The attacker who hit the most financial services organizations over the past 12 months never phished a password. They called an IT support line, convinced an employee to reset their MFA, and registered their own device on the network.
CrowdStrike’s 2026 Financial Services Threat Landscape Report, released this month and covering activity from April 2025 through March 2026, identified Mutant Spider as the single most active threat to the financial services sector. The group’s primary technique was voice phishing over Microsoft Teams. Operators impersonated internal IT support, convinced employees to reset their credentials and multifactor authentication, then registered their own devices on c...