Umbra — Cyber Threats, Attacks & Incidents

Threat entity extracted from intelligence sources

Frequency
3
occurrences
First Seen
April 21, 2026
Last Seen
June 1, 2026

Related Threat Clusters

  • Kelp DAO Exploit: $293 Million Drain Triggers DeFi Contagion

    On April 18, 2026, Kelp DAO's LayerZero-powered cross-chain bridge was exploited, resulting in the theft of 116,500 rsETH, valued at approximately $293 million. The attacker utilized a forged cross-chain message to…

    187 articles · Updated April 18, 2026

Recent Intelligence Reports

  • Arkham Intelligence — info.arkm.com · June 1, 2026
  • Kelp DAO exploiter begins moving stolen funds across chains after Arbitrum ETH freeze — Theblock.Co · April 22, 2026
  • Arbitrum Freezes 30,766 ETH Linked to KelpDAO Exploit - "The Defiant" — Thedefiant · April 21, 2026

CVSS v3.1 Breakdown