Loading Ratings...
Both Sui and Solana blockchains recently faced large-scale DDoS attacks. While Solana held up under pressure, Sui suffered visible slowdowns.
Author: Sahil Thakur
Published On: Tue, 16 Dec 2025 05:13:30 GMT
16th December 2025 – Both Sui and Solana blockchains recently faced large-scale distributed denial-of-service (DDoS) attacks. While Solana held up under pressure, Sui suffered visible slowdowns.
The Sui incident happened on December 14, 2025, and spilled over into the next day. Users noticed major transaction delays. Validators struggled to keep up, but the chain stayed online.
In contrast, Solana has been under attack for over a week—since around December 8. Despite this, it kept processing transactions smoothly.
The Sui network has 127 validators. Critics argue this number is too low for a secure, decentralized Layer 1 chain. The smaller validator set made the network easier to target. Attackers were able to disrupt block production without fully halting the chain.
Some called the event a “free stress test.” Others compared Sui’s validator structure to Solana’s, which has over 800 validators. These numbers make it harder for attackers to impact the entire network.
Developers and analysts suggested basic DDoS protection tools like Fail2Ban or iptables at the validator level. However, they agreed that Sui needs architectural improvements to scale securely.
The attack comes just months after smart contract exploits hit Sui-based projects like Typus Finance and Nemo Protocol. Those incidents drained millions, adding to the concerns about network reliability.
So far, the Sui Foundation has not released an official statement.
Solana is also under a sustained DDoS attack, but it has shown surprising resilience. Most users did not notice any slowdown. Apps continued working. Even stablecoin activity reached an all-time high of $16.6 billion in circulating supply.
Experts credited Solana’s performance to major backend upgrades over the past two years. The chain previously suffered from outages during high traffic events in 2021 and 2022. But now, it appears to have matured.
The validator count on Solana has dropped from ~2,500 to ~800 since 2023. However, the higher count still offers more DDoS protection than Sui. Also, Solana uses deterministic leader schedules and internal stress testing to prepare for such events.
Some see this attack as part of a larger pattern. On December 12, Solana project Almanak postponed its airdrop due to DDoS issues. This incident may be connected to the broader assault on Solana’s infrastructure.
Solana co-founder Raj Gokal confirmed the attack but highlighted that performance remained strong. Helius CEO Mert described the event as invisible to most users, calling it proof of network maturity.
Meanwhile, some on crypto X speculated about a “chain war” between ecosystems. Theories included sabotage by competitors or ideologically motivated actors targeting high-throughput networks.
In contrast, Sui’s delays reignited the decentralization debate. Crypto researcher Justin Bons used the incident to warn other chains, including Solana, not to cut validator counts further.
Real voices. Real reactions.
SUI was DDoS attacked yesterday causing mass delays Proving again that 127 validators is not enough Sufficient decentralization demands a larger attack surface Let this be a lesson for SOL not to let validator counts drop too low. We must win on scalability & decentralization!
Update: @SuiNetwork experienced degraded performance due to a DDoS targeting validators However, all is fixed now and performance has normalized âś… https://t.co/vY8yuibS1o
solana has been under a colossal DDoS attack for at least over a week now btw the fact that you havent experienced it is a big testament to the level of engineering present here
Our Crypto Talk is committed to unbiased, transparent, and true reporting to the best of our knowledge. This news article aims to provide accurate information in a timely manner. However, we advise the readers to verify facts independently and consult a professional before making any decisions based on the content since our sources could be wrong too. Check our Terms and conditions for more info.
IoTeX Secures Full MiCA Compliance Across the European Union
Helios Layer1 TGE Scheduled for December 19
MetaMask Native Bitcoin Support Goes Live for 30 Million Users
Corners Platform Launch Introduces Tokenized Content Curation
IoTeX Secures Full MiCA Compliance Across the European Union
Helios Layer1 TGE Scheduled for December 19
MetaMask Native Bitcoin Support Goes Live for 30 Million Users
Corners Platform Launch Introduces Tokenized Content Curation
