Threats, Vulnerabilities, and Risks

Cyber security is all about understanding the risk that a cyber incident may represent to your organisation and it’s about understanding the level of risk you are willing to accept before taking mitigating steps. This is known as your risk appetite. With the ever-evolving landscape of threats and vulnerabilities that make up these risks, it’s vital for businesses and individuals to stay informed and vigilant. In this blog post, we’ll explore the key concepts of cyber security, the different types of threat actors, and the importance of understanding and managing risk to ensure the protection of your sensitive information and assets.

Cybersecurity Threats: Events, Not People or Things

When discussing cyber security, we should remember that threats are any events that could compromise the ability of a computer system, service, or network. These threats may not always be obvious, and it’s important to think of them as actual events rather than people or things. The individuals or groups behind these threats are known as threat actors, and they are typically the origin or creators of such threats.

Categories of Threats: Natural, Unintentional, and Intentional

Threats can be divided into three main categories:

• Natural threats, such as floods, hurricanes, or lightning, are acts of nature that are unpredictable in terms of when they occur and the impact they may have.
• Unintentional threats often result from human error and can be physical (e.g., leaving a server room door unlocked) or digital (e.g., not updating software or using weak passwords).
• Intentional threats are deliberate actions taken by individuals to compromise data security by gaining unauthorised access.

Protecting Confidentiality, Integrity, and Availability

Sensitive and private information must be safeguarded from unauthorised access. This involves ensuring confidentiality, data integrity, and availability, collectively known as the CIA Triad.

Confidentiality depends on defining and enforcing access levels for information, which may involve separating information into various collections based on access needs and sensitivity. Common methods to manage confidentiality include access control lists, volume and file encryption, and Unix file permissions.

Data integrity, represented by the “I” in the CIA Triad, is designed to protect data from unauthorised deletion or modification. It ensures that when an authorised person makes a change accidentally, the damage can be reversed.

Availability, the final component of the CIA Triad, refers to the accessibility of data. A system’s controls must work properly to protect information and ensure it’s available when needed.

Identifying Threat Actors

Threat actors are hackers who pose a risk to an organisation’s assets. They vary in skill and motivation and can be classified into categories such as script kiddies, criminals, competitors, advanced persistent threats (APTs), hacktivists, terrorists, and insiders. Understanding the unique characteristics, motivations, and potential impacts of each category is crucial in identifying and addressing threats. More information can be found about their motivations in our cyber awareness course for beginners, Sencode Learning at academy.sencode.co.uk

Assessing Threat Sources and Vulnerabilities

A security vulnerability is a flaw in an IT system, application, policy, or procedure that leaves an organisation open to a cyberattack. Vulnerabilities can be physical or electronic, such as a software flaw or a weak point in the operating software. Knowing the factors that impact vulnerability will help you better understand your cybersecurity posture, which represents the overall state and strength of your cyber security efforts.

Understanding Risk and Its Calculation

Risk is the potential harm or loss related to technical infrastructure or technology use within an organisation. To calculate risk, three variables must be considered: annual rate of occurrence (ARO), single loss expectancy (SLE), and annual loss expectancy. By understanding the relationships between threats, vulnerabilities, and risks, organisations can better assess and manage their cyber security efforts.

By multiplying the ARO and SLE, you get the Annual Loss Expectancy (ALE), which represents the expected financial loss due to the specific risk over the course of a year. This value helps organisations determine the appropriate measures to mitigate risk and allocate resources accordingly.

Sencode believes that the best hope for mitigating common cyber threats to organisations and improving the security posture of businesses in the UK is only going to happen through the right kind of specialist training, tailor-made for each of our clients who are looking to mitigate risk.

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*** This is a Security Bloggers Network syndicated blog from Blog - Penetration Testing UK - Sencode authored by SencodeTeam. Read the original post at: https://sencode.co.uk/threats-vulnerabilities-and-risks/