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Network SecurityPrice Tag 1system 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...
1 min read Network Security
2.Motherboard Esm H350
Server SecurityPrice Tag 1open-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...
3 - 6 min read Server Security
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Vendors/ProductsPrice Tag 1security 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...
5 - 10 min read Vendors/Products
30.Lock Globe Motherboard Esm H350
Security Trends Price Tag 1access 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...
4 - 8 min read Security Trends
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Vendors/ProductsPrice Tag 1incident 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...
4 - 7 min read Vendors/Products
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Price Tag 1security advisorynull pointerroot access

Linux Kernel: Root Access Advisory Due to Null Pointer Dereference

A null pointer dereference in the Linux kernel can be exploited to access a system at root privilege level. The hole is reportedly contained in pipe.c and can occur in certain circumstances when using the pipe_read_open(), pipe_write_open() or pipe_rdwr_open() functions while releasing a mutex (mutual exclusion) too early . However, like previous null pointer dereference issues in the Linux kernel, the vulnerability can only be exploited if the kernel's mmap_min_addr system variable is set to 0. mmap_min_addr describes the lowest virtual address a process can use for mapping. If it is greater than 0, exploits that involve a null-valued pointer to this address won't work. However, as this will also cause certain open source applications like Wine and DOSEMU to malfunction, distributors such as Red Hat and Debian set the respective value to 0 by default. Red Hat has already released updated packages to close the hole. Debian offers instructions on how to change the variable. In Ubuntu, mmap_min_addr is set to 65535, which renders exploits ineffective. The link for this article located at H Security is no longer available. . A null pointer dereference in the Linux kernel can lead to significant security vulnerabilities, potentially giving malicious users unauthorized root access. Linux Kernel Security, Root Access Exploit, Null Pointer Threats, Kernel Vulnerability Solutions. . LinuxSecurity.com Team

Calendar 2 Nov 04, 2009 •User Avatar LinuxSecurity.com Team Server Security
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[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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