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Join us for TechTogether Miami’s first hackathon for people of marginalized genders.

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Join us for a day of inspiring workshops that will prepare you for your first hackathon.

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MITRE ATT&CK (attack)

MITRE Shield (defense)

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Hacker101 is a free class for web security. Whether you're a programmer with an interest in bug bounties or a seasoned security professional, Hacker101 has something to teach you.

Start Hacking!

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Hacker101 is a free class for web security. Whether you're a programmer with an interest in bug bounties or a seasoned security professional, Hacker101 has something to teach you. Start Hacking!

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We help companies develop the strongest tech teams around. We help candidates sharpen their tech skills and pursue job opportunities.

Sign up Request demo

Over 40% of developers worldwide and 3,000 companies use HackerRank

It's not a pipeline problem. It's a spotlight problem.

Tech hiring needs a reset. From prepping for jobs and practicing coding to running a world-class technical interview, give developers the tools they need to showcase their skills, passion, and potential.

Explore and expand your skills.

Every idea has a first line of code. Prep for jobs and sharpen your skills alongside a global community of developers. Access the content you need to develop new skills - and land the job you've dreamed of.
Sign up and practice

Join the movement. Screen on skills.

Leave the binary tree behind.

Build coding questions using our library of dev-friendly content that challenges them to solve the problems they'd actually tackle on the job.
Start free trial

Focus on what really matters: the code.

Build skills-based coding tests with tech problems a developer would encounter on the job - and hire the team behind your next big idea.
Request a demo

Identify top contenders

Identify top contenders and invite them to meet your team using data-driven decisions that help level the playing field for developers everywhere.
Learn more

:: Technical interviews ::

Interview like it's 2024

Every company is a tech company.We're here to help 'em all.

More than 3,000 tech teams, representing all industries and from countries around the world, trust HackerRank to connect with developers and add cutting-edge skills to their teams.

That includes 25% of the Fortune 100 - and that moonshot startup that just came out of stealth.

We're discovering new ways of attracting candidates to the organization. By using HackerRank, we're actually improving the tech image of UBS.

HackerRank has actually allowed us to look for diamonds in the rough that our old process
didn't give us the time
or resources to look for.

We're promoting our jobs to a much wider audience and allowing candidates to be selected for interviews purely based on the merit of their coding abilities.

We cut down hiring time by months, which was huge for us. We owe that to HackerRank.

HackerRank is a critical piece of our candidate's experience, and hitting the right tone is just as important as identifying good candidates.

HackerRank has been a huge help in making it easy to assess the skills of all the candidates we
interview. Without it, the process of scaling our engineering team would have been very cumbersome.

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HackerRank - Online Coding Tests and Technical Interviews

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HackerRank is the market-leading coding test and interview solution for hiring developers. Start hiring at the pace of innovation!

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Image Metadata Viewer

Barcode Reader

QR Code Scanner

Shodan

Censys

CentralOps.net

whois.domaintools

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Exercises in every lesson

TryHackMe goes way beyond textbooks and focuses on fun interactive lessons that make you put theory into practice. You'll get an immersive learning experience with network simulations, intentionally vulnerable technology based on real world examples and more.

Beginner Friendly

New to security? No problem! We have learning paths that will teach you the fundamental cyber security skills, which will help set you up to land a job in cyber security.

Start Hacking Instantly

We give you all the tools you need to start learning. Access a machine with the security tools you'll need through the browser, and starting learning from anