Network Security
system security Linux network
system security Linux network The romanticized image of the digital nomad – a laptop on a sun-drenched balcony – rarely accounts for the actual friction of maintaining a professional development environment on the move. . The friction is amplified with Linux. We are looking for a setup that respects our kernel configurations, handles volatile network handovers, and maintains a strict security posture without the hand-holding of a consumer-grade OS – so, put simply, more than just a laptop and a sunny deck. The hardware is...
May 26, 2026
Server Securityopen-source Linux administration
open-source Linux administration Cron has existed in Unix and Linux environments for decades, handling backups, cleanup scripts, patching jobs, log rotation, monitoring tasks, and other maintenance work that administrators do not want to run manually. Most Linux servers rely on it constantly, which is exactly why attackers continue abusing it for persistence after a system has already been compromised. . Persistence through cron is not complicated. Attackers do not need a rootkit or advanced malware framework to maintain...
May 25, 2026
Vendors/Productssecurity breach linux
security breach linux A major internal repository breach at GitHub has exposed a critical and overlooked blind spot in Linux supply chain security. Kernel exploits, exposed SSH services, weak firewall rules, and vulnerable daemons dominated the Linux threat model for years, and in many environments, they still matter. But recent supply-chain incidents involving GitHub ecosystems, npm packages, and malicious developer tooling point somewhere else entirely: the developer workstation. . The breach matters because...
May 21, 2026
Security Trends access control multi-tenant
access control multi-tenant Linux administrators often face an ugly choice in the cloud: prioritize convenience and cost-efficiency by sharing infrastructure, or sacrifice those benefits for the sake of total isolation. Most modern Linux workloads don't live on their own private servers anymore. They live in shared environments like Kubernetes clusters, where multiple teams and services run side-by-side. It sounds efficient, and it usually is. . But cloud isolation isn't as ironclad as it looks on the diagram. If you...
May 21, 2026
Vendors/Productsincident response cloud security
incident response cloud security Managed Extended Detection and Response (MXDR) has become one of the most sought-after security services in the enterprise market — and with good reason. It promises the holy grail: broad visibility across endpoints, network, cloud, email, and identity, combined with the 24/7 human expertise most organizations simply cannot build in-house. . However, the rapid growth of the market has produced a wide range of providers whose capabilities vary considerably beneath the surface. Choosing the...
May 19, 2026
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steganographydata concealmentcovert channelTargeted Fragmentation: Covert Channels Using Hard Drives
A team of researchers has presented a steganographic technique which can be used to conceal data on a hard drive. The technique is essentially based on targeted fragmentation of clusters when saving a file in the FAT file system. . When decoded, the distance between clusters reveals the binary sequence of the hidden data. Two (numerically) sequential clusters, for example, mean that the following bit is equal to the previous one. If the distance to the next cluster is greater, this means that the next bit is not equal to the previous bit. In this way, a series of clusters making up a saved file yields a defined bit stream. If the reader knows the state of the starting bit, he is able to obtain the correct bit stream. The link for this article located at H Security is no longer available. . When decoded, the distance between clusters reveals the binary sequence of the hidden data. Two (num. researchers, presented, steganographic, technique, which, conceal. . LinuxSecurity.com Team
Apr 26, 2011
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Hacks/Cracks
67
steganographydata concealmentdigital securityDiscover Steganography Tools For Hidden Data Protection
Remember those invisible ink kits from when you were a kid? You'd write a secret message that no one could see unless they had a black light or the decoder marker. The digital equivalent of invisible ink is steganography software, apps that embed files and data inside other files, hidden from everyone who doesn't know any better. You don't have to be a trained spy plotting international espionage to put steganography to good use. With some free tools for both the Mac and PC, you can embed secret information in image, PDF, HTML and MP3 files for fun or profit. . Unlike encryption, which obscures data in such a way that it's obvious someone's keeping something from listeners-in (and therefore heightens interest in that info), stego techniques offer no hint to the outsider that there's any private data contained within the visible file. Like hiding your valuables from burglars in an empty cereal box in your kitchen cabinet, steganography keeps the existence of the secret item from everyone but those in the know. The link for this article located at Life Hacker is no longer available. . Investigate software solutions for steganography that conceal information within various file types, promoting digital safety and maintaining a low profile.. Steganography tools, Data hiding techniques, Digital privacy software, File manipulation methods. . LinuxSecurity.com Team
Jan 26, 2007
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Cryptography
67
information securitysteganographythreat awarenessExploring Steganography Risks in Information Technology Security
Steganography is a subject which is rarely touched upon by most IT Security Enthusiasts. Most people don't see Steganography has a potential threat, some people don't even know what Steganography is. With this FAQ I hope to answer any questions anyone may want to ask about Steganography, and to educate people so they can understand what exactly Steganography is. Is Steganography a potential threat? Well your about to find out. . The link for this article located at InfoSecWriters is no longer available. . The link for this article located at InfoSecWriters is no longer available. . steganography, subject, which, rarely, touched, security, enthusiasts, people. . LinuxSecurity.com Team
Mar 29, 2006
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Cryptography
67
digital forensicsinformation securitysteganographyExploring Steganography's Historical Roots and Its Security Impact
Over the past couple of years, steganography has been the source of a lot of discussion, particularly as it was suspected that terrorists connected with the September 11 attacks might have used it for covert communications. While no such connection has . . . . Over the past couple of years, steganography has been the source of a lot of discussion, particularly as it was suspected that terrorists connected with the September 11 attacks might have used it for covert communications. While no such connection has been proven, the concern points out the effectiveness of steganography as a means of obscuring data. Indeed, along with encryption, steganography is one of the fundamental ways by which data can be kept confidential. This article will offer a brief introductory discussion of steganography: what it is, how it can be used, and the true implications it can have on information security. While we are discussing it in terms of computer security, steganography is really nothing new, as it has been around since the times of ancient Rome. For example, in ancient Rome and Greece, text was traditionally written on wax that was poured on top of stone tablets. If the sender of the information wanted to obscure the message - for purposes of military intelligence, for instance - they would use steganography: the wax would be scraped off and the message would be inscribed or written directly on the tablet, wax would then be poured on top of the message, thereby obscuring not just its meaning but its very existence[1]. According to Dictionary.com, steganography (also known as "steg" or "stego") is "the art of writing in cipher, or in characters, which are not intelligible except to persons who have the key; cryptography" [2]. In computer terms, steganography has evolved into the practice of hiding a message within a larger one in such a way that others cannot discern the presence or contents of the hidden message[3]. In contemporary terms, steganography has evolved into a digital strategy of hiding a file in some form ofmultimedia, such as an image, an audio file (like a .wav or mp3) or even a video file. The link for this article located at SecurityFocus is no longer available. . Over the past couple of years, steganography has been the source of a lot of discussion, particularl. couple, years, steganography, source, discussion, particularl. . LinuxSecurity.com Team
Apr 10, 2003
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Cryptography
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