Continuous multi-factor authentication (CMFA) re-establishes who is acting throughout a session rather than only at sign-in. Conventional MFA is an event: the identity provider issues a session and everything afterward inherits one decision. MagenTrust treats the factor as a continuing property of the session, scored from entropy, cadence variance, hesitation structure, and micro-corrections in ordinary interaction. The score is consulted at the moment a consequential action is attempted, and the action blocks on a deterministic PASS, CHALLENGE, or INTERRUPT verdict. This differs from step-up MFA, which interrupts the user with a second prompt and still produces a point-in-time answer, and from risk-based MFA, which scores the connection rather than the operator. Only derived numbers are stored: entropy, cadence variance, linearity, and a session signature hash. Raw pointer coordinates and keystrokes are processed in memory and discarded, so there is no biometric template, no card reader, and no second device.