Network Security
Network security is the use of hardware, software, and security processes to protect multiple layers of the OSI model, particularly Layer 3 (the network layer) and Layer 4 (the transport layer). Network security creates a secure perimeter around sensitive assets, preventing access by unauthorized users. The main goal of network security measures is to prevent unauthorized parties from penetrating the network, and to immediately identify and block malicious access attempts.
Endpoint security is the practice of securing endpoint devices such as employee workstations, on-premise servers, cloud servers, or mobile devices. Endpoint security tools have several goals:
- Protecting endpoint devices from basic threats like file-based malware.
- Protecting endpoint devices from advanced threats like zero-day attacks, fileless malware, or malware using evasion and obfuscation tactics.
- Detecting breaches on endpoints and giving security teams the tools they need to investigate incidents and respond to them, both manually and automatically.
Application Security
Application security is a set of tools and practices that can help defend applications from cyberattacks—this includes protecting the application, the host running it, the code, sensitive data stored by the application, integrated systems, and end users.
Application security starts at the development stage, and ideally is tightly integrated with application development processes (an approach known as DevSecOps). Application security continues in testing stages, when applications should be thoroughly tested to prevent security issues making their way to production.
Finally, there are specialized tools and techniques used to test and secure applications in production. These tools could be external to the application, as in the case of a web application firewall (WAF), or built into the application, such as an embedded intrusion prevention system (IPS).
Related product offering: Radware Cloud Application Protection Services
API Security
Application programming interface (API) security involves the prevention of malicious attacks on APIs. APIs are a critical asset for many organizations because mission-critical processes depend on APIs, and APIs commonly provide access to sensitive data and operations. At the same time, APIs were until recently not designed with security in mind, making them a primary target for attackers.
Key security risks in API systems include man-in-the-middle (MitM) attacks, authentication flaws, and identity attacks. API security measures include the use of API gateways, enforcement of strong authentication, and standardized definitions of API actions, such as the OpenAPI specification, which makes it possible to perform systematic testing of API operations.
Learn more in the detailed guide to API security.
Related product offering: Radware API Abuse Prevention
Cloud Security
Cloud security is the practice of protecting public and private cloud environments, their infrastructure, and the applications running within them. Cloud environments are increasingly used to run mission-critical applications and host sensitive data. At the same time, the cloud is a highly dynamic environment which is difficult to monitor and protect, and is incompatible with many traditional security tools.
Public cloud providers like Amazon, Microsoft, and Google provide extensive security tools as part of their cloud platforms. However, in many cases these tools are not enough to fully secure an organization and its workloads in the cloud. This led to the development of several categories of cloud-specific security tools, including:
- Cloud Workload Protection Platform (CWPP): Protects cloud workloads like VMs, containers, and serverless functions.
- Cloud Security Posture Management (CSPM): Detects misconfigurations in cloud environments and violations of compliance requirements, and helps remediate them.
- SaaS Security Posture Management (SSPM): Detects misconfiguration and vulnerabilities in SaaS applications and helps remediate them.
- Cloud Access Security Broker (CASB): Deployed within cloud resources and provides services like firewalls, application layer security, and data loss prevention (DLP).
Browser Security
Browser security focuses on defending web browsers from threats that originate during web browsing activities. Since browsers are the primary interface for accessing web applications and online services, they are common targets for attackers. Common threats include drive-by downloads, phishing attacks, malicious browser extensions, and cross-site scripting (XSS) exploits.
Security measures in this area include browser isolation, which runs browser sessions in a secure environment (such as a virtual container or sandbox), and secure web gateways that filter traffic and block access to malicious or suspicious websites. Endpoint protection tools may also include browser protection features to block dangerous scripts or prevent unauthorized access to browser-stored credentials.
Browser security plays a key role in preventing malware infections, credential theft, and other attacks that start with user interaction on the web.
Learn more in the detailed guide to browser security.
IoT Security
The Internet of things (IoT) adds Internet connectivity to computing devices, machinery, everyday objects, animals, or people (via wearable devices). Many organizations rely on the IoT for business critical operations, and some IoT devices contain sensitive data, which creates a new attack surface.
Multiple high-profile security breaches were related to security vulnerabilities of IoT devices. Attackers are realizing the high value of IoT devices, and at the same time, many IoT devices were not designed with security in mind. In many cases, IoT devices are not authenticated or have trivial security measures. Attackers can use them to breach enterprise systems, and can also herd IoT devices into massive botnets and abuse them for criminal activity.
IoT security solutions enable organizations to gain visibility over their IoT devices, understand their security weaknesses, and either remediate them on the device, or create defensive measures that can prevent attackers from abusing IoT systems.
Learn more in the detailed guides to IoT Networking.
Cellular Core Networks and Communication Infrastructure
Cellular core networks and communication infrastructure are critical components of modern connectivity, enabling mobile communication, data transfer, and Internet access. These systems include the mobile core, radio access networks (RAN), and supporting transport layers that carry data between devices and the cloud. Because they handle massive volumes of sensitive data including voice, SMS, and user location, any compromise of this infrastructure can lead to severe privacy breaches, service disruption, or national security concerns.
