113 Alternatives to offensive-security.com

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secragon.com

redbotsecurity.com

Redbot Security, Denver Co is spearheading the transition to a safer, more secure world. Comprehensive Penetration Testing Services

megacorpone.net

MegaCorp One - Nanotechnology Is the Future

yogosha.com

Uncover critical vulnerabilities and secure your assets with Offensive Security Testing — Pentest as a Service (PtaaS), Bug Bounty and VDP.

captmeelo.com

kali.org

Home of Kali Linux, an Advanced Penetration Testing Linux distribution used for Penetration Testing, Ethical Hacking and network security assessments.

exploit-db.com

The Exploit Database - Exploits, Shellcode, 0days, Remote Exploits, Local Exploits, Web Apps, Vulnerability Reports, Security Articles, Tutorials and more.

portswigger.net

PortSwigger offers tools for web application security, testing, & scanning. Choose from a range of security tools, & identify the very latest vulnerabilities.

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Level up SecOps with the only endpoint to cloud, unified cybersecurity platform. Confidently act to prevent breaches with a leading MDR partner. Request demo!

cvedetails.com

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

virtualbox.org

Oracle VM VirtualBox

hackingarticles.in

Raj Chandel's Blog

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Cybersecurity courses, certification and cyber security training from Cybrary, for individuals and business organization teams to get IT & cyber security certified and develop career skills.

metasploit.com

Find security issues, verify vulnerability mitigations & manage security assessments with Metasploit. Get the world's best penetration testing software now.

infosecmatter.com

Blogging and sharing knowledge about cyber security, writing howtos, tips and tricks about penetration testing, red teaming, but also defense. Raising security awareness.

sans.org

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.

hackingtutorials.org

Step-by-Step Hacking Tutorials about WiFi hacking, Kali Linux, Metasploit, exploits, ethical hacking, information security, malware analysis and scanning.

infosecinstitute.com

Role-based content to prepare for exams, certifications, or to train your entire workforce.

mitre.org

MITRE is a not-for-profit corporation committed to the public interest, operating federally funded R&D centers on behalf of U.S. government sponsors. MITRE's mission-driven teams are dedicated to solving problems for a safer world.

vuldb.com

Number one vulnerability management and threat intelligence platform documenting and explaining vulnerabilities since 1970.

hackthebox.eu

Where hackers level up! An online cybersecurity training platform allowing IT professionals to advance their ethical hacking skills and be part of a worldwide community. Join today and learn how to hack!

packetstormsecurity.com

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

hacktricks.xyz

Carlos Polop's Website

owasp.org

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.

tenable.com

Tenable® - The Exposure Management Company

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Enroll in the best cybersecurity courses online by EC-Council. Boost your career with one of the best cybersecurity courses and training. Get certified now!

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nmap.org

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

osboxes.org

Homepage of site that offers virtual machines (VDI & VMDK & VHD) for VirtualBox and VMware. Run VMs inside VirtualBox and VMware on any host.

vulmon.com

Vulmon is a vulnerability and exploit search engine with vulnerability intelligence features.

infosecwriteups.com

A collection of write-ups from the best hackers in the world on topics ranging from bug bounties and CTFs to vulnhub machines, hardware challenges and real life encounters. Subscribe to our weekly newsletter for the coolest infosec updates: https://weekly.infosecwriteups.com/.

wonderhowto.com

Wonder How To is your guide to free how to videos on the Web. Search, Browse and Discover the best how to videos across the web using the largest how to video index on the web. Watch the best online video instructions, tutorials, & How-Tos for free. Have your own how to videos? Submit them to share with the world.

linuxconfig.org

LinuxConfig.org

blackmoreops.com

blackMORE Ops - Learn one trick a day ….

pentestlab.blog

Offensive Techniques & Methodologies

kali.training

hackerone.com

HackerOne | #1 Trusted Security Platform and Hacker Program

vulners.com

Vulnerability database enriched with millions CVE, exploits, articles, varied tools and services for vulnerability management against cybersecurity threats

acrossecurity.com

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pentest-tools.com

Pentest-Tools.com is a cloud-based toolkit for offensive security testing, focused on web applications and network penetration testing.

nist.gov

National Institute of Standards and Technology

osstmm.org

shodan.io

Search Engine for the Internet of Things

recon.cx

RECON is a computer security conference being held in Montreal. The conference offers a single track of presentations over the span of three days. RECON also offers a variety of technical training courses that take place just before the conference dates.

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ubuntu.com

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

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netsparker.com

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bugcrowd.com

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yeahhub.com

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askubuntu.com

Q&A for Ubuntu users and developers

i9technologies.com

i9 Technologies, Albuquerque, New Mexico - Systems Integrators, Security, Information Technology Solutions

hak5.org

Hak5 — industry leading hacker tools & award winning hacking shows for red teams, pentesters, cyber security students and IT professionals. Creators of the WiFi Pineapple, USB Rubber Ducky & more. Home to an inclusive information security community. Established in 2005.

qualys.com

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

exploitbox.io

kalilinuxtutorials.com

Kali Linux tutorials is an independent platform that covers step by tutorials, advanced penetration testing, Ethical Hacking and network security tools.

acunetix.com

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.

