Optimism — Cyber Attacks, Breaches & Threat Activity

Threat entity extracted from intelligence sources

Frequency
12
occurrences
First Seen
November 3, 2025
Last Seen
May 11, 2026

Related Threat Clusters

  • Ronin Blockchain Migrates to Ethereum Layer 2 After Major Security Incident

    Ronin, a blockchain developed by Sky Mavis for gaming, will transition from an independent Ethereum sidechain to an OP Stack-based Layer 2 network on May 12, 2026, causing about 10 hours of downtime. This upgrade aims…

    5 articles · Updated May 11, 2026
  • Balancer DeFi Protocol Loses Over $128 Million in Major Hack

    On November 3, 2025, the Balancer decentralized finance (DeFi) protocol suffered a significant exploit, resulting in losses estimated at over $128 million. The attack targeted Balancer's v2 pools, with funds being…

    11 articles · Updated November 4, 2025
  • CrossCurve Secures $EYWA After Exploit Containment

    CrossCurve, a cross-chain liquidity protocol, reported a successful containment of an exploit involving the $EYWA token on February 2, 2026. Hackers extracted $EYWA from a bridge on the Ethereum network, but the tokens…

    8 articles · Updated February 2, 2026
  • Balancer V2 Vulnerability Leads to Over $1.16 Billion in Stolen Assets

    On November 3, the Balancer V2 DeFi protocol experienced a significant security breach, resulting in the theft of over $70 million initially reported. As investigations progressed, the total amount of stolen assets rose…

    2 articles · Updated November 4, 2025
  • Balancer Suffers $128 Million Exploit Due to Smart Contract Vulnerability

    On November 3, 2025, the Balancer decentralized finance protocol experienced a significant exploit that resulted in the theft of over $128 million from its V2 pools. The attack was attributed to a rounding error…

    29 articles · Updated November 29, 2025
  • Balancer DeFi Protocol Exploit Results in Over $128 Million Loss

    On November 3, 2025, the Balancer decentralized finance protocol suffered a significant exploit, resulting in the theft of over $128 million in digital assets. The attack exploited vulnerabilities in Balancer's V2…

    10 articles · Updated November 6, 2025
  • DEX DNS Hijacking Attack Compromises User Security in DeFi

    A decentralized exchange (DEX) faced a DNS hijacking attack, redirecting users to phishing sites through vulnerabilities in centralized domain registrars. This incident mirrors a similar attack in late 2023, where…

    5 articles · Updated November 22, 2025
  • DNS Hijacking Attacks Target Aerodrome and Velodrome DEXs

    Aerodrome and Velodrome decentralized exchanges (DEXs) experienced DNS hijacking attacks, redirecting users to phishing sites. Attackers exploited vulnerabilities in centralized domain registrars, resulting in the theft…

    5 articles · Updated November 24, 2025

Recent Intelligence Reports

  • From hack to OP Stack: Ronin to migrate from gaming sidechain to Ethereum Layer 2 four ... — Theblock.Co · May 11, 2026
  • From hack to OP Stack: Ronin to migrate from gaming sidechain to Ethereum Layer 2 four ... — Theblock.Co · May 11, 2026
  • CrossCurve Warns of Potential Lawsuit Following $3 Million Cross — Bitget · February 2, 2026
  • CrossCurve Threatens Legal Action After $3M Cross-Chain Bridge Exploit — Decrypt.Co · February 2, 2026
  • Balancer shares plans to begin reimbursing users after November v2 exploit — Cryptorank · November 28, 2025
  • Critical security vulnerability found in Aerodrome, the dex Base — Investx.Fr · November 24, 2025
  • How a Hidden Flaw in Balancer's Smart Contracts (V2) Led to a $128M Crypto Heist — Ccn · November 4, 2025
  • Balancer V2 vulnerability causes losses exceeding $116 million, affecting multiple chain protocols — Bitget · November 4, 2025

CVSS v3.1 Breakdown