This Week in Crypto: Sui’s Triple Crisis, Incoming Stablecoin Rules, and an Unexpectedly Calm May
It's been a packed week. Stablecoin rules are almost here, a whitehat hero rescued money locked in a 2016 smart contract, and Sui had a very bad 48 hours. Let's get into it.
Sui Went Down Three Times in 48 Hours
Sui's mainnet halted three times between May 28–29: first for 7 hours, then 4.5 hours, then 6 more. All traced back to a single edge case in the v1.72 upgrade that cascaded into three separate bugs. No funds were lost and no transactions reversed, but SUI dropped 19% on the week. This is Sui's third major reliability incident since its 2023 launch.
One upgrade. Three outages. The fix required iterative patches while the network stayed offline each time.
Sui Network Suffers Outages for Two Consecutive Days
— Wu Blockchain (@WuBlockchain) May 29, 2026
Sui’s official X account announced that the mainnet is experiencing network issues, and network activity may be temporarily halted. According to Sui Status, the Sui mainnet has been in a Major Outage for two straight days,… https://t.co/xtidt9eYem pic.twitter.com/7lTonXv221
Sui Network Suffers Outages for Two Consecutive Days
Stablecoin Rules Are Almost Real
The comment period for the GENIUS Act closes today — Treasury, FDIC, and FinCEN have all been collecting feedback on how to regulate stablecoins. The Senate floor reopens June 3 to push this toward an August signing. The stablecoin market just hit a record $322 billion, which is probably why everyone suddenly cares so much.
Banks have been dragging their feet on yield-bearing stablecoins. Regulators are moving anyway. By August, we'll have a much clearer picture of who can issue stablecoins and what they have to hold in reserve.
Stablecoin volume hit ~$4.5T in Q1 2026.
— a16z crypto (@a16zcrypto) April 24, 2026
The GENIUS Act didn't create the trend, but it amplified it. pic.twitter.com/wi8OGYlIQI
Stablecoin volume hit ~$4.5T in Q1 2026
A Whitehat Just Rescued $2M Locked Since 2016
Nine years. That's how long 1,003 ETH sat trapped in a HongCoin ICO smart contract — locked by an integer overflow bug in the refund logic. A researcher named 0xflorent found the flaw, got the project team's sign-off, ran 41 transactions, and freed the funds. Two of the 48 original investors have already withdrawn $193K.
The blockchain is forever. So are the bugs. Respect to 0xflorent — this is also his second publicized recovery in eight days.
May Was the Calmest Month for Crypto Exploits in a While
CertiK reported crypto exploit losses in May totaled $68 million — down 90% from April's brutal $650 million. Third month this year under $100M. Cross-chain bridges still took 42% of losses. $9.4 million was actually recovered or returned.
Still $68M stolen. But compared to April, May felt relatively quiet.
April: ~$651M lost to exploits and phishing.
— CertiK (@CertiK) May 1, 2026
A reflection of how important it is to stay proactive and maintain a security-first mindset. https://t.co/KlOO54UV5R
That's the week. Regulation inching forward, Wall Street tokenizing everything in sight, one developer rescuing ancient ETH, and Sui surviving a triple outage. See you next week.
