IT Security Roles: CISO, CIO, and Digital Forensics

Introduction to IT Security Roles

The roles that information security personnel play are vital within an organization. Three key roles — the Chief Information Security Officer (CISO), the Chief Information Officer (CIO), and the digital forensics professional — are central to any organization seeking to secure its information systems and data. Each role carries distinct responsibilities and functions that together form a comprehensive approach to cybersecurity. The information technology security roles discussed in this paper serve to optimize and protect the organization's data assets. Digital forensics, in particular, complements the security efforts of the organization and provides a means of guaranteeing the integrity of collected evidence.

The Chief Information Security Officer (CISO)

The Chief Information Security Officer (CISO) is responsible for establishing and maintaining the organization's vision, strategy, and program in order to ensure that information assets and technologies are adequately protected. The CISO is responsible for ensuring that the organization complies with both internal and external policies (Goodyear, Goerdel, Portillo, & Williams, 2010). This includes analyzing how information security affects the legal requirements of the organization. For example, the CISO is required to ensure that the organization is in compliance with PCI or HIPAA laws, and they must also write and adjust organizational policies based on new compliance requirements and regulations.

The CISO is charged with anticipating new threats and actively works to prevent those threats from affecting the organization. Rather than waiting for a security incident or data breach to occur, the CISO proactively runs vulnerability scans, web application security assessments, and penetration tests to verify the security of the organization's systems and reduce the likelihood of unauthorized access or attack. In carrying out this role, the CISO verifies that hardware and software configurations — both within the organization and among its vendors — are in compliance with regulatory and organizational standards.

A CISO also serves as the link between different departments and all third parties with respect to cybersecurity. The CISO not only manages the information security team but also coordinates with various departments on security matters (Conklin & McLeod, 2009). For this reason, the CISO must maintain strong relationships and high visibility with vendors and internal departments at all times. In order to reduce operational risks in the event of a security attack, the CISO must work closely with executives across departments to ensure that security systems are functioning smoothly.

Key competencies that a CISO performs include security risk management, data security, and systems and application security. Security risk management is the continuous process of analyzing organizational systems to identify security risks and implement strategies to address them. Risks are determined by considering the likelihood of known threats exploiting vulnerabilities and the potential impact on the organization's valuable assets. Once risks and vulnerabilities have been identified, it is essential to implement strategies that seal those vulnerabilities and mitigate risks before they materialize (Goodyear et al., 2010).

Data security refers to protecting digital data from destructive forces and unwanted actions such as cyberattacks or data breaches. It is a vital aspect of information technology for any organization, ensuring that there is no unauthorized access to computers, websites, or databases. Preventing data corruption is also an element of data security. Technologies that can be employed include backups, encryption, data masking, and data erasure. Data security is most commonly enforced by requiring authentication from users who access and use the data.

Systems and application security refers to the use of hardware, software, and procedural methods to protect organizational applications from external threats. This entails ensuring that applications and systems have security measures built into them in order to minimize the risk of unauthorized code execution or system access. The CISO works closely with vendors to verify that the systems and applications being deployed comply with the organization's security policies. Common countermeasures include firewalls, anti-virus programs, biometric authentication systems, and spyware detection and removal programs.

The Chief Information Officer (CIO)

The Chief Information Officer (CIO) is responsible for planning and implementing the information technology strategy that meets the organization's business needs. The CIO is also responsible for the strategic management and use of information, information technology, and information systems. The CIO works with other members of the executive team to identify how information technology can help the organization achieve its business and financial goals (Lee & Shin, 2015). For example, technology can be used to streamline business processes, improve customer service quality, and increase employee productivity. The CIO develops strategies to achieve these goals and recommends investments that can deliver measurable results, such as a 3 percent reduction in order-processing costs or a 4 percent improvement in employee productivity.

Another function of the CIO is resource utilization. The CIO ensures that available network infrastructure and information technology support the organization's computing, communication, and data processing needs. If greater capacity is required, the CIO is responsible for identifying solutions that meet those needs at the lowest cost possible. The CIO must also analyze the need for additional capacity against the risk of having resources that remain underutilized (National Cyber Security Division, 2007).

The CIO should be able to recognize and respond to changing requirements and demand for IT security within the organization. This is accomplished by evaluating new and emerging IT security technologies to identify those best suited to the organization. For example, the growing need for collaboration has led to widespread deployment of wireless networking infrastructure. The CIO must analyze the impact of such developments on the organization's IT security and develop the necessary policies to prevent data breaches or other security risks. IT policy implementation is another core function of the CIO (Lee & Shin, 2015). Once policies have been developed and approved, the CIO is responsible for ensuring they are properly and fully implemented so that the organization operates in compliance with applicable laws and corporate policies. The CIO also evaluates policy effectiveness — for example, assessing whether a policy prohibiting employees from using personal devices to access organizational systems is working as intended, and determining whether additional security measures are needed.

The Digital Forensics Professional

Digital forensics is the collection, processing, analysis, preservation, and presentation of computer-related evidence. The evidence may include, but is not limited to, data retrieval, password cracking, and locating hidden information. Digital forensics applies knowledge of information systems together with legal knowledge to analyze digital evidence acquired, processed, and stored in a legally acceptable manner (Garfinkel, 2010). It is primarily used for investigations after an incident has occurred or when there is suspicion of a breach of organizational policies. Digital forensics tools can also be used to recover lost files, helping organizations avoid significant losses caused by corrupted storage media.

Digital forensics complements the overall security functions of the organization by providing a method for uncovering how an incident was made possible. With this knowledge, an organization can implement better security policies and strategies designed to close identified loopholes or vulnerabilities. Digital forensics also enables the organization to use collected evidence to defend itself against employees who may have committed fraud or gathered information illegally. This helps the organization maintain its reputation by demonstrating its ability to protect sensitive information.

It is essential that organizations ensure employees are not misusing information or information systems. Using digital forensics, organizations can conduct investigations and monitor employee activity to verify that information systems are not being misused. Conducting digital forensics on a regular basis can also reveal whether external attempts to access the organization's systems have occurred, whether those attempts were successful, and how much information may have been accessed. This information directly complements the organization's security posture by enabling it to seal vulnerabilities as soon as they are uncovered (Garfinkel, 2010).