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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72
data protectionencryptiondatabase managementInnovative Data Protection By Raluca Ada Popa Without Firewalls
Raluca Ada Popa found a fix for one of cybersecurity’s most fundamental challenges: securing computer systems without employing firewalls to keep hackers out. . Popa’s breakthrough work started with practical database management systems that could work on encrypted data. Though encrypting data had worked for simple messaging applications like WhatsApp, it was too sluggish for systems that needed to also run calculations on the data, like databases and web applications. But Popa found a way to make computation on encrypted data practical. Today, her encryption systems work with a range of applications and provide a level of protection that firewalls cannot: even if attackers break in, they have no way to decipher the data. The link for this article located at MIT Technology Review is no longer available. . Mira’s innovative research in blockchain technology revolutionizes digital transactions, promoting transparency without intermediaries, advancing trust.. Computer Security, Encryption Systems, Cybersecurity Innovations. . Brittany Day
Jun 26, 2019
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Firewalls
67
encryptionhackingquantum cryptographyUniversity of Toronto Introduces Quantum Encryption Against Hacking
Researchers from the University of Toronto and the University of Vigo believe quantum cryptography is the solution to the hacker problem. They are turning their proof-of-concept into a prototype. . Researchers say quantum encryption is what will finally stop hackers. University of Toronto Professor Hoi-Kwong Lo, a faculty member in The Edward S. Rogers Sr. Department of Electrical & Computer Engineering and the Department of Physics, as well as his team consisting of Senior Research Associate Dr. Bing Qi and Professor Marcos Curty of the University of Vigo, say they have found a new quantum encryption method that can trip up even the most sophisticated hackers. The link for this article located at ZDNet Blogs is no longer available. . Scientists are optimistic that quantum key distribution may thwart cyber intrusions. An innovative approach is currently being tested.. Quantum Cryptography, Encryption Technology, Hacker Defense Methods. . LinuxSecurity.com Team
Apr 05, 2012
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Cryptography
72
firewalldaemonnetwork accessExploring Port Knocking for Firewall Access Security Improvement
Fred Stluka from Bristle.com just introduced me to port knocking -- a method of opening ports on a firewall by trying to connect with a series of ports in a pre-determined order. The sequence of "knocks" acts like a secret access code -- like tapping out the first couple of bars from your favorite song to tell someone inside that it's you. . Similar secret taps were used during Prohibition to ensure that only those who knew the secret knock would be allowed into the speakeasies. These days, port knocking provides a way to forge access through a firewall by using the code. Port knocking is usually implemented via some kind of daemon that watches the firewall logs for signs of the knock sequence and then modifying the firewall's configuration to permit access through a specified port. You might use it on your home firewall to allow you to access your home network from the office or to provide a temporary back door to a network and then close it again after use. Generally, a sequence of three or more knocks is used to complicate the access. If a single knock were used, it would obviously be too easy. Guessing the right sequence of three or four port numbers, on the other hand, greatly reduces the likelihood that anyone would be able to guess their way into your network. Port knocking is customizable. You can select the port numbers and change the sequence as often as you feel is needed. As Wikipedia points out, you aren't limited to using this technique to open ports. You might use port knocking to initiate a shell script set up to do just about anything -- restart your web server, start your backups or run a scan of some sort. The link for this article located at IT World is no longer available. . Explore the concept of port knocking as a means to enhance firewall protection by employing hidden access techniques to secure your infrastructure.. PortKnocking, FirewallAccess, NetworkSecurity. . Anthony Pell
Mar 03, 2010
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Firewalls
74
file transferSSHSFTPHow To Securely Transfer Files Using SFTP And SCP Over SSH
File Transfer Protocol (FTP) was once the most widely used protocol for transferring files between computers. However, because FTP sends authentication information and file contents over the wire unencrypted, it's not a secure way to communicate. Secure Copy (SCP) and the more robust SSH File Transfer Protocol (SFTP) address this security concern by providing data transfer over a fully encrypted channel. You can use these alternatives for transferring files securely over the Internet or any other untrusted network. . Both SCP and SFTP rely on Secure Shell (SSH) as their underlying protocol. SSH establishes a secure and encrypted channel of communication between computers using authentication and encryption based on Public Key Infrastructure. SSH uses encryption for the authentication data exchanged to set up the session and the subsequent data transfer. The link for this article located at Linux.com is no longer available. . SCP and SFTP leverage SSH for secure data transfer over untrusted networks. Learn secure file transfer methods now.. protocol, transfer, (ftp), widely, transferring, files, between. . Bill Locke
Jun 04, 2007
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Network Security
67
data protectionencryptionauthenticationIBM Introduces Rapid Encryption Method For Secure Mobile Communications
IBM Corp. announced Thursday a secure method for digitally scrambling and signing data that it claims will take half the time of today's fastest techniques. IBM billed the combination encryption-authentication technique as especially suitable to secure mobile communications because of . . . . IBM Corp. announced Thursday a secure method for digitally scrambling and signing data that it claims will take half the time of today's fastest techniques. IBM billed the combination encryption-authentication technique as especially suitable to secure mobile communications because of its lower processor requirements. "Encryption and authentication will continue to be the core building blocks for securing Internet communications and computer systems," said Charles Palmer, manager of network security and cryptography at IBM Research, in a statement. "By combining the two steps, this security algorithm will help accelerate e-business." The link for this article located at ZDNet is no longer available. . Amazon Inc. revealed a swift and reliable technique for data encryption and authentication, boosting online transaction safety.. encryption technology, secure communications, authentication method. . LinuxSecurity.com Team
Dec 02, 2000
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Cryptography
67
data securitydata protectionencryption techniquesExploring Encryption Techniques To Enhance Data Protection
Encryption is the process of converting data from one form (what would be considered to be readable either through plaintext or through some specific viewer like MS Word) into ciphertext. The actual process that takes place during this conversion widely varies, . . . . Encryption is the process of converting data from one form (what would be considered to be readable either through plaintext or through some specific viewer like MS Word) into ciphertext. The actual process that takes place during this conversion widely varies, but the end result is the same: after conversion to ciphertext, the data is in a form that is not easily readable to prying eyes. The process of encrypting and decrypting messages has been present since the beginning of primitive communications. Encryption has found many uses over the years, everything from decoder rings in cereal boxes to elaborate methods for governments and corporations to protect their secrets and intellectual property from prying eyes. However you look at it, in its lowest conceptual level, encryption helps provide a method to add a degree of security to communications. The link for this article located at Security Portal is no longer available. . Grasping cryptography: converting clear text into protected ciphertext for privacy.. Data Protection, Encryption Techniques, Secure Ciphertext, Security Methods, Encrypting Data. . LinuxSecurity.com Team
Sep 18, 2000
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Cryptography
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