A phishing campaign impersonating Anthropic has successfully bypassed leading secure email gateways, including Proofpoint and Microsoft Defender for Office 365. Threat actors are using false invitations to a private AI social media preview to harvest Google and Microsoft credentials. This attack highlights the vulnerability of financial institutions to sophisticated social engineering that evades standard email security controls.
Relevant URL: https://www.darkreading.com/cyberattacks-data-breaches/anthropic-phishing-emails-bypass-security-tools