Cardano — Cyber Attacks, Breaches & Threat Activity

Threat entity extracted from intelligence sources

Frequency
19
occurrences
First Seen
November 23, 2025
Last Seen
July 23, 2026

Related Threat Clusters

  • SecondFi Phishing Scam Targets Users After Security Breach

    SecondFi has issued a warning about a phishing scam targeting its users via email. The scam claims to be an official recovery notice, urging users to enter a 'Quarantine Mode' and sign a Service Agreement to recover…

    2 articles · Updated July 20, 2026
  • SecondFi Wallet Shutdown After $2.6M Theft Due to Signing Flaw

    SecondFi, a Cardano wallet, announced its shutdown after a security breach allowed attackers to steal 16.1 million ADA, valued at approximately $2.6 million. The attack exploited a signing flaw in the wallet's software,…

    3 articles · Updated July 23, 2026
  • Web3 Security Breach: SecondFi Wallet Exposes Private Keys via Signature Flaw

    In June 2026, the crypto sector faced 40 major hacking incidents, leading to losses of $75.87 million. The SecondFi wallet, part of the Cardano ecosystem, was notably compromised, with attackers transferring…

    2 articles · Updated July 9, 2026
  • $11.58M Exploit of Verus-Ethereum Bridge Exposes Cross-Chain Vulnerabilities

    On May 18, 2026, the Verus Ethereum Bridge was exploited, resulting in the theft of approximately $11.58 million in assets, including ETH, tBTC, and USDC. The attack was identified by Blockaid, which reported that the…

    17 articles · Updated May 18, 2026
  • Wanchain Bridge Hack Results in Theft of 515M NIGHT Tokens

    On July 21, 2026, the Wanchain bridge connecting Cardano and BNB Chain was exploited, leading to the theft of 515 million NIGHT tokens valued at approximately $13 million. The attack was facilitated by a message…

    5 articles · Updated July 21, 2026
  • SecondFi Exploit Results in Over $20 Million Loss for Cardano Users

    SecondFi, a Cardano wallet project, suffered a significant security breach due to vulnerabilities in its wallet generation software. The exploit compromised approximately 178 wallets, leading to confirmed losses of…

    28 articles · Updated June 24, 2026
  • Bonzo Lend Suffers $9M Loss from Oracle Exploit on Hedera

    On July 11, 2026, Bonzo Lend, a decentralized lending protocol on the Hedera network, experienced a significant security breach resulting in losses of approximately $9 million. An attacker exploited a vulnerability in…

    29 articles · Updated July 11, 2026
  • Crypto Theft: $700 Million Stolen Using Traditional Tactics

    In February 2024, hackers stole $700 million in cryptocurrency from victims, including a UK couple who lost $315,000 in Cardano. The attack exploited vulnerabilities in cloud storage where victims kept their wallet…

    4 articles · Updated May 10, 2026
  • Cardano Blockchain Faces Vulnerability Amid Emerging Threats

    Cardano, a prominent blockchain platform, has identified vulnerabilities within its ecosystem. The threats include risks from quantum computing and recent incidents that could compromise security. The Ouroboros…

    2 articles · Updated November 23, 2025
  • Bithumb Halts ADA Transactions for Security Upgrade

    Bithumb, a major South Korean cryptocurrency exchange, announced a temporary suspension of Cardano (ADA) deposits and withdrawals due to critical upgrades to its deposit address system. This suspension will take effect…

    2 articles · Updated April 6, 2026

Recent Intelligence Reports

  • Secondfi Shutdown Ada Theft Wallet Flaw — cointelegraph.com · July 23, 2026
  • Cross-chain protocol exploit drains $9M in NIGHT tokens via signature reuse vulnerability — Pluang · July 21, 2026
  • Wanchain bridge hack drains $13M in NIGHT tokens, causing 30% price drop — Pluang · July 21, 2026
  • Wanchain bridge exploit drains 515M NIGHT token... — Pluang · July 21, 2026
  • SecondFi Phishing Scam Alert: Fake Recovery Emails Target Users — Coingabbar · July 20, 2026
  • Bonzo Loses 77% TVL After $9M Oracle Exploit on Hedera — Kucoin · July 11, 2026
  • Web3 Security Risks Expand: Wallets, L2s, and Supply Chains Under Threat in June — Kucoin · July 9, 2026
  • CoinEdition — coinedition.com · June 24, 2026

CVSS v3.1 Breakdown