL dropped 96% to $24 million.

ChainCatcher report: According to L2BEAT analysis, users on Ethereum Layer 2 network Scroll were overcharged more than $50,000 in transaction fees over approximately four days. The cause was the Scroll team manually increasing two rate multipliers in their gas price oracle six times within six days, each time raising them by 2 to 10 times, cumulatively increasing the L1 data cost parameter to 1,280 times the original baseline.The approximately 139,000 affected transactions originally had a total cost of only about $280 but were actually charged over $50,000, with automated bots accounting for the vast majority. L2BEAT noted that the overcharging was not due to a sequencer issue but resulted from multi-signature wallet-approved multiplier adjustments by the team. This has raised external questions about whether Scroll previously subsidized users with below-cost fees to maintain activity. According to DeFiLlama data, Scroll’s current TVL is only $24 million, a 96% decline from its peak of $585 million in October 2024. As of publication, Scroll has not publicly responded.