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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security breachfraudhacking caseMatthew Delorey Hacking Case: Cable Modem Fraud Arrest by U.S. Authorities
U.S. federal authorities arrested a 26-year-old man on Thursday for allegedly selling modified cable modems that enabled free Internet access, according to the U.S. Department of Justice. Matthew Delorey of New Bedford, Connecticut, is charged with one count of conspiracy and one count of wire fraud. If convicted, he could face up to 20 years in prison for each charge, and a $250,000 fine.. Delorey allegedly ran a now-defunct Web site called Massmodz.com, where hacked modems were sold. The modems had been modified in order to spoof the device's MAC (Media Access Control) address. It is possible then to either obtain free Internet access or make it appear that a different modem is obtaining access. Authorities alleged that Delorey sold two of the modified modems to an undercover agent of the U.S. Federal Bureau of Investigation. The videos Delorey allegedly posted to YouTube showing how to get free Internet access through modified cable modems probably won't help his case. The link for this article located at PC World is no longer available. . Delorey allegedly ran a now-defunct Web site called Massmodz.com, where hacked modems were sold. The site facilitated fraud.. federal, authorities, arrested, 26-year-old, thursday, allegedly, selling, modified, cable. . Alex
Jan 30, 2010
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Government
74
network securityservice providerembedded systemsCustom Firmware Exposes Eavesdropping Threats in Cable Modems
A small and diverse band of hobbyists steeped in the obscure languages of embedded systems has released its own custom firmware for a popular brand of cable modem, along with a technique for loading it -- a development that's already made life easier for uncappers and service squatters, and threatens to topple long-held assumptions about the privacy of cable modem communications. The program, called Sigma, was released in its final version last month, and has reportedly been downloaded 350 to 400 times a day ever since. It's designed to be flashed into the non-volatile memory of certain models of Motorola's Surfboard line, where it runs in parallel with the device's normal functionality. It gives users almost complete control of their cable modem -- a privilege previously reserved for the service provider. . . .. A small and diverse band of hobbyists steeped in the obscure languages of embedded systems has released its own custom firmware for a popular brand of cable modem, along with a technique for loading it -- a development that's already made life easier for uncappers and service squatters, and threatens to topple long-held assumptions about the privacy of cable modem communications. The program, called Sigma, was released in its final version last month, and has reportedly been downloaded 350 to 400 times a day ever since. It's designed to be flashed into the non-volatile memory of certain models of Motorola's Surfboard line, where it runs in parallel with the device's normal functionality. It gives users almost complete control of their cable modem -- a privilege previously reserved for the service provider. The project is the work of a gang of coders called TCNiSO. With about ten active members worldwide, the group is supported by contributions from the uncapping community -- speed-hungry Internet users who rely on TCNiSO's research and free hackware to surmount the bandwidth caps imposed by service providers, usually in violation of their service agreement, if not the law. To them, Sigma is a delight,because it makes it simple to change the modem's configuration file -- the key to uncapping, and, on some systems, to getting free anonymous service using "unregistered" modems. "I've known TCNiSO for two years now and I've done a lot of things with their techniques," wrote a Canadian uncapper in an e-mail interview. "Sigma is the greatest one I've seen." While it's a boon to uncappers, the security implications of firmware hacking go beyond mere bandwidth-boosting and theft-of-service. The topography of cable modem networks typically puts between 500 and 1,000 homes in a neighborhood on the same circuit, their Internet traffic all mingled on the same co-ax cable. Subscribers are prevented from eavesdropping on their neighbors' traffic by their own modem, which is programmed to only pass packets destined for them. By building on TCNiSO's hacking technique, a malefactor could write custom code to forward all the raw network traffic to their PC. Outside security experts have generally dismissed any eavesdropping threat on modern cable systems based on a belief that cable companies are encrypting customer traffic, a capability built into all DOCSIS-certified modems since 1999. But while encryption would indeed thwart any eavesdropping attempt, in the most commonly-deployed version of the DOCSIS standard, version 1.0, the encryption option is just that -- an option, and one that's turned off by default. "The security has to be there" in the modem, says Oscar Marcia, chief security architect at for CableLabs, the industry group responsible for DOCSIS. "But the [service provider] can decide when to turn it on." And turning it on they are, Marcia says, but slowly, and in bits and pieces, even five years after the option became available. "It's kind of a gradual process... They want to make sure that they have all the kinks worked out of their system." He adds that he expects the process to accelerate as cable companies migrate to newer versions of the DOCSIS specifications, where encryption is "on" by default, insteadof off. SecurityFocus asked four U.S. cable modem service providers if they protected their customers with the encryption option. Comcast, Adelphia, and CableVision's Optimum Online declined comment; a spokesman for Time Warner's Road Runner service didn't return repeated phone calls on the question. Comcast's terms of service, however, acknowledges a risk of eavesdropping by "other subscribers," and Optimum Online's bluntly admits the company doesn't utilize encryption: "All Subscriber's ethernet traffic... will be reflected by the cable Modem in an unencrypted form onto the cable network and be subject to eavesdropping." The link for this article located at is no longer available. . A small and diverse band of hobbyists steeped in the obscure languages of embedded systems has relea. small, diverse, hobbyists, steeped, obscure, languages, embedded, systems, relea. . Anthony Pell
Feb 09, 2004
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Network Security
83
security advisorycable modeminternet breachMyko Hein: Regret After Hacking AT&T Cable Modem Bandwidth
