What is IT Security Audit: Its Importance, Types, and Examples

  • By Steven
  • Published: May 19, 2024
  • Last Updated: Jun 07, 2024


More organizations than ever are moving to online processes, offering convenience and efficiency to their consumers and clients. However, the move to digital isn’t without its risks; security audits assess the current state of an organization’s IT and data environments and then offer recommendations to improve them. Security audits are an essential aspect of an organization’s approach to data defense, especially when threats are moving and growing daily.

Information security audits help protect an organization’s digital assets from online threats and provide valuable insights into how businesses can improve their security postures. Learning about security audits, their definition, vitality, and critical aspects can significantly influence an organization’s stance and application of security services.

IT Security Audit

What is A Security Audit?

A security audit is a comprehensive assessment, review, and diagnosis of an organization’s data-related environments. As an aspect of cyber threat intelligence, it plays an essential role in evaluating a company’s defenses. It also ensures information confidentiality, integrity, and availability across an organization’s platforms, services, and partnerships. Security audit examples include vulnerability assessments, compliance evaluations, and penetration testing.

How Often Should A Security Audit Be Conducted?

The frequency of a security audit depends on the details of the organization’s size, the data it maintains, and the industry or regulator guidelines to which it adheres. Organizations that keep an in-house or internal security audit team can continuously launch tests and fix issues before they become a significant threat. However, other companies may benefit from hiring third-party or external security audit teams. These teams can launch tests up to four times yearly and provide unbiased recommendations within their reports.  

Types of Security Audits 

There are several ways to classify an information technology security audit, each with a different focus. Some of the more common categorizations include

Compliance Audit

Most security audits evaluate a company’s adherence to compliance, regulatory guidelines, and industry standards. The specific compliance needed for a company differs between locations and data-specific standards, like those outlined in HIPPA and PCI DSS regulations. Organizations are increasingly adopting AI to assist teams in staying within compliance guidelines.

Vulnerability Assessment

These assessments work as mock cyber assaults, alerting officials to any security weaknesses within the system. These assessments aim not to breach an organization’s securities but to understand why the vulnerability occurred and how the organization can mitigate the weakness. These assessments are valuable for organizations that maintain consumer data, as they can discover weaknesses before a threat actor can exploit them.

Penetration Testing

Pen tests are simulated attacks on a company’s system. As a test, the orchestrator simulates breaching the company’s systems and networks and then tests the organization’s response. The goal of these tests is to identify potential security risks from the perspective of a threat actor. If the organization has insight into the potential movement of a threat actor, it can better anticipate and mitigate other security threats.

Risk Assessment

Risk assessments use vulnerability and penetration testing results to generate a risk profile for a specific company. These risk profiles outline the organization’s dangers and offer recommendations to limit those risks. Risk assessment is a significant part of security audits, as they often outline all organizational risks, from potential single-point failures to potential issues with third parties and vendors.

Social Engineering Audit

Security audits aren’t only for an organization’s internals; social engineering is another factor to consider when planning for security breaches. Social engineering is a significant factor for every company, as all employees (including administrators) could be victims of a manipulative crook. These social audits identify potential weaknesses in an organization’s social behaviors.

Configuration Audit

Every organization is different, with varying obligations to its consumers. Consequently, different organizations use various software and configurations to complete work. Compliance with industry standards is often the best way for systems and software to stay “equal” among competitors. However, configuration audits also identify potential security risks with the organization’s system compared to others in the same field.

Internal vs. External Security Audits

Here is a closer look at these differences: 

Internal Audits

Companies that can afford an internal IT team often utilize their skills and familiarity with the organization’s system to conduct audits. These internal audits are often highly effective, as the team can test their audits from within and outside of the system; moreover, officials can conduct these internal audits with specific parameters and goals in mind—helping push their organization towards their ultimate goal while keeping the company’s assets safe.

External Audits

In comparison, third parties conduct external audits, typically not associated with the organization under assessment. These audits are less biased than internal audits, which can benefit a company when it discovers risks and issues that could otherwise benefit malicious in-house actors. External audits are typically done once a year and operate with the information collected by internal audits; however, some external auditors may conduct investigations without consulting internal reports.

How to Conduct a Security Audit

Planning and Scoping

All security audits, whether internal or external, begin with identifying the necessities for conducting the audit. These elements typically include audit objectives, hypothesized outcomes, members of the auditing team, target areas for evaluation, and a list of necessary resources, like access permissions or liquid funds for operational tools.

Information Gathering

After planning their course, the auditor team will begin collecting information about and from the organization’s infrastructure. In this stage, they may review the company’s systems, processes, controls, policies, and procedures, collect documentation, and conduct necessary assessments. Some teams may also interview employees, secretly collecting data about their stance on the organization’s potential security risks and vulnerabilities.

Risk Assessment

When the previous phase finishes, the auditor team can then begin assessing the risks that the organization may be vulnerable to; this includes considering the types of data the company maintains, how the company stores it, how others access that information, and what threats may be interested in obtaining it. The risk assessment phase is crucial to security audits, as the overseeing team can review all security threats an organization may encounter.

