CryptoUpdated×2•Originally published 31 May 2026•Updated 1 June 2026•
2 min read

Sui Foundation Traces Mainnet Halts to Upgrade Bugs

Key Facts

1The Sui Foundation attributed three mainnet halts to software bugs introduced during upgrades.
2The foundation confirmed that no user funds were at risk during the downtime incidents.

In a move reflecting the critical importance of network reliability in the blockchain sector, the Sui Foundation has released a post-mortem on recent technical disruptions. The foundation attributed three mainnet halts to software bugs introduced during protocol upgrades, noting that in one instance, a fix was known to carry a potential risk of halting the system. Crucially, the foundation confirmed that no user funds were at risk during these incidents, highlighting that AI agents played a pivotal role in accelerating the diagnosis and resolution of the technical issues.

These disclosures come as Layer 1 blockchains face intense scrutiny over uptime and scalability. Similar to past incidents seen in peer networks like Solana, network instability can significantly impact investor sentiment and decentralized finance (DeFi) activity. Per market data, maintaining a seamless operational track record is vital for Sui to compete for liquidity against established protocols. The foundation's transparency regarding upgrade bugs is seen as a necessary step to rebuild confidence and mitigate the bearish pressure often associated with technical outages.

Moving forward, market participants will closely monitor the stability of future protocol deployments to ensure these vulnerabilities are fully addressed. Additionally, traders should keep an eye on broader economic indicators, such as the US CB Consumer Confidence which reported at 93.1 on May 26, as shifts in global risk appetite continue to influence the broader cryptocurrency market.

Latest Updates · 1

  1. Notable·

    Update: Detailed reports indicate that the network experienced three complete shutdowns within a 48-hour window on May 28 and May 29. The cumulative downtime exceeded 18 hours, with the technical failures specifically traced to the v1.72 upgrade which disrupted core protocol operations.