From a pitiable 56kbps AOL dial-up somewhere in suburban Colorado, 19-year-old Myko Hein would like to tap out this sad, regretful message to the powers-that-be at his former cable Internet provider, AT&T Broadband: I was wrong. It'll never happen again. Please take me back. . . .. From a pitiable 56kbps AOL dial-up somewhere in suburban Colorado, 19-year-old Myko Hein would like to tap out this sad, regretful message to the powers-that-be at his former cable Internet provider, AT&T Broadband: I was wrong. It'll never happen again. Please take me back. Just last month Hein thought of AT&T's service as unbearably slow -- acceptable, perhaps, for sending e-mail, but pure molasses when it came to trading software in Internet chat rooms. Hein's thirst for speed finally drove him to employ a sophisticated hack that "uncapped" his cable modem, obliterating the bandwidth limit imposed by the company, and granting him speed beyond the dreams of hotwired youth. But it only took six hours for AT&T to catch Hein, cut him off, and ban him from their network for life. "They said they considered it theft of service," recalls Hein. "There were no second chances." The link for this article located at SecurityFocus is no longer available. . From a pitiable 56kbps AOL dial-up somewhere in suburban Colorado, 19-year-old Myko Hein would like . pitiable, 56kbps, dial-up, somewhere, suburban, colorado, 19-year-old, would. . LinuxSecurity.com Team
May 09, 2002
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Hacks/Cracks
83
access controlperformance tuningcable modemOptimizing Your Cable Modem: Hacks for Better Internet Performance
When his cable modem service seemed to slow almost to a crawl last spring, Matthew Hallacy did like most people and complained to technical support at his Internet service provider, AT&T Broadband. But after the sluggish performance persisted for weeks, . . . . When his cable modem service seemed to slow almost to a crawl last spring, Matthew Hallacy did like most people and complained to technical support at his Internet service provider, AT&T Broadband. But after the sluggish performance persisted for weeks, Hallacy, a Minnesota-based software engineer and networking expert, decided to take matters into his own hands: he hacked his cable modem. "Tech support told me it wasn't their fault and the service was going as fast as it could. So I downloaded the specs for the modem off the Web and started poking around to see if that was true," said Hallacy. It wasn't long before Hallacy, 21, devised a trick for modifying an obscure configuration file used by the service to control the settings in his 3Com cable modem. A few tweaks later, Hallacy's $50-per-month service, which had been downloading data at a poky 75 kilobits per second (Kbps), was sweetly humming along at much brisker speeds in both directions. The link for this article located at Newsbytes is no longer available. . Discover the methods used by Matthew Hallacy to enhance his cable modem performance, optimizing sluggish internet connections and circumventing imposed service restrictions.. cable modem hacking, network optimization, performance tuning, configuration tricks. . LinuxSecurity.com Team
Mar 14, 2002
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Hacks/Cracks
74
security advisoryhacking riskscable modemSecurity Advisory: Hacking Risks For DSL And Cable Modem Users
As the number of DSL and cable modem users goes up, so does the likelihood of online security breaches. Predictions of how many people will be using DSL or cable modem connections to access the Internet over the next few years . . . . As the number of DSL and cable modem users goes up, so does the likelihood of online security breaches. Predictions of how many people will be using DSL or cable modem connections to access the Internet over the next few years vary wildly depending on the research group, ranging from 11 million to 49 million by 2003. So what makes DSL or cable modem users particularly susceptible to hacks? First, unlike people with dial-up access, individuals who access the Web via DSL and cable modems are usually assigned the same Internet protocol address each time they log on. The numeric address identifies the individual's computer to send and receive data. Second, DSL and cable modem users frequently stay connected to the Internet for very long, if not constant, periods of time. Hackers can use a scanning device to find a live connection between the user and a corporate network. If the person has a weak or nonexistent firewall, then the hacker can easily plant software on the user's hard drive, allowing the hacker to control the machine remotely. The link for this article located at PC World is no longer available. . As more individuals access the internet via fiber optics and satellite services, the potential for cybersecurity vulnerabilities and hacking incidents escalates.. DSL Connections, Cable Modem Security, Online Breach Risks. . Anthony Pell
Dec 08, 2000
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Network Security
74
cyber threatsnetwork safetycomputer securityUnderstanding Cyber Threats for High-Speed Internet Users
Consumers with high-speed connections to the Internet, like those provided by DSL and cable modems, are surfing at their own risk unless they take pains to protect their computers, said Frank Prince, an analyst at Forrester Research. Prince said that because . . . . Consumers with high-speed connections to the Internet, like those provided by DSL and cable modems, are surfing at their own risk unless they take pains to protect their computers, said Frank Prince, an analyst at Forrester Research. Prince said that because broadband consumers are online for long periods of time, and because their computers have a constant IP address during an online session, they are prime targets for malicious activity. The link for this article located at Wired is no longer available. . High-speed internet users face significant cyber threats, needing enhanced security measures for safety online.. high-speed internet,cable modem threats,DSL security,cyber threats. . Anthony Pell
Oct 23, 2000
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Network Security
72
home networknetworking solutionsIP masqueradingUnderstanding IP Masquerading for Efficient Internet Access Solutions
Now that relatively high-bandwidth Internet connections are becoming both commonplace and inexpensive, cable modem and DSL users wanting to put more than one computer on the Internet find that their Internet service provider will not allow them to do so. . . .. Now that relatively high-bandwidth Internet connections are becoming both commonplace and inexpensive, cable modem and DSL users wanting to put more than one computer on the Internet find that their Internet service provider will not allow them to do so. Typically, an ISP will grant a user a single, dynamically-allocated IP address to be used by only one computer at the user's home, in order to conserve their precious pool of IP addresses. The link for this article located at Linux.com is no longer available. . IP masquerading efficiently facilitates bandwidth sharing by allowing multiple devices to connect to the internet using a single public IP address without revealing internal structure. IP Masquerading, Networking Solutions, High-Bandwidth. . Anthony Pell
May 17, 2000
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Firewalls
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