Testing and Evaluation

After finishing the risk assessment, the audit team launches a series of tests. These tests review the organization’s current controls and policies regarding threats. Upon finishing the assessment, the auditor team begins compiling an evaluation of the response and its potential outcomes if an authentic attack with similar attributes were to happen.

Findings and Recommendations

After completing the evaluations, the auditing team will report to the organization, outlining their findings and recommendations for improving the company’s security policies or structure. The report may include risk ratings, outlining the chances of a particular threat occurring and the potential impacts of that event.


In the final step of a security audit, the auditor team (internal or external) will present a security report to the organization. These reports contain everything about the assessments and the company’s responses to threat actors. They often also include recommendations for improving the company’s security stance.

Reasons to Conduct Regular Security Audits

Here are the basic reasons why conducting regular security audits is essential to maintaining robust and effective security protocols.

Identify and Address Security Vulnerabilities

Security audits should be completed annually (at minimum), but many organizations benefit from conducting them more often. Regular audits allow companies to identify new vulnerabilities within their systems and networks, and while those organizations can address these issues, security audits themselves can reduce the potential for a breach, too.

Stay Compliant with Regulations

Most organizations must also consider compliance with industry standards and other regulatory guidelines. Some companies can rely on a security auditor team to assess and ensure compliance with these standards, but more and more organizations are turning to AI to fill this role. AI audits can help ensure that the organization never violates its legal obligations when used with a human team.

Proactively Address Emerging Threats

Security audits are crucial to predicting and protecting against potential threats. They are essential for adapting to new security threats as they are more developed daily. Regular security audits assist organizations in preventing issues, helping officials identify and fix vulnerabilities before criminals can take advantage of them.

Maintain Customer Trust

Regular security audits can also encourage client and consumer confidence. Data breaches are occurring more often than ever across industries and worldwide. By launching regular security audits, companies can prove to their stakeholders and consumers that they take security seriously and are prepared to squash all threats.

Areas Covered in Security Audit

Information Processing

During a security audit, part of the assessment reviews how information is processed and protected within a system and its databases. An information security audit evaluates an organization’s approach to collecting and parsing data and ensures the data it maintains is legal and adequately protected.

Telecommunication Controls

During a security audit, another vital avenue to inspect is the organization’s defenses for telecommunication networks and protocols. These assessments will likely become necessary as VOIP and AI voice cloning schemes appear more often in the consumer world.

Software System

Security audits are particularly interested in the defenses of software applications; they ensure that a company’s network, platform, portal, application, and other access points are secure. Audits review a software’s resiliency to attack, its potential vulnerabilities, and future potential issues to consider.


Data encryption methods are vital elements of a company’s data security defense. These techniques convert information into unintelligible code, ensuring that only those with the same encryption key can access the protected information. Companies must consider encrypting all data they collect and its transportation channels.

Systems Development Audit

A systems development life cycle refers to an organization’s network development processes. Security audits evaluate these processes, identifying which portions may be vulnerable to online threats. They also offer ideas or solutions for improving those older areas of the environment.

Network Vulnerabilities

Network security audits are one of the primary reasons for launching a security audit. These audits identify vulnerabilities within an organization’s infrastructure, such as the primary computer environment, open ports, outdated software, and potential vulnerabilities. Moreover, these audits assess and recommend options for exploitable network issues.


A security audit also assesses an organization’s architecture. These areas may include portal access points, data gate junctions, and “legacy” information network connections. Architecture assessments are vital to an organization’s security defenses, as vulnerabilities can lead to irreparable data breach incidents.

Security Controls

Security audits also assess the effectiveness of current security controls and the cyber hygiene of the organization’s networks. Security controls include physical and digital defenses for protecting an organization’s data, like surveillance cameras and firewalls. Moreover, audits will identify gaps in those securities and offer solutions to close them.

Differences Between Security Audits, Vulnerability Assessments, and Penetration Tests

Security audits identify vulnerabilities and potential risks within a system and comprehensively evaluate an organization’s security policies, procedures, and controls. They are usually non-invasive, but some companies use internal audits. At the end of the audit, the officials review policies and procedures and typically meet with personnel about potential changes. Security audits occur annually, when needed, or as necessary by regulation.

Differences Between Security Audits, Vulnerability Assessments, and Penetration Tests

Vulnerability assessments identify potential issues and prioritize them for fixing. They evaluate an organization’s systems, networks, and other potential vulnerabilities by scouring its systems, networks, and access gates. At the end of the assessment, officials compile a report that provides security recommendations. The company typically schedules vulnerability assessments, but some companies may have them required by regulators.

Penetration tests identify potential vulnerabilities and simulate an attack on them. These tests aim to understand how an organization’s system or network will respond to a cyberattack. Upon completion of the test, officials compile a detailed report of the results, offering suggestions for improvement and how to better face similar threats in the future. Some companies may hold these tests as needed by regulation, while others may test biannually or as needed. 

Security audits, with their vulnerability assessments and penetration testing, are a significant part of an organization’s cybersecurity, making them all necessary for every company with online connections. Moreover, regular security audits allow organizations to maintain a robust information security infrastructure, emphasizing data integrity and confidentiality. These audits are more than simulated tests—they inform officials how to respond and mitigate cyber assaults, which helps organizations keep consumer information safe while limiting losses.

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