Introducing variance to online system access procedures

A method, comprising:

• implementing, at a computer system, a user interface having a plurality of data input fields, wherein one or more of the data input fields comprise requests for inputs of profile information associated with at least one user account of a transaction service;
• receiving, by the computer system, a first set of user access requests associated with the user interface;
• initiating, by the computer system, a security test by changing at least one property of the plurality of data input fields for a defined time interval;
• receiving, by the computer system, a second set of user access requests associated with the user interface and made during the defined time interval;
• and
• after the defined time interval, determining, by the computer system, characteristics of the second set of user access requests relative to the first set of user access requests.

A non-transitory computer-readable medium having instructions stored thereon that are executable by a computing device to perform operations, comprising:

• receiving a plurality of requests to access at least one user account of a transaction service;
• implementing a security procedure when at least one threshold for unsuccessful access requests to the at least one user account is exceeded;
• initiating a change to the security procedure for a defined time interval, wherein the change includes a change to the at least one threshold for the defined time interval;
• and
• after the defined time interval, determining characteristics of scripted access requests based on an assessment of unsuccessful access requests after the change to the security procedure relative to unsuccessful access requests before the change to the security procedure.