Auditing and Network Security

A network security audit helps to evaluate the current state of one network's security, operating systems, and IT infrastructural facilities. This process investigates the customer's cybersecurity policies and network assets to identify any flaws that could put the customer at risk of a security breach. Many businesses are increasingly relying on digital platforms for data collection and storage. To avoid future data breaches by third-party attacks, it is essential for a company to conduct a consistent reevaluation of its existing security systems. Many businesses fail to adequately test their network security, resulting in potentially disastrous data breaches. A network security audit helps determine how effective network security is at resolving underlying network security issues. Network security audits are critical for understanding how well one's organization is guarded against internal and external security threats. 

Network Security

A network security audit is one portion of the entire information systems audit framework which also includes application software audit, operating system audit, and business audit.

The network security audit is examined from two perspectives. The first is static data, which includes protocols used, system definitions, password rules, firewall definitions, and so on. The second component of this type of data security software is concerned with the activities that have occurred. Modifications to files, file transfers, database access, and when and where users log on are just a few of the more prevalent items interpreted in a network security audit. The audit process involves a thorough evaluation of the network, including the system architecture, the use of software and hardware, the significance of the tools used to perform specific actions, the interconnection to external networks, access control and user permissions, the nature of the checks and balances in place, and more.

Auditing

Common steps in a Network Security Audit

Device & Platform Identification

The first step in performing an audit is to identify all of the assets on one's network, as well as the operating systems individuals use. This is essential to ensuring that all threats have already been identified.

Device and Platform Identification

Security Policy Review

In this stage, the auditors examine all company's security policies and procedures to determine whether they meet the standards needed to effectively protect the technology and information resources. For example, who has access to what, and do they really need it. 

Security Policy Review

Security Architecture Review

Whereas the policy review evaluates one's documented policies, the architecture review examines the actual control systems and technologies in place. This builds on the device and platform identification process to provide the client with a comprehensive analysis of their cybersecurity measures.

Security Architecture Review

Risk Assessment

In this phase, the auditor performs various assessments to categorize the systems (process, application, and function), identify threats, and analyze the control environment to identify what one risks are and their possible effects. This information is then used to prioritize the fixes, starting with the biggest threat that is easiest to fix and working down to the smallest threat that is the most difficult to fix.

 

Risk Assessment

Firewall Configuration Review

The client's network firewall is a specific security platform that any auditor would want to thoroughly examine. The auditor should analyze the topology of the client's firewall, rule-base analyses, management processes/procedures, and configuration. The auditor will also most likely evaluate the remote access policies and check to see whether the firewall is updated with the most recent patches.

Firewall Configuration Review

Penetration Testing

Pen tests are a type of stress test for a network's security infrastructure, in which testers attempt to "break" the security architecture in order to find and fix previously unknown issues.

Just after the completion of the audit, the auditing service firms provide a detailed report explaining what they discovered. This step is extremely crucial because it assists in identifying the risks that a company faces so that the most critical fixes can be prioritized.

Penetration Testing

Why One Should Undergo Security Audits Regularly

Network security audits are essential because they assist the company in identifying its most significant security risks, allowing them to implement changes that will protect them from such risks. A network security audit, on the other hand, is never a one-time solution. Companies should conduct such audits at least once every year, if not more frequently.

The problem is that when a company adds new hardware to their business, they're also adding new security endpoints, which could lead to new security vulnerabilities. New software programs, whether they run on individual computers or in the cloud as a SaaS solution, can bring new security vulnerabilities.

New hardware or a new software program running on a single device may not necessarily require a thorough review of the company's security architecture. However, it's easy to lose track of how many changes the company has managed to make over the course of a year. An annual audit allows companies to rebuild a complete picture of their network's overall security status and close any cybersecurity gap that exists which may have been introduced.

When compared to the cost, reputational damage and frustration of a major data breach, the time and effort required to conduct a thorough network security audit would be far beneficial. A regular network security audit is essential for the smooth and seamless operation of networks, and in an increasingly interconnected world where business relies on real-time interactions with suppliers, customers, and others, it becomes a critical practice to ensure the security of company information.

Importance of Security Audit

References

1. https://intigrow.com/network-security-audits.html#:~:text=A%20network%20security%20audit%20helps,they%20are%20internal%20or%20external.

2. https://phoenixnap.com/blog/network-security-audit

3. https://www.compuquip.com/blog/network-security-audit-works

4. https://reciprocity.com/network-security-audit-checklist/

5. https://andersontech.com/network-security-audit/