The cybersecurity challenges in this area include threats such as signaling storms, denial-of-service (DoS) attacks on base stations, IMSI catchers (rogue base stations), protocol vulnerabilities (e.g., SS7, Diameter), and exploitation of 5G network slicing.
Security solutions must address both legacy infrastructure and modern 5G architectures. This involves implementing strong access controls, securing signaling protocols, enforcing network segmentation, and using AI-driven analytics to detect anomalies in real time. Telecom operators also need to comply with regulatory frameworks like the GSMA’s NESAS and 3GPP standards to ensure resilience and trust in mobile network infrastructure.
Learn more in the detailed guides to:
Container and Kubernetes Security
Kubernetes is an open-source platform used to manage containers at scale. Kubernetes clusters have become a foundation of modern enterprise data centers. While Kubernetes provides robust security functionality, it is not secure by default. The risks of improperly secured Kubernetes clusters are becoming a top priority for cybersecurity teams.
Kubernetes risks align closely to steps in the container lifecycle. Security best practices involve:
- Securing containers during the build phase
- Scanning container images for vulnerabilities and misconfigurations
- Monitoring containers at runtime to detect security weaknesses and attacks
Containerized environments are highly dynamic and complex, and traditional security tools often cannot operate within a Kubernetes cluster. This led to the development of cloud-native security solutions, which can be deployed alongside containers in a Kubernetes cluster, to provide visibility over workloads, identify vulnerabilities and remediate them.
Learn more in the detailed guides to:
Serverless Security
Serverless computing is a new computing model in which cloud providers take full ownership of server infrastructure, automatically managing and allocating resources. Customers need only write simple units of code (known as serverless functions) which they can run at any scale on serverless infrastructure. The most popular serverless runtime platforms are AWS Lambda, Google Cloud Functions, and Azure Functions.
Serverless security is very different from traditional application security, because the organization has no access to the underlying server infrastructure. Instead of using traditional solutions like next generation firewalls (NGFW), organizations must build security directly into their serverless applications. There are specific techniques and best practices for hardening serverless functions and defining least-privilege access, so that each function does only what it is designed to do, thus limiting the impact of compromised functions.
Critical Infrastructure Security
Critical infrastructure involves parts of a country’s economy that are essential for its survival. The US Department of Homeland Security identified 16 critical infrastructure sectors including energy, transportation, food and agriculture, and financial services.
The increasing use of IoT, connectivity to public networks, and machine to machine (M2M) communication, exposes critical infrastructure to new threats. Today, critical infrastructure is exposed to regular cyberthreats and organized cyberattacks waged by hostile nations or terrorist groups.
Critical infrastructure security involves protecting critical infrastructure and ensuring its continuous operation. A major challenge is that critical systems often cannot be updated or modified because this can interfere with ongoing operations. Critical infrastructure security solutions overcome this challenge by a variety of techniques such as network segmentation and zero trust access.
Learn more in the detailed guide to cyberinsurance.
Operation System Security
Operating system security involves protecting the core software that manages a computer’s hardware and software resources. Since the operating system controls application execution and user access, it is a primary target for attackers seeking to exploit vulnerabilities, escalate privileges, or gain unauthorized access to data. Here are the key measures used to defend common operating systems:
Windows Security
Windows is widely used in enterprise and consumer environments, making it a frequent target for cyberthreats. Key security measures include:
- Windows Defender & EDR: Built-in antivirus and endpoint detection and response (EDR) solutions for malware prevention.
- Group policy & Active Directory (AD): Enforces security policies and access controls across enterprise networks.
- BitLocker: Provides full-disk encryption to protect sensitive data.
- Patch management (Windows update): Ensures vulnerabilities are patched to prevent exploitation.
Mac Security
Mac systems are known for their strong security model but are still vulnerable to threats. Key protections include:
- XProtect & Gatekeeper: Built-in antivirus and application security to block untrusted software.
- System Integrity Protection (SIP): Prevents unauthorized modifications to system files.
- FileVault: Encrypts the entire disk to protect user data.
- TCC (Transparency, Consent, and Control): Manages app permissions to access sensitive data from devices like cameras and microphones.
Regardless of the operating system, security measures should include patch management, access controls, endpoint hardening, and proactive monitoring to prevent and detect attacks. Operating system security is critical for protecting personal devices, corporate endpoints, and cloud-based workloads from modern cyberthreats.
Linux Security
Linux is common in server environments, cloud computing, and cybersecurity tools. Security best practices include:
- SELinux & AppArmor: Mandatory access control frameworks that restrict processes to predefined security policies.
- IPTables & firewalls: Built-in firewall tools to filter network traffic.
- Package management security: Ensures software updates come from trusted repositories to prevent supply chain attacks.
- Root user restrictions: Uses sudo and least-privilege principles to limit administrative access.
Regardless of the operating system, security measures should include patch management, access controls, endpoint hardening, and proactive monitoring to prevent and detect attacks. Operating system security is critical for protecting personal devices, corporate endpoints, and cloud-based workloads from modern cyberthreats.