Sites like

sans.edu
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Abuse.ch

abuse.ch | Fighting malware and botnets

abuse.ch | Fighting malware and botnets

Sans.org

Cyber Security Training | SANS Courses, Certifications & Research

SANS Institute is the most trusted resource for cybersecurity training, certifications and research. Offering more than 60 courses across all practice areas, SANS trains over 40,000 cybersecurity professionals annually.

Rapid7.com

Cybersecurity & Compliance Solutions & Services | Rapid7

Supercharge your security impact with Rapid7, delivering shared visibility, analytics, and automation to unite security, IT, and DevOps teams.

Nmap.org

Nmap: the Network Mapper - Free Security Scanner

Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.

Exploit-db.com

Mitre.org

The MITRE Corporation

About Corporate Overview Our History Mission and Values Visiting MITRE Leadership Executive Team Board of Trustees Fellows Technical Fellows Visiting Fellows Awards and Recognition Corporate Social Responsibility Building a Foundation for the Future MITRE Staff Cultivates Los Angeles' Science Ecosystem Bringing Real World STEM to Students Building Partnerships and Diversity,...

Infosecinstitute.com

IT & Security Education, Certifications, Awareness & Phishing Simulator - Infosec

Infosec helps IT and security professionals advance their careers with skills development and certifications while empowering all employees with security awareness and privacy training to stay cyber-safe at work and home.

Paloaltonetworks.com

Global Cybersecurity Leader - Palo Alto Networks

Palo Alto Networks enables your team to prevent successful cyberattacks with an automated approach that delivers consistent security across cloud, network and mobile.

Abuseipdb.com

AbuseIPDB - IP address abuse reports - Making the Internet safer, one IP at a time

Check an IP Address, Domain Name, or Subnet e.g. 38.242.237.160, microsoft.com, or 5.188.10.0/24 Check AbuseIPDB making the internet safer, one IP at a time Report abusive IPs engaging in hacking attempts or other malicious behavior and help fellow sysadmins! Report IP Now Check the report history of any IP address...

Grc.com

  Home of Gibson Research Corporation  

Steve Gibson's and Gibson Research Corporation's Web homepage.

Cisa.gov

Homepage | CISA

CISA leads the effort to enhance the security, resiliency, and reliability of the Nation's cybersecurity and communications infrastructure.

Giac.org

Cyber Security Certifications | GIAC Certifications

GIAC Certifications develops and administers premier, professional information security certifications. More than 30 certifications align with SANS training and ensure mastery in critical, specialized InfoSec domains. GIAC certifications provide the highest and most rigorous assurance of cyber security knowledge and skill available to industry, government, and military clients across the world.

Csoonline.com

CSO - CSO Online – IT-Security-News für Profis

News und Insights zur Cybersicherheit im Unternehmen. Alles was CSOs wissen müssen.

Eccouncil.org

Certified Ethical Hacker | InfoSec Cyber Security Certification | EC-Council

EC-Council is a global leader in InfoSec Cyber Security certification programs like Certified Ethical Hacker and Computer Hacking Forensic Investigator.

Auditmypc.com

Audit My PC

Free Web tools include firewall test and speed test plus sitemap generator and other online tools for webmasters and home users.

Speedguide.net

SpeedGuide :: Broadband Tweaks, Wireless Networks, Security

SpeedGuide.net - Broadband Tweaks, Tools, Info, News & more "Some of the Best Broadband Speed Tweaks on the Net" We cover Broadband Internet connections, network security, wireless and system performance. A large section of SG focuses on Cable Modems and DSL technology, stressing on improving TCP/IP performance over high speed/latency networks....

Fireeye.com

Adminsub.net

Free online IPv4 subnet calculator - adminsub.net

Simple and fast internet online subnet masks, ip address subnet, ip subnetting, ipv4 subnet calculator. Enter ip address, network mask and get all info: address, netmask, wildcard, network, hosts and more

Zeltser.com

Lenny Zeltser | Information Security in Business

Advances information security. Grows tech businesses. Fights malware.

Us-cert.gov

Homepage | CISA

As part of its mission, CISA leads the effort to enhance the security, resiliency, and reliability of the Nation's cybersecurity and communications infrastructure.

Wireshark.org

Wireshark · Go Deep.

Download Get Started Now Learn Knowledge is Power Go Beyond With Wireshark Sponsors About Wireshark About Awards and Accolades Authors Wireshark Sponsors Wireshark is the world’s foremost and widely-used network protocol analyzer. It lets you see what’s happening on your network at a microscopic level and is the de facto...

Nordicsemi.com

Nordic Semiconductor | Specialists in Low Power Wireless - nordicsemi.com

Nordic Semiconductor is a fabless semiconductor company specializing in wireless technology for the IoT.

