A method and system is provided for performing secure online banking transactions. An example method includes: collecting data related to at least one transaction of the online banking operation requested by a user device; creating a plurality of verification scripts based at least on the collected data, wherein each verification script comprising at least one rule requiring collection of one or more types of identification data associated with the transaction, and wherein different verification scripts comprises different rules for collecting different types of identification data associated with the transaction of the banking operation; executing the plurality of verification scripts to collect the required identification data; determining a level of security of performing the banking operation based at least on the identification data collected by the plurality of verification scripts; and determining whether to perform or not to perform the requested banking operation based on the determined level of security.