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Cybersecurity: Computer Networking: DNS Security Guide

Clear Explanation on DNS records A , AAA , MX , TXT , NS etc check live update of DND update using website - https://lnkd.in/gD--ppAe

🌐 New Report on Domain Name System (DNS) - Essential for IT Professionals and Cybersecurity Enthusiasts 🚀 I’ve just completed an in-depth report on the Domain Name System (DNS), one of the core technologies that keeps the internet running smoothly. This report delves into: The DNS architecture and its hierarchical structure. The critical role of recursive and authoritative DNS servers. Various DNS record types like A, AAAA, CNAME, MX, and more. Security challenges such as DNS Spoofing, DNS Tunneling, and DDoS attacks. How DNSSEC helps protect DNS from attacks by ensuring data integrity and authenticity. Troubleshooting common DNS issues such as DNS propagation delays and cache poisoning. Whether you're in networking, cybersecurity, or just interested in understanding how the internet translates domain names into IP addresses, this report provides key insights and practical knowledge. #DNS #Networking #CyberSecurity #TechInsights #DNSSEC #ITInfrastructure #Tech #InformationSecurity #CloudComputing

Fake Palo Alto VPN Attack (WikiLoader) vs. How NVIS AI Can Protect Your Organization 🚨 Cybercriminals continue to innovate, as seen in the recent attack where WikiLoader malware was distributed by impersonating Palo Alto's VPN portals via an SEO poisoning campaign. This breach highlights the importance of proactive defense strategies for organizations. Our latest blog dives into how NVIS AI’s cutting-edge security features—including peer-to-peer (P2P) architecture, encrypted data-in-transit, Zero Trust framework, and lack of a public attack surface—could have prevented this attack. 🔑 Key Highlights: 1️⃣ Data-in-transit encryption to shield sensitive information 2️⃣ P2P architecture to reduce attack points 3️⃣ No public attack surface for attackers to target Stay ahead of cyber threats with NVIS AI’s advanced solutions. Read the full blog now to learn more about how to protect your organization from sophisticated attacks like this. https://lnkd.in/gKW4X2MA

D-Link won’t fix critical flaw affecting 60,000 older NAS devi More than 60,000 D-Link network-attached storage devices that have reached end-of-life are vulnerable to a command injection vulnerability with a publicly available exploit. The flaw, tracked as CVE-2024-10914, has a critical 9.2 severity score and is present in the ‘cgi_user_add’ command where the name parameter is insufficiently sanitized. An unauthenticated attacker could exploit it to inject arbitrary shell commands by sending specially crafted HTTP GET requests to the devices. Stay Connected to Sidharth Sharma, CPA, CISA, CISM, CFE, CDPSE for content related to Cyber Security. #CyberSecurity #JPMC #Technology #InfoSec #DataProtection #DataPrivacy #ThreatIntelligence #CyberThreats #NetworkSecurity #CyberDefense #SecurityAwareness #ITSecurity #SecuritySolutions #CyberResilience #DigitalSecurity #SecurityBestPractices #CyberRisk #SecurityOperations 

🎯Ensuring secure communication over networks is crucial in today's interconnected world. Network security protocols play a vital role in protecting data integrity and privacy during transmission. Some widely used protocols include: ▶ IPsec (Internet Protocol Security) - Comprehensive suite for securing IP communications with encryption and authentication. 🔽 SSL/TLS (Secure Sockets Layer/Transport Layer Security) - Cryptographic protocols enabling secure web browsing, email, and other online services. ◀ SSH (Secure Shell) - Secure remote login and file transfer protocol with strong encryption and authentication mechanisms. 🔼 HTTPS (Hypertext Transfer Protocol Secure) - HTTP over SSL/TLS, providing encrypted and authenticated communication for web browsing. ⏹ SFTP/FTPS (Secure File Transfer Protocol) - Secure versions of FTP for transferring files over encrypted connections. ⏸ SMTP over TLS (Simple Mail Transfer Protocol over TLS) - Encrypts email transmission, preventing eavesdropping and spoofing. ⏺ DNSSEC (Domain Name System Security Extensions) - Secures DNS against attacks like spoofing and cache poisoning. ⏏ VPN (Virtual Private Network) - Enables secure remote access and encryption of network traffic over public networks. Stay Connected to Sidharth Sharma, CPA, CISA, CISM, CFE, CDPSE for content related to Cyber Security. #CyberSecurity #JPMC #Technology #InfoSec #DataProtection #DataPrivacy #ThreatIntelligence #CyberThreats #NetworkSecurity #CyberDefense #SecurityAwareness #ITSecurity #SecuritySolutions #CyberResilience #DigitalSecurity #SecurityBestPractices #CyberRisk #SecurityOperations 