Seclists.org

SecLists.Org Security Mailing List Archive

Security mailing list archive for the Nmap lists, Bugtraq, Full Disclosure, Security Basics, Pen-test, and dozens more. Search capabilities and RSS feeds with smart excerpts are available

My-addr.com

Online Free Network tools lookup:IP,Domains,Emails,Trace,Ping,DNS, etc.

Online Free Network tools lookup:IP,Domains,Emails,Trace,Ping,DNS, etc.

Papercut.com

PaperCut: Print management software

Print management software that’s helping hundreds of millions of people around the globe to minimize waste while having a secure and easy printing experience.

Dshield.org

Pearsonitcertification.com

Pearson IT Certification: Videos, flash cards, simulations, books, eBooks, and practice tests for Cisco, CompTIA, and Microsoft exams

Prepare for your certification with innovative learning products, question of the day alerts, blogs, interviews, and video podcasts from industry experts.

Tenable.com

Tenable® - The Cyber Exposure Company

Welcome to the modern era of cyber exposure. Join the movement.

Krebsonsecurity.com

Krebs on Security – In-depth security news and investigation

In-depth security news and investigation

Checkpoint.com

Leader in Cyber Security Solutions | Check Point Software

Check Point Infinity architecture delivers consolidated Gen V cyber security across networks, cloud, and mobile environments.

Fortiguard.com

FortiGuard

View by Product Network Intrusion Protection Anti-Recon and Anti-Exploit Secure DNS IP Reputation/Anti-Botnet Indicators of Compromise IP Geolocation Service Cloud Workload Security Service Content and Endpoint Endpoint Detection & Response Anti-Virus Endpoint Vulnerability Device Detection ANN and NDR Sandbox Behavior Engine Application Web Filtering Anti-Spam Application Control Industrial Security Services...

Cisecurity.org

CIS Center for Internet Security

CIS is a forward-thinking nonprofit that harnesses the power of a global IT community to safeguard public and private organizations against cyber threats.

Scmagazine.com

SC Media | Homepage

The latest in-depth, unbiased news, analysis and perspective to keep cybersecurity professionals informed, educated and enlightened about the market.

Networksorcery.com

Msmvps.com

Symantec.com

Symantec Enterprise Cloud

To meet today's Cyber Security challenges, enterprises need an integrated cyber defense platform that integrates industry-leading solutions and solves for the most pressing C-level challenges like evolving threats, privacy & compliance, and digital transformation.

Isaca.org

Advancing IT, Audit, Governance, Risk, Privacy & Cybersecurity | ISACA

ISACA is a global association that provides IT professionals with knowledge, credentials, training and community in audit, governance, risk, privacy and cybersecurity.

Sonicwall.com

Next-Gen Firewalls & Cybersecurity Solutions - SonicWall

Defend SMBs, enterprises and governments from advanced cyber attacks with SonicWall's award-winning firewalls and cyber security solutions.

Ietf.org

IETF | Internet Engineering Task Force

Welcome to the IETF IETF Hackathon in Philadelphia Help define and improve new Internet technologies by working on running code in Philadelphia on 23-24 July. Learn more about how anyone can participate Upcoming events IETF 114 Philadelphia  IETF 114 starts Saturday 23 July and runs through Friday afternoon, 29 July....

Watchguard.com

WatchGuard Technologies | Network Security, Secure Wi-Fi, MFA, and Endpoint Security Solutions

Award-winning solutions that are easy to deploy and manage, making enterprise-grade security accessible to any organization regardless of size or expertise.

Bluetooth.com

Acunetix.com

Acunetix | Web Application Security Scanner

Acunetix is an end-to-end web security scanner that offers a 360 view of an organization’s security. Allowing you to take control of the security of all you web applications, web services, and APIs to ensure long-term protection. Acunetix’s scanning engine is globally known and trusted for its unbeatable speed and precision.

Iana.org

Internet Assigned Numbers Authority

Domain Names Root Zone Registry .INT Registry .ARPA Registry IDN Repository Number Resources Abuse Information Protocols Protocol Registries Time Zone Database About Us Presentations Reports Performance Reviews Excellence Contact Us The IANA functions coordinate the Internet’s globally unique identifiers, and are provided by Public Technical Identifiers, an affiliate of ICANN....

Trendmicro.com

#1 bei Cloud-Sicherheit & Endpunkt-Cybersicherheit | Trend Micro (DE)

Trend Micro ist der weltweit führende Anbieter von Plattformlösungen für Cloud-Sicherheit, XDR und Cybersicherheit – für Unternehmen, Rechenzentren, Cloud-Umgebungen, Netzwerke und Endpunkte.

Cybrary.it

Free Cybersecurity Training and Career Development | Cybrary

Cybersecurity training from Cybrary will take your career to the next level. We have the cybersecurity courses that can help get you there!

Didierstevens.com

Didier Stevens

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Danielmiessler.com

Daniel Miessler | Security, Technology, and Society

Exploring the intersection of security, technology, and society—and what might be coming next.