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vulnhub.com

VulnHub provides materials allowing anyone to gain practical hands-on experience with digital security, computer applications and network administration tasks.

offsec.com

Build cyber workforce resilience with our unmatched skills development and hands-on learning platform and library.

securityonline.info

Securityonline is a huge security community. It is committed to the sharing of high-quality technical articles and safety reports, focusing on high-quality security and security incidents in the industry.

cyberciti.biz

Linux Tips, Hacks, Tutorials, And Ideas In Blog

taddong.com

hakin9.org

Featured Products SPACE CYBERSECURITY Cyber Warfare Methodologies and Case Studies Healthcare Cybersecurity

cxsecurity.com

CXSECURITY (Independent information about security) is a huge collection of information on data communications safety. Its main objective is to inform about errors in various applications.

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cobalt.io

Cobalt is modernizing traditional pentesting. We leverage global talent and a SaaS platform to deliver a better pentest via Pentest as a Service (PtaaS).

mmebvba.com

MME | Security Audits & Training

tryhackme.com

TryHackMe is a free online platform for learning cyber security, using hands-on exercises and labs, all through your browser!

reality.news

vmware.com

Run any app on any cloud on any device with a digital foundation built on VMware solutions for modern apps, multi-cloud, digital workspace, security & networking.

aircrack-ng.org

Aircrack-ng

tecmint.com

Tecmint - Linux Howtos, Tutorials, Guides, News, Tips and Tricks.

blackhat.com

Black Hat | Home

nakivo.com

A fast and affordable backup and disaster recovery for VMs, physical machines, cloud workloads and Microsoft 365. Trusted by 25,000+ companies worldwide.

gadgethacks.com

Gadget Hacks provides lifehacks for your smartphone. We aim to provide the most comprehensive smartphone guide on the web, going deeper than hardware specs into how software, be it the operating system, skins, mods, or apps make up the majority of the smartphone features people care about. We'll show you how to get more out of the device that never leaves your side, and help you choose which device you should upgrade to next.

hackertarget.com

28 Online Vulnerability Scanners & Network Tools | HackerTarget.com

linuxize.com

Linuxize is a Linux Sysadmin and DevOps blog that publishes articles and tutorials about server operations, new techniques and Linux security.

zsecurity.org

linuxhint.com

Linux Hint

netsec.ws

Ramblings of a NetSec addict

veracode.com

Veracode's mission is to ensure that software is secure from the start. With our platform you can continuously find and fix security flaws throughout the software development lifecycle. Veracode brings security and development teams together.

statisticshowto.com

A guide for topics in elementary and AP statistics. Includes calculators, tables and a forum.

pentesteracademy.com

sigmaaldrich.com

Home

elearnsecurity.com

Trusted by HR departments around the world, our certifications are scenario-based exams that prove your cyber security skills in the job market. Infosec careers are heating up and candidates are doing everything they can to stand out. Passing an eLearnSecurity certification shows potential employers that you have proven red, blue and purple team capabilities.

acs.org

Primary professional organization for chemists and related occupations.

ehacking.net

itsfoss.com

Making You a Better Linux User

debian.org

Debian -- The Universal Operating System

ubuntuforums.org

A help and support forum for Ubuntu Linux.

miloserdov.org

securitynewspaper.com

hacking-tutorial.com

ceos3c.com

hackers-arise.com

Blog | hackers-arise

darknet.org.uk

Darknet is your best source for the latest hacking tools, hacker news, cyber security best practices, ethical hacking & pen-testing.

giac.org

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.

securitytrails.com

SecurityTrails enables you to explore complete current and historical data for any internet assets. IP & DNS history, domain, SSL and Open Port intelligence made easy

parrotlinux.org

Parrot Security

netcraft.com

From early detection to takedown, Netcraft's comprehensive external threat intelligence and digital risk protection platform keep your organization and customers safe online.

comptia.org

Start or grow your career in IT with an IT certification from CompTIA. Find everything you need to get certified - from exploring certifications to training to taking your exam.

cobaltstrike.com

Cobalt Strike in an adversary simulation tool that can emulate the tactics and techniques of a quiet long-term embedded threat actor in an IT network using Beacon, a post-exploitation agent and covert channels.

linuxquestions.org

LinuxQuestions.org offers a free Linux forum where Linux newbies can ask questions and Linux experts can offer advice. Topics include security, installation, networking and much more.

sathisharthars.com

wireshark.org

Wireshark · Go Deep

darkoperator.com

base64decode.org

Decode from Base64 format or encode into it with various advanced options. Our site has an easy to use online tool to convert your data.

backtrack-linux.org

BackTrack Linux - Penetration Testing Distribution

balena.io

balena - The complete IoT fleet management platform

peerlyst.com

securityfocus.com

Provides security information to all members of the security community, from end users, security hobbyists and network administrators to security consultants, IT Managers, CIOs and CSOs.