The best way to detect unauthorized copies of licensed software on systems is to conduct periodic software scanning. Software scanning is a process of using specialized tools or programs to scan the systems and identify the software installed, the license status, the usage, and the compliance with the software policies and agreements. Software scanning can help to detect any unauthorized, unlicensed, or illegal copies of software on the systems, as well as any discrepancies or violations of the software licenses. Software scanning can also help to optimize the software inventory, reduce the software costs, and improve the security and performance of the systems12.
Some examples of software scanning tools are:
* Microsoft Software Inventory Analyzer (MSIA): A free tool that scans Windows-based computers and servers and generates reports on the Microsoft products installed, such as operating systems, applications, and updates3.
* Belarc Advisor: A free tool that scans Windows-based computers and generates reports on the hardware and software installed, including license keys, versions, usage, and security status4.
* Lansweeper: A paid tool that scans Windows, Linux, Mac, and other network devices and generates reports on the hardware and software inventory, license compliance, configuration, and vulnerabilities5.
To conduct periodic software scanning, you need to:
* Choose a suitable software scanning tool that meets your needs and budget.
* Define the scope and frequency of the software scanning, such as which systems to scan, how often to scan, and what information to collect.
* Configure and run the software scanning tool according to the instructions and settings.
* Review and analyze the software scanning reports and identify any unauthorized copies of licensed software on the systems.
* Take appropriate actions to remove or regularize the unauthorized copies of licensed software on the systems.
* Document and report the results and findings of the software scanning.

The best way to ensure that potential security issues are considered by the development team as part of incremental changes to agile-developed software is to include a mandatory step to analyze the security impact when making changes. This will help to identify and mitigate any security risks or vulnerabilities that may arise from the changes, and to ensure that the software meets the security requirements and standards. The other options are not as effective, because they either delegate the security analysis to someone outside the development team, rely on post-deployment testing, or focus on documentation rather than analysis. References: CISA Review Manual (Digital Version)1, Chapter 4, Section 4.2.5

When a program release needs to be backed out of production, the changes introduced by that release must be removed from the source code to ensure the system returns to its prior state. This approach ensures that the source code reflects the stable version without the problematic changes.
References
* ISACA CISA Review Manual 27th Edition, Page 244-245 (Change Management)

The most critical factor for the success of an information security program is management's commitment to information security. Management's commitment to information security means that the senior management supports, sponsors, funds, monitors and enforces the information security program within the organization.
Management's commitment to information security also demonstrates leadership, sets the tone and culture, and establishes the strategic direction and objectives for information security. User accountability for information security, alignment of information security with IT objectives, and integration of business and information security are also important factors for the success of an information security program, but they are not as critical as management's commitment to information security, as they depend on or derive from it. References: Info Technology & Systems Resources | COBIT, Risk, Governance ... - ISACA, IT Governance and Process Maturity

Network segmentation is the best security measure to reduce the risk of propagation when a cyberattack occurs, because it divides the network into smaller subnetworks that are isolated from each other and have different access controls and security policies. This limits the spread of malicious traffic and prevents attackers from accessing sensitive data or systems in other segments. Aperimeter firewall, a data loss prevention (DLP) system, and a web application firewall are also useful security measures, but they do not prevent propagation within the network as effectively as network segmentation does. References: CISA Review Manual (Digital Version)1, Chapter 5, Section 5.2.3