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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67
steganographydigital securityespionageFBI Arrests 11 Russian Spies Using Steganography for Secret Messaging
In a case that smacks of a Cold War spy novel, the FBI has arrested 11 suspected Russian spies who for years had blended into day-to-day American life in the suburbs and cities. Aside from hiding their true identities and posing as legitimate American citizens, the suspects also masked their communications with their intelligence agency back home in Moscow, using an oft-forgotten form of stealth communication -- steganography.. According to U.S. Department of Justice legal filings, the defendants used a steganography tool, one that is not available commercially, to conceal their electronic communiques with Russian officials in the so-called SVR, a Russian Federation foreign intelligence body. Steganography hides text or images within image files or other innocuous-looking files. The alleged spies used steganography to hide messages within digital images on websites: "The software package permits the SVR clandestinely to insert encrypted data into images that are located on publicly-available websites without the data being visible," according to one of the DoJ's legal filings. "The encrypted data can be removed from the image, and then decrypted, using SVR-provided software. Similarly, SVR-provided software can be used to encrypt data, and then clandestinely to embed the data in images on publicly-available websites." FBI agents discovered the steganography software during their forensics investigations of computer disks they recovered in the Boston, Seattle, and New Jersey residences where some of the suspects lived, according to the legal filings (PDF), which detail how the suspects assimilated themselves in the U.S. in order to glean U.S. secrets, including nuclear weapons research, for Moscow. The link for this article located at Dark Reading is no longer available. . Recent court documents reveal that agents from Russia have utilized advanced cryptographic techniques to hide their messages, effectively dodging surveillance.. Steganography, Covert Communication, Foreign Intelligence, ElectronicEspionage. . LinuxSecurity.com Team
Jun 30, 2010
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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
83
hackingterrorismonline threatsAl-Qaeda: Hacked Sites Used For Covert Communication With Followers
The al-Qaeda terror network has begun using hackers who break into websites to create secret pages that send messages to its followers, Internet specialists say. An example of this practice came earlier this month when a message purportedly from al-Qaeda chief . . . . The al-Qaeda terror network has begun using hackers who break into websites to create secret pages that send messages to its followers, Internet specialists say. An example of this practice came earlier this month when a message purportedly from al-Qaeda chief Osama bin Laden appeared on cenobite.com, a website started by a fan of science fiction writer Clive Barker. Andrew Weisburd, an online activist who tracks terrorist groups, said he believes al-Qaeda began using this technique to communicate after the rights expired to alneda.com, a website often linked to al-Qaeda. What is unusual, say security specialists, is that the operators of the innocent websites are often unaware of the intrusion until well after the fact, because the data is place on a hidden file that can only be accessed with the correct code. The link for this article located at iafrica.com is no longer available. . ISIS is utilizing cyber operatives to breach online platforms and establish hidden sections for interacting with adherents.. Al-Qaeda Hacking, Cyber Threats, Covert Messaging, Online Security. . LinuxSecurity.com Team
Oct 29, 2002
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Hacks/Cracks
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