Method of and system for authorizing user to execute action in electronic service

A system for authorizing a subject user to perform an action within an electronic service, the subject user being associated with at least one client device, the subject user being associated with the electronic service, the at least one client device being connected to the system via a communication network, the system comprising:

• at least one processor;
• a non-transitory computer-readable medium comprising instructions;
• the at least one processor, upon executing the instructions, being configured to:
• receive, from the at least one client device, a request to access the electronic service, the request including an indication of the subject user, of an object, and of the action that the subject user is desirous of performing on the object within the electronic service;
• based on at least one of the indication of the subject user and the object, retrieve, a set of predetermined rules associated with the at least one of the subject user and the object from a plurality of predetermined rules, each predetermined rule having been coded and stored as a respective bytecode portion, the predetermined rules having been precompiled into the bytecode portions
• execute, the set of predetermined rules, wherein the set of predetermined rules comprises at least one of:
• a first rule for verifying the subject,
• a second rule for verifying the object, and
• a third rule for verifying the action that the subject user is desirous of performing on the object;
• analyze an outcome rendered by the execution of each rule of the set of predetermined rules;
• and
• responsive to the outcome being indicative of a positive result, authorize the subject to perform the action on the object.