To detect unauthorized disclosure of confidential documents sent over corporate email, monitoring all emails based on pre-defined criteria is the best approach. This involves setting up automated monitoring systems that analyze email content, attachments, and metadata to identify any potential unauthorized disclosures. By defining specific criteria (such as keywords related to confidential information), organizations can proactively detect and prevent leaks. Requiring encryption before sending documents (option A) is important but does not address monitoring for unauthorized disclosures. Firewalls (option B) protect the network but do not specifically focus on email content. Reporting outgoing emails marked as confidential (option C) relies on user self-reporting and may not catch all incidents12. References: 1(https://www.isaca.org/resources/isaca-journal/past-issues/2010/data-governance-for-p

Section: The process of Auditing Information System

Access rights provisioned according to scheme would best help to support an auditor's conclusion about the effectiveness of an implemented data classification program. This would indicate that the data classification program has been properly implemented and enforced, and that the data is protected according to its sensitivity and value. The other options are not sufficient to demonstrate the effectiveness of a data classification program, as they do not show how the data is actually accessed and used by authorized users.
References:
* CISA Review Manual (Digital Version), Chapter 6, Section 6.2.31
* CISA Review Questions, Answers & Explanations Database, Question ID 2042

Developer and deployment personnel should be segregated its main must, nothing else matters.