Facebook, Inc.

Andrei Bajenov

Allan Stewart

Jonathan H Frank

Matthew Knight Jones

Christopher William Palow

Alok Menghrajani

Alok Menghranjani

User login information submitted as part of an attempt to log into a computer system is evaluated for unauthorized or illegitimate use based on indicators of suspicious behavior. Example indicators of suspicious behavior include whether the login information is known to have been compromised, whether the login attempt originates from a network source or a physical source that has previously originated an attempt to log in using login information known to have been compromised, and whether multiple login attempts using the login information from multiple users has originated from the source. A suspicion index can be calculated based on the presence of the indicators of suspicious behavior. The system can require enhanced authentication based on the measurement of suspicious behavior.

Growing community of inventors

Palo Alto, CA, United States of America

Andrei Bajenov