Spriv's Adaptive Two Factor Authentication is a multi-factor authentication platform that provides risk-based, automated continuous authentication for various systems and applications. It uses environmental identifiers, device fingerprints, and mobile phone data to authenticate users in the background without repeated user intervention. The system can authenticate some transactions in as little as 175 milliseconds, offering fast and seamless authentication while maintaining security. It integrates with Unix/Linux systems as a Pluggable Authentication Module (PAM), Windows Remote Desktop (RDP), and SSH connections. The solution combines automation, speed, low cost, and precise data, while also detecting if a user has left their desk. It protects against online attacks, malware, and threats that challenge other authentication methods and hardware tokens. The system is compliant with FFIEC, PCI, HIPAA, and SOX standards and does not transfer any personally identifiable information (PII).