18 Apr, 2026

Threat actors downgrade FIDO2 MFA auth in PoisonSeed phishing attack

A PoisonSeed phishing campaign is bypassing FIDO2 security key protections by abusing the cross-device sign-in feature in WebAuthn to trick users into approving login authentication requests from fake company portals. The PoisonSeed threat actors are known to employ large-volume phishing attacks for financial fraud. In the past, distributing emails containing crypto seed phrases used to drain cryptocurrency wallets. In […]

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PoisonSeed phishing campaign behind emails with wallet seed phrases

A large-scale phishing campaign dubbed ‘PoisonSeed’ compromises corporate email marketing accounts to distribute emails containing crypto seed phrases used to drain cryptocurrency wallets. According to SilentPush, the campaign targets Coinbase and Ledger using compromised accounts at Mailchimp, SendGrid, HubSpot, Mailgun, and Zoho. The researchers link the campaign to recent incidents, such as the case of Troy Hunt’s Mailchimp account compromise […]

3 mins read