Sui, a decentralized layer-1 blockchain designed for swift smart contract deployment, faced a significant outage on Nov. 21, halting block production for over an hour.
According to data from the Sui Network explorer, SuiVision, no blocks were produced after 9:15 a.m. UTC, marking a serious disruption.
Industry reactions
Observers quickly weighed in on the downtime, with some noting Sui’s aspirations to rival Solana, the fourth-largest cryptocurrency by market capitalization.
“SUI blockchain is down. And they claimed to be a Solana Killer,” crypto YouTuber Ajay Kashyap commented on X.
Impact on SUI token and exchanges
The outage also affected SUI, the blockchain’s native cryptocurrency, which dropped nearly 11%, trading at approximately $3.40.
Despite the decline, SUI remained up 75% over the past 30 days, according to CoinGecko data.
Some exchanges responded to the disruption, with South Korean platform Upbit temporarily suspending SUI deposits and withdrawals, citing network issues.
Sui Foundation addresses the issue
Roughly two hours after the block production halt, the Sui Foundation acknowledged the problem on X, stating, “We’ve identified the issue, and a fix will be deployed shortly.”
Possible cause: A DOS bug
Web3 security firm ExVul suggested a denial-of-service (DOS) bug might have caused the outage.
“After our analysis, it was found that the Sui Network node occurred DOS due to integer overflow,” ExVul wrote in an X post.
Moving forward
The outage has raised questions about the reliability of Sui as it aims to compete with established networks like Solana.
Observers will be watching closely as the blockchain works to resolve the issue and restore confidence in its system.
