97 Alternatives to hacker101.com

Explore a diverse selection of alternative sites and similar platforms to hacker101.com. Discover comparable services and features, and expand your online options. Upgrade your browsing experience with our comprehensive collection of alternatives.

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hackerone.com

HackerOne | #1 Trusted Security Platform and Hacker Program

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/.

tryhackme.com

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

bugcrowd.com

Bugcrowd teams with elite security researchers to reduce risk & improve security ROI through our bug bounty, pen testing, & vulnerability disclosure programs.

portswigger.net

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

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!

hacktricks.xyz

Carlos Polop's Website

vulnhub.com

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

hackthebox.com

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!

hacksplaining.com

Hacksplaining: Security Training for Developers

exploit-db.com

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

synack.com

Synack - Premier Security Testing Platform

ctftime.org

Capture The Flag, CTF teams, CTF ratings, CTF archive, CTF writeups

offensive-security.com

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

pentesteracademy.com

hackingarticles.in

Raj Chandel's Blog

pkey.in

CÒÅÄÓÔ×Á ÏÂÅÓÐÅÞÅÎÉÑ ÉÎÆÏÒÍÁÃÉÏÎÎÏÊ ÂÅÚÏÐÁÓÎÏÓÔÉ ÏÔ Private Key Project - ËÏÍÐÌÅËÓÎÁÑ ÓÉÓÔÅÍÁ ÚÁÝÉÔÙ ÄÁÎÎÙÈ ÐÒÅÄÏÓÔÁ×ÌÑÀÝÁÑ ÎÁÂÏÒ ÐÒÏÇÒÁÍÍÎÏ-ÁÎÁÌÉÔÉÞÅÓËÉÈ ÓÒÅÄÓÔ× ÄÌÑ ÔÅÈÎÉÞÅÓËÏÇÏ ÏÂÅÓÐÅÞÅÎÉÑ ËÏÍÐØÀÔÅÒÎÏÊ É ÉÎÆÏÒÍÁÃÉÏÎÎÏÊ ÂÅÚÏÐÁÓÔÎÏÓÔÉ.

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.

intigriti.com

Europe's leading bug bounty platform and penetration testing services provider.

cvedetails.com

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

pentesterlab.com

PentesterLab: Learn Web Penetration Testing: The Right Way

thedutchhacker.com

Cybersecurity enthusiast - The Dutch Hacker

leeadams.dev

pentester.land

Hi! Welcome to my little parcel of the Internet.<br>I am Mariem Elgharbi, an entrepreneur and hacker passionate about offensive security and sharing knowledge that makes your life as bug hunters and pentesters easier.<br>On this site, you will find...

hackthissite.org

HackThisSite.org is a free, safe and legal training ground for hackers to test and expand their ethical hacking skills with challenges, CTFs, and more.

kumaratuljaiswal.in

A blog about Hacking Tips and Tricks Technology Computer Internet Programming, Technology News etc

stationx.net

Station X - The Cyber Security Company

vuldb.com

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

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.

packetstormsecurity.com

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

netsparker.com

Get accurate, automated application security testing that scales like no other solution. Secure 1000s of web assets with less manual effort. Reduce your risk with the only…

electronicsreference.com

Learn electronics with our easy to follow tutorials. From the basics all the way up to complex projects like analog and digital circuits.

rapid7.com

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

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.

eccouncil.org

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!

autopsy.com

Autopsy® is the premier end-to-end open source digital forensics platform. Built by Basis Technology with the core features you expect in commercial forensic tools, Autopsy is a fast, thorough, and efficient hard drive investigation solution that evolves with your needs.

cybersecurity-help.cz

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.

htb-cloud.com

vulmon.com

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

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.

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).

tenable.com

Tenable® - The Exposure Management Company

fthcyber.com

BECOME A GREAT H4CK3R

cybrary.it

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.

ringzer0ctf.com

Home - RingZer0 Online CTF

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.

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.

ctf365.com

pentestlab.blog

Offensive Techniques & Methodologies

index-of.es

kali.org

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

nmap.org

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

bugbountyhunter.com

BugBountyHunter is a training platform created by bug bounty hunter zseano designed to help you learn all about web application vulnerabilities and how get involved in bug bounties. Begin participating from the comfort of your own home.

infosecinstitute.com

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

assetnote.io

pentest-tools.com

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

openbugbounty.org

Report a vulnerability or start a free bug bounty program via Open Bug Bounty vulnerability disclosure platform.

picoctf.com

picoCTF is a free computer security education program with original content built on a capture-the-flag framework created by security and privacy experts at Carnegie Mellon University.

crt.sh

Free CT Log Certificate Search Tool from Sectigo (formerly Comodo CA)

shodan.io

Search Engine for the Internet of Things

icsi.co.uk

ICSI,UK (International CyberSecurity Institute)

aldeid.com

Ce portail propose des articles sur la sécurité informatique sous Windows et Linux.

ctfd.io

CTFd : The Easiest Capture The Flag Platform

raw.pm

testerting.science

vulners.com

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

magicinc.org

Home - Magic

cybersecuritychallenge.org.uk

neuralegion.com

NeuraLegion - NEW generation AI powered Application Security Testing. Find the OWASP Top 10 and your 0days - with NO False Positives. Full automation with SDLC Integration. Find SQLi, XSS, and more!

sweepatic.com

corben.io

infosec write-ups and ramblings

ringzer0team.com

Home - RingZer0 Online CTF

pwnable.kr

hackertarget.com

28 Online Vulnerability Scanners & Network Tools | HackerTarget.com

openctf.com

ctf101.org

ctflearn.com

Home - CTFlearn - CTF Practice - CTF Problems - CTF Challenges

hackeronestatus.com

nobbd.de

Der Security-Blog von Denis Werner.

securitybreached.org

Security Breached Blog - Security Breached | Latest Cyber News, Exploits, Tools & Tutorials | Securitybreached.org

nathan.sx

Words from a hacker who wants to make the world a better place.

codegrazer.com

CodeGrazer is the newly formed pentest firm based in Leeds, UK, offering security services to protect private companies internal infrastructure and web services with quick turnaround and high quality standards.

worth.systems

pwning.re

comsecglobal.com

nixu.com

Nixu is a cybersecurity services company that has been shaping the future through cybersecurity for over three decades. We make cyberspace a secure place and help our clients ensure business resilience with peace of mind.

peritusinfosec.com

bugbountynotes.com

aadityapurani.com

hackedu.com

apsdehal.in

echoctf.com

echoCTF is a pioneer computer security framework, a Cyber Range developed by Echothrust Solutions for running security related competitions (CTFs) and trainings on real IT infrastructure.

cybertalents.com

CyberTalents is a global platform where cybersecurity talents can learn, practice, compete get hired, & get ranked according to their skills through CTF.

essentialexploit.com

sothis.tech

cloudunder.io