Featured Linux Articles - Page 3
Need an in-depth introduction to a new security topic? Our features articles will bring up up-to-date on everything from buffer overflows to SE Linux policy development.
Need an in-depth introduction to a new security topic? Our features articles will bring up up-to-date on everything from buffer overflows to SE Linux policy development.
IaC, or infrastructure as code, is essential to most cloud-based applications. Implementing IaC has advantages that significantly increase the service's characteristics and efficiency. However, as well as its enormous value, IaC has certain security drawbacks, like the spreading of simple security issues on all the files or vulnerability to data exposure, which could greatly affect the security of an open-source environment.
At last count, W3Techs reported that 43.1% of all websites operating on the Internet today rely on the WordPress CMS. And of those, an overwhelming majority run on Linux servers. That immense popularity makes Linux servers running WordPress a prime target of hackers and other bad actors. As a result, such servers face an estimated 90,000 attacks every minute, every day.
In this paper, we describe and analyze a network-based DoS attack for IP-based networks. It is known as SYN flooding. It works by an attacker sending many TCP connection requests with spoofed source addresses to a victim's machine. Each request causes the targeted host to instantiate data structures out of a limited pool of resources to deny further legitimate access.
There are several general categories of DoS attacks. Some groups divide attacks into three classes: bandwidth attacks, protocol attacks, and logic attacks. Following are brief descriptions of some common types of DoS attacks.
When a normal TCP connection starts, a destination host receives a SYN (synchronize/start) packet from a source host and sends back a SYN ACK (synchronize acknowledge). The destination host must then hear an ACK (acknowledge) of the SYN ACK before the connection is established. This is referred to as the "TCP three-way handshake."
Service Providers are scrambling to offer voice, video, data, and innovative services, such as gaming, interactive TV, and messaging, on a single pipe. At the same time, network equipment is being upgraded to IPV6. But some Real-Time IPV6 Security overwhelms performance due to the application intelligence, which is the rapid inspection of VoIP signaling SIP, H.323 and audio packets, and the prompt opening and shutting of "pinholes" to allow the passage of valid voice traffic over wireless networks.
In this paper, we describe and analyze a network-based DoS attack for IP-based networks. It is known as SYN flooding. It works by an attacker sending many TCP connection re¬quests with spoofed source addresses to a victim's machine. Each request causes the targeted host to instantiate data structures out of a limited pool of resources to deny further legitimate access. Part I Part II Part III Part IV
It was discovered that a sequence of processor instructions for some Intel processors leads to unexpected behavior that could allow an authenticated local user to escalate privileges (CVE-2023-23583). This bug, dubbed "Reptar," could expose sensitive information or cause system crashes, resulting in denial of service attacks leading to loss of system access.
Two critical vulnerabilities were recently discovered in the Linux kernel, which both received a National Vulnerability Database base score of 9.8 out of 10 due to how simple they are for attackers to exploit and their severe threat to impacted systems.
In the dynamic landscape of contemporary software development, Docker containerization has emerged as a cornerstone, facilitating the efficient deployment and scaling of applications. However, fortifying their security measures becomes paramount as organizations increasingly embrace Docker containers.
Simple passwords can be incredibly weak, whether they match the username, are a blank password, or use keyboard combinations ("qwerty"). These types of passwords may be more accessible to remember, but they do not combat cybercriminals interested in stealing your information and threatening your data and network security.
Data governance consultancy is a compliance tool many businesses have started relying on due to the constantly changing data management environment. These tactics help businesses develop strategies and policies to ensure data and network security, privacy-enhancing technology, and integrity. Open-source security on Linux plays a crucial role in creating cloud security frameworks that provide the protection that every Linux user needs and deserves.
Passwords are becoming a concept of the past as passkeys have moved to the forefront. When users create a passkey on their device, they must select the correct key to log into the services and websites they need.
Managed Service Providers (MSP) prioritize Linux device management in their core operation. Organizations have started to rely heavily on their Linux systems, so administering these devices appropriately is essential within an MSP. It must deliver efficient Linux device management that aligns with the client’s needs.
Peer-to-peer (P2P) torrenting users risk downloading malware, accessing unauthorized content, and having their computers infected with viruses, which could limit their online connection and lead to severe repercussions.
About half of all small businesses use cloud-based hosting and infrastructure. Small- and Medium-Sized Businesses (SMBs) work with cloud security frameworks since the enterprise-grade technology is affordable and easy to use. However, there are still significant risks that users must consider when utilizing these services.
Cybercriminals implement scanning into their attacks to find network machines with open ports that they can utilize to bypass security and harm businesses and employees. Before launching an attack, threat actors run cloud security scanners like Linux Nmap that can sweep servers and find cybersecurity vulnerabilities to exploit. Once they identify a target, an intruder can use TCP stack fingerprinting to determine the type of machine they are breaching.
The GNU C Library on Linux systems can be compared to the control tower at a busy airport; while the tower is essential to overseeing everything at the airport, if a criminal were to enter, they could hijack a plane and put many people at risk. Threat actors have been utilizing a severe vulnerability dubbed "Looney Tunables" (CVE-2023-4911) to infiltrate GNU C Libraries (glibc), stunting functions like network and memory access, file I/O, and more.
Network security threats have grown alarmingly sophisticated, and IT professionals struggle to stay on top of the most recent computer security news about how to keep digital assets safe. Organizations need to build cloud security frameworks that are dynamic and adaptable, just like the risks they could encounter. Linux is an open-source, transparent option that users can implement to provide the ultimate security for their servers.
Data and network security is critical for businesses to run smoothly while maintaining customer trust. When users utilize e-commerce websites to purchase products, sign up for services, provide experience feedback, and more, they input information companies would not typically access. Fortunately, internet users are acting more responsibly by only inputting information for businesses whose employees they trust not to exploit the data.