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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enterpriseanti-spamspamExponential Spam Growth In 2002: Economic Effects And Email Threats
The growth of the spam problem in 2002 has been exponential. Companies that sell spam filtering software say currently the percentage of email that is spam could be 20%, 33%, or even up to 50%, compared to less than 10% a year ago. While the rise in spam is easy to notice, it is hard to quantify. Spam is by definition "unsolicited commercial email", and often. . . . The growth of the spam problem in 2002 has been exponential. Companies that sell spam filtering software say currently the percentage of email that is spam could be 20%, 33%, or even up to 50%, compared to less than 10% a year ago. While the rise in spam is easy to notice, it is hard to quantify. Spam is by definition "unsolicited commercial email", and often spamees cannot remember signing up to have their email addresses added to lists, or were not aware they were doing so. BrightMail Inc, the market leader in anti-spam services, says emails sent to its honey-pot email addresses are by definition unsolicited, and that it has seen spam on its customers' networks increase from 8% of mail to 41% of mail in the last 14 months. Wasting time deleting UCE can be a productivity concern for enterprises. A survey by SurfControl Plc said 25% of enterprise email is spam and that each message costs up to a dollar. CloudMark Inc said 10 spams per day could cost a company $86 per employee per year. Even if getting spam was free, there's a general consensus it's still annoying enough to want to filter. But why has it become so much of a problem this year? We asked executives from companies that provide anti-spam software and services to explain. "Now anyone can do it," said Pavni Divanji, CEO of MailFrontier Inc. "The process is so streamlined. You can buy a CD of email addresses, buy mailing software, find an open relay and start doing it. People think it's easy and that they can make a few dollars off it." The economics of spam are attractive for both the spammers and the companies that pay them to spam, particularly given the macroeconomy in the US. Email marketing has low response rates, typically less than half a percent, but is very, very cheap. Growing numbers of e-businesses can't blow $50m of IPO money on TV and direct mail campaigns any more, and all the people they laid off into a depressed job market are looking for new sources of income. Enrique Salem, CEO of BrightMail, said he talked to a spammer last week who was paid $1,500 to send one million spams. Even with a response rate of just one tenth of a percent, that's 1,000 likely customers reached for $1.50 a head. For the spammer, the cost was negligible. "A lot of the Chinese, Korean and Latin American spam originates in the US ... People are looking at alternate ways to make money. It's a way to augment their income," said Salem. "Companies are looking at alternative ways to market and reach customers." It's also exceptionally easy to get started as a spammer. CDs of 150 million email addresses can be bought for as little as $100 online. Web sites maintain lists of open email relays, many in Asia, which can be used to push mail through. "The social stigma has gone," said MailFrontier's Divanji. "People don't think twice about doing it." This point is debatable. While spammers think as long as no laws are broken they are not doing anything wrong, recent published interviews with spammers tell stories of harassment from irate spamees, both online and off. But, just as finding people who respond to spam is a numbers game, finding people who have no ethical qualms with eating the bandwidth of millions of people and giving them headaches every morning should be easy. "If this trend continues unchecked, it's going to make email unusable," said Salem. . The growth of the spam problem in 2002 has been exponential. Companies that sell spam filtering soft. growth, problem, exponential, companies, filtering. . LinuxSecurity.com Team
Nov 03, 2023
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Privacy
77
best practicescommand-lineUNIX habits10 Good UNIX Habits To Enhance Command-Line Productivity
When you use a system often, you tend to fall into set usage patterns. Sometimes, you do not start the habit of doing things in the best possible way. Sometimes, you even pick up bad practices that lead to clutter and clumsiness. One of the best ways to correct such inadequacies is to conscientiously pick up good habits that counteract them. This article suggests 10 UNIX command-line habits worth picking up -- good habits that help you break many common usage foibles and make you more productive at the command line in the process. Each habit is described in more detail following the list of good habits. . The link for this article located at IBM is no longer available. . Delve into essential UNIX command-line practices that can boost efficiency and refine your daily tasks. Maximize your output now!. UNIX habits, Command-Line Productivity, Efficiency Techniques. . LinuxSecurity.com Team
Dec 19, 2006
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Server Security
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