Owasp.org

OWASP Foundation | Open Source Foundation for Application Security

OWASP Foundation, the Open Source Foundation for Application Security on the main website for The OWASP Foundation. OWASP is a nonprofit foundation that works to improve the security of software.

Ipaddressguide.com

Free IP address tools for IPv4 and IPv6 | IPAddressGuide

Free IP address tools for ping, traceroute, reverse DNS lookup, CIDR conversion, Netmask conversion, decimal conversion and IP lookup for IPv4 and IPv6

Blackhat.com

Black Hat | Home

Black Hat Webinars Security Research in Real Time June 30, 2022 - Managing Cybersecurity as a Business Risk July 14, 2022 - InfoSec Lessons from the War in Ukraine Sponsor a Webinars View all of our recent Webinars Black Hat Archives Watch Past Presentations View all of our archived videos...

F5.com

F5 | Multi-Cloud Security and Application Delivery

F5 application services ensure that applications are always secure and perform the way they should—in any environment and on any device.

Ultratools.com

UltraDNS Enterprise-grade DNS with 100% Uptime | Neustar

Neustar UltraDNS delivers 100% uptime SLA, DNSSEC support & DDoS protection to thousands of companies across the globe including Fortune 500 companies.

Packetstormsecurity.com

Packet Storm

Information Security Services, News, Files, Tools, Exploits, Advisories and Whitepapers

Securityaffairs.co

Security Affairs - Read, think, share … Security is everyone's responsibilitySecurity Affairs

Security Affairs - Every security issue is our affair. Read, think, share … Security is everyone's responsibility

Threatpost.com

Threatpost | The first stop for security news

Threatpost, is an independent news site which is a leading source of information about IT and business security for hundreds of thousands of professionals worldwide.

Cvedetails.com

CVE security vulnerability database. Security vulnerabilities, exploits, references and more

CVEdetails.com is a free CVE security vulnerability database/information source. You can view CVE vulnerability details, exploits, references, metasploit modules, full list of vulnerable products and cvss score reports and vulnerability trends over time

Beyondsecurity.com

Beyond Security | Automated Vulnerability Security Testing & Compliance

Secure your applications and networks with the industry's only network vulnerability scanner to combine XDR, SAST, DAST and mobile security.

Tripwire.com

Qualys.com

Information Security and Compliance | Qualys

Qualys, Inc. helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.

Securityboulevard.com

Peerlyst.com

Helpnetsecurity.com

Help Net Security - Information Security News

Information security news with a focus on enterprise security. Discover what matters in the world of cybersecurity today.

Hackingarticles.in

Hacking Articles - Raj Chandel's Blog

Raj Chandel's Blog

Andreafortuna.org

Andrea Fortuna | Cybersecurity expert, software developer, experienced digital forensic analyst, musician

Cybersecurity expert, software developer, experienced digital forensic analyst, musician

Hackertarget.com

28 Online Vulnerability Scanners & Network Tools | HackerTarget.com

Online Vulnerability Scanners to map the attack surface and identify vulnerabilities. 28 trusted open source security scanners and network tools.

Securityintelligence.com

Security Intelligence - Cybersecurity Analysis & Insight

The Security Intelligence blog features analysis and insights from hundreds of the brightest minds in the cybersecurity industry.

Trustwave.com

Alienvault.com

AlienVault is now AT&T Cybersecurity

At AT&T Cybersecurity our mission is to provide phenomenal threat intelligence, collaborative defense & effective security for organizations of all sizes.

Darkreading.com

Dark Reading | Security | Protect The Business

Cyber security's comprehensive news site is now an online community for security professionals, outlining cyber threats and the technologies for defending against them.

Securityweek.com

Cybersecurity News, Insights and Analysis | SecurityWeek

SecurityWeek provides cybersecurity news and information to global enterprises, with expert insights and analysis for IT security professionals.

Blackhillsinfosec.com

Scotthelme.co.uk

Scott Helme

Hi, I'm Scott Helme, a Security Researcher, Entrepreneur and International Speaker. I'm the creator of Report URI and Security Headers and I deliver world renowned training on Hacking and Encryption.

Talosintelligence.com

Cisco Talos Intelligence Group - Comprehensive Threat Intelligence

Cisco Talos Intelligence Group is one of the largest commercial threat intelligence teams in the world. Comprised of world-class cyber security researchers, analysts and engineers and supported by unrivaled telemetry, Talos defends Cisco customers against known and emerging threats, discovers new vulnerabilities in common software, and interdicts threats in the wild before they can further harm the internet at large.

Pi-hole.net

Pi-hole – Network-wide protection

1. Install a supported operating system You can run Pi-hole in a container, or deploy it directly to a supported operating system via our automated installer. Docker install Supported operating systems 2. Install Pi-hole Our intelligent, automated installer asks you a few questions and then sets everything up for you. ...

Vulners.com

Vulners - Vulnerability DataBase

Vulners - Vulnerability DataBase