https://patents.google.com/patent/US8584219B1/en?oq=US+8%2C584%2C219
US8584219B1 - Risk adjusted, multifactor authentication - Google Patents
A computer-implemented method comprising: receiving, from a device used by a user, a request to access a resource hosted by a computer system; identifying, by...
multifactor authenticationriskadjustedgooglepatents