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Seed Phrase Exfiltration

Definition

Seed Phrase Exfiltration is the unauthorized removal or theft of a cryptocurrency wallet’s recovery phrase. This security incident involves the illicit acquisition of a user’s mnemonic seed phrase, which serves as the master key for recovering and controlling a cryptocurrency wallet. Attackers achieve exfiltration through various means, including malware, phishing attacks, physical theft of storage devices, or vulnerabilities in software or hardware wallets. A successful exfiltration grants the perpetrator complete access to all digital assets associated with that seed phrase, leading to irreversible loss of funds for the victim.