Tudor Barbu

Cybersecurity is “the art of protecting networks, devices, and data from unauthorized access or criminal use.”

Cybersecurity has become especially relevant, with attacks increasing in both frequency and severity. In Q2 2024, Check Point Research saw a 30% year-over-year increase in global cyberattacks, with organizations experiencing an average of 1,636 attacks per week. Overall, 2023 saw a 72% increase in data compromises compared to 2021, which held the previous record. Recent estimates also expect the global annual cost of damages resulting from cybercrime to reach $10.5 trillion in 2025.

Types of Cybersecurity

As the non-profit trade association CompTIA explains, the meaning of cybersecurity varies depending on the specific area of technology being discussed. Generally, this field includes the following categories:

Network Security

Network security safeguards an organization’s network infrastructure with firewalls, antivirus software, access control policies, and other specialized defenses. It has three goals:

• Prevent unauthorized access to network resources
• Identify and stop ongoing security breaches
• Confirm that authorized users have secure access to the network resources they need

Network security operates on two levels. The first is the perimeter, where security measures focus on stopping threats from entering the network. But as these tactics sometimes fail, cybersecurity professionals also focus on resources inside the network. That way, even if cybercriminals gain unauthorized access, there are stopgaps in place to limit the damage.

Endpoint Security

Endpoint security is considered an organization’s primary defense against cybersecurity threats. It protects users and the devices they use to access the business network, such as desktops, laptops, mobile devices, servers, and more.

Endpoints are the top entry point hackers use to infiltrate enterprise networks, accounting for up to 90% of successful attacks and 70% of successful data breaches. There are many tools and technologies organizations use to fight these threats, including:

• Antivirus software
• Endpoint protection platforms
• Endpoint detection and response systems

Cloud Security

As CompTIA states, cloud security involves cybersecurity measures that help protect against attacks on cloud applications and infrastructure. The term cloud refers to the process of gaining access to computing resources over the internet, outside of the protective barriers of local hardware.

This approach allows organizations to scale operations and hand over the responsibility of managing some of these resources to a third-party provider. However, businesses are still responsible for protecting the sensitive data and applications they entrust to the cloud.

Application Security

Application security involves identifying and addressing potential vulnerabilities in software applications at all stages of their lifecycle. From development to deployment and beyond, engineers and cybersecurity professionals look for bugs that could give rise to unauthorized access, misuse, or modification.

Of the many application security measures, a few notable examples include:

• Application firewalls
• Code reviews
• Strong authentication mechanisms
• Encryption techniques
• Penetration testing

Information Security

Information security is “the protection of important information against unauthorized access, disclosure, use, alteration, or disruption.” It ensures sensitive data is accessible and kept confidential.

Notably, data security is a related but different term. As a subset of information security, it specifically refers to protecting digital information, whereas the umbrella term encompasses an organization’s holistic efforts to protect all types of information.

Mobile Security

This type of cybersecurity focuses on protecting mobile devices, such as laptops, tablets, and smartphones. Mobile security has become especially relevant now that such devices are more affordable, portable, and preferable to businesses and consumers.

As internet-enabled endpoints, they give users access to network resources at any time and place. In turn, organizations may implement several cybersecurity measures, including:

• Enterprise mobility management: A collection of tools that help manage how mobile devices are used within the business.
• Email security: Platforms that monitor email traffic to protect mobile devices from malicious software, phishing attacks, and more.
• Virtual private networks: Encrypted intranets that extend security over a public network, allowing businesses to establish a secure connection with mobile devices.

Internet of Things (IoT) Security

The Internet of Things (IoT) is “a network of physical devices, vehicles, appliances, and other physical objects that are embedded with sensors, software, and network connectivity.” These modifications enable them to collect and share data. Such smart objects can include thermostats, wearables, industrial machinery, and more.

IoT security is about protecting these devices from unauthorized access and manipulation. Many are vulnerable to hacking and other threat vectors, which can compromise the privacy of sensitive data. Moreover, IoT devices generate enormous amounts of data, potentially overwhelming businesses if they’re unprepared to handle it.

Critical Infrastructure Security

In this context, critical infrastructure refers to the essential components an organization needs to remain operational. It focuses on protecting these important systems from cybersecurity threats to ensure business continuity and cyber resilience.

Zero Trust Security

Zero trust is a modern cybersecurity approach for multi-cloud environments. It differs from the traditional network perimeter approach by prioritizing cybersecurity measures for every connection between users, devices, applications, and more.

It advocates a “never trust, always verify” principle. That means it requires strong authentication for all users inside a network rather than granting implicit trust. As IBM explains, this model is important because traditional strategies are no longer sufficient for the complex and distributed networks most organizations use today.

In the past, users and devices inside the network were considered trustworthy and granted free access to internal resources. Now that cloud computing pushes them off premises, organizations are more vulnerable to attack. Thus, every connection request must be considered a potential threat and verified continuously