🌐 Day 57 of #100DaysOfCybersecurity 🛡️ Today’s Focus: DNS Records 🔑 What are DNS Records? DNS (Domain Name System) records are entries in a DNS database that map domain names to IP addresses and other essential information. They are crucial for directing internet traffic and providing key data that helps systems and applications connect securely. 💡 Common DNS Record Types and Use Cases: - A Record: Directs traffic to a domain’s IPv4 address. - MX Record: Routes emails to the correct mail server. - TXT Record: Used for domain verification and security policies, such as SPF. - CNAME Record: Maps a domain to another domain, often for aliases. 💡 Pro Tip: Leverage tools like dig, nslookup, and cloud-based DNS monitoring solutions to analyze and monitor DNS records actively for security risks. #Cybersecurity #DNS #DNSRecords #NetworkSecurity #InfoSec #ThreatDetection #100DaysOfCybersecurity #InternetSecurity #DNSSEC

Great share Andy Jenkinson Your attached report from ComputerWeekly.com was published in .... 2016 that was 8 years ago Y'all. The report said 559 files capturing DNS traffic were uploaded to Infoblox for assessment from 248 customers across a wide range of industries and geographies. Evidence of suspicious DNS activity, such as attempting to reach known malicious internet locations, was present in 66% of the files. So... do you still believe DNS vulnerabilities are NOT one of the primary drivers for Threat Agents to access and infiltrate your networks. Victor Meldrew - One Foot in the Grave - accepted!!

🚨 Urgent Security Alert 🚨 InkBridge Networks has flagged a critical thirty-year-old design flaw in the RADIUS protocol, allowing advanced attackers to bypass multi-factor-authentication (MFA) and infiltrate local networks. Dubbed the BlastRADIUS attack, this vulnerability poses a significant threat to corporate networks, including internal enterprise networks, ISPs, and telcos. Discovered by a collaborative team from Boston University, Cloudflare, BastionZero, Microsoft Research, Centrum Wiskunde & Informatica, and UC San Diego, the flaw is identified as CVE-2024-3596 and VU#456537. The root cause lies in unauthenticated Access-Request packets within the RADIUS protocol, enabling attackers to manipulate network access. Primarily used for authentication, authorization, and accounting, the RADIUS protocol remains prevalent in modern networking devices like switches, routers, access points, and VPN products. This widespread usage amplifies the vulnerability, making countless devices susceptible to exploitation. Stay vigilant and ensure your network security measures are up to date to mitigate the risks associated with this critical vulnerability. #CyberSecurity #NetworkSecurity #VulnerabilityAlert

In 1999, when many of todays security professionals were children, Daniel J. Bernstein (DJB) warned the world about the exposure and vulnerabilities of DNS servers. DJB's concerns went largely ignored. Nearly a decade later, in 2008, Dan Kaminsky demonstrated how DNS security flaws left the entire Internet vulnerable to attacks. Microsoft and others responded with temporary fixes, but these were mere patches and failed to address the underlying issues. In 2013, Edward Snowden exposed how the NSA, along with their allies, had long exploited the Internet's weaknesses, including DNS and Public Key Infrastructure (PKI), to carry out mass surveillance. This became the MO for Cyberwars and Cyber Crime. Rather than spurring real action to address and improve security, Snowden's and Kaminsky's revelations armed adversaries with knowledge of these vulnerabilities, as the NSA sought to cover-up and keep their methods secret. DNS attacks picked up and in 2018 large numbers of U.S. Federal Agencies suffered DNS attacks. This served as the catalyst for CISA to reluctantly issue their first Emergency Directive - M-19-01 on DNS Tampering and Abuse. In his 2008 Black Hat presentation, Kaminsky emphasized that DNS insecurity wasn’t just a national security issue—it was a global threat, now being exploited by adversaries worldwide. The slide below is from Kaminsky's Black Hat presentation. Despite Kaminsky’s warnings and Snowden's disclosures, the majority still ignore or dismiss these critical vulnerabilities. Adversaries continue to exploit these weaknesses, and the Internet remains dangerously exposed. The failure to address these flaws leaves organizations and users vulnerable, with real security still out of reach. As Dan Kaminsky concluded: ''DNS should not have been capable of this much damage - it was - But Why? “ Whilst Ignorance is NOT Bliss, Ignorance is however a choice... Cybersec Innovation Partners