Have you ever wondered how devices on your home network can connect to the vast world of the internet? Or how companies manage to conserve public IP addresses while still enabling communication between their internal networks and the outside world? The answer lies in a fundamental networking technology called Network Address Translation, or NAT. In … Read more
The Certified Information Systems Security Professional (CISSP) certification provides IT professionals with evidence of comprehensive knowledge in the area of IT security. The certification was developed by the Information Systems Security Certification Consortium (ISC)². To obtain the certification, theoretical knowledge and practical experience must be demonstrated. Cybersecurity plays a critical role in safeguarding sensitive information … Read more
With the help of a command-and-control server, botmasters control the infected computers of a botnet. Commands can be sent to individual or all computers, for example, to launch distributed denial of service (DDoS) attacks. Receiving data from the botnet computers and other activities are also possible. The number and structure of networking of C&C servers … Read more
In today’s digital landscape, network security plays a crucial role in safeguarding sensitive information and ensuring the smooth functioning of business operations. With the rise of cloud computing, organizations are increasingly adopting cloud platforms like Microsoft Azure to host their applications and data. One essential component of securing network traffic in Azure is the Network … Read more
Businesses face an ever-growing number of sophisticated cyber threats that can compromise their sensitive data, disrupt operations, and damage their reputation. To combat these threats, organizations require advanced security solutions that go beyond traditional approaches. One such solution gaining prominence is Extended Detection and Response (XDR). In this article, we will explore the concept of … Read more
In today’s interconnected digital world, the term “botnet” has gained notoriety as a formidable threat to online security. But what exactly is a botnet? In simple terms, a botnet refers to a network of compromised computers, also known as “bots” or “zombies,” controlled by a malicious actor, the botmaster. These networks can consist of thousands … Read more
Threats are everywhere in today’s world. From cyberattacks to natural disasters, organizations and individuals face a wide range of risks that can disrupt operations, cause financial loss, or harm people’s well-being. In order to effectively protect themselves, it is crucial to have a clear understanding of potential threats and develop strategies to mitigate them. This … Read more
Temporal Key Integrity Protocol (TKIP) is a security protocol for WLAN networks that was developed to provide an alternative for WEP, which is considered insecure, as quickly as possible. Like WEP, TKIP is based on the RC4 algorithm for encrypting data and has been considered insecure since 2009. Wireless networks have revolutionized the way we … Read more
WPA stands for Wi-Fi Protected Access and refers to the successor standard to WEP for encryption and authentication in WLANs that was adopted in 2003. WPA was intended to eliminate the known security gaps and vulnerabilities of WEP and provide security in wireless networks again. Like WEP, WPA is no longer considered sufficiently secure today … Read more
The guideline VdS 10000 contains specifications and offers concrete assistance for the implementation of an information security management system, especially for small and medium-sized enterprises (SMEs). It also describes concrete measures that can be used to secure the IT infrastructures of these companies in order to achieve an appropriate level of protection. VdS 10000 replaces … Read more
Remote Code Execution makes it possible to execute unwanted program code on a computer remotely. Often, security gaps in the operating system and in applications or poorly secured input options are the reason for this security problem. Attackers use the Internet to penetrate systems via remote code execution, execute malware or take over the systems … Read more
Access control is a crucial aspect of cybersecurity and refers to the practice of regulating who can access specific resources or information in a system or network. It is a security technique that restricts unauthorized access to sensitive data, devices, or resources. Access control is a vital aspect of modern-day cybersecurity. With cyber threats increasing, … Read more
Remote access is access from a local computer to remote computers, servers, networks, or other IT systems. Access can take place via private data networks or the Internet. Typical applications include working at a remote location or remote maintenance of computers and IT systems. Authenticated and encrypted connections are used to secure remote access. Remote … Read more
Unlike the open Internet, whose pages can be found via search engines such as Google, the Darknet or Deep Web is hidden from view. Here a network is created from and between all participants, classical servers do not exist. The internet has become a crucial part of our lives. It has revolutionized how we communicate, … Read more
According to Google’s own September 2019 transparency report, 94 percent of all HTTP connections are encrypted. DNS queries, however, still travel over the Ether in clear text, as if nothing has changed in the last 30 years. The implications for privacy and data security are undeniable. In today’s world, the internet has become an essential … Read more
A domain controller is a central instance of a network domain that manages and controls its objects as well as user rights and roles. It is a server that has been set up as a domain controller by the administrator. Users who want to log in and access objects in a domain contact the controller … Read more
Metasploit is an open-source project that provides, among other things, the Metasploit framework. It contains a collection of exploits that can be used to test the security of computer systems. Metasploit can also be misused as a tool for hackers. Metasploit is a powerful and versatile penetration testing framework that has become an essential tool … Read more
Network encryption operates on layer 2 or 3 of the OSI layer model. It ensures the confidentiality and integrity of transmitted data as well as the authenticity of communication partners and is transparent to higher-layer protocols or applications. In today’s digital age, communication over the internet is becoming increasingly prevalent. However, this ease of communication … Read more
The IEEE 802.1X standard operates at layer two of the OSI reference model and allows access control to cable-based or wireless local area networks (LANs and WLANs). It provides a secure authentication procedure and uses protocols and standards such as the Extensible Authentication Protocol (EAP) and RADIUS. In the WLAN environment, access control with this … Read more
As computer networks continue to expand in size and complexity, new technologies are being developed to help manage and optimize data communication. One such technology is a VLAN, or Virtual Local Area Network. VLANs allow devices to be grouped together into logical networks, even if they are physically located on different parts of a larger … Read more