Provision of domains in secure enclave to support multiple users

A non-transitory machine-readable medium storing instructions which, when executed on one or more processors cause the one or more processors to perform operations comprising:

• receiving a first request at a first operating system executing on a first processor of a computing device to authenticate a first user account associated with a second operating system executing on a second processor of the computing device, the first request including an authentication type and authentication credentials;
• tracking and storing a number of successive failed first user account authentication attempts for each of multiple authentication types;
• delaying authentication of the first user account for a first period of time based on the number of previous successive failed first user account authentication attempts for the authentication type of the first request;
• sending a first message from the first operating system to the second operating system authenticating the first user account in response to determining validity of the authentication credentials;
• and
• in response to determining invalidity of the authentication credentials, sending a second message, from the first operating system to the second operating system, denying authentication of the first user account and incrementing, within the first processor, the number of previous successive failed first user account authentication attempts for the authentication type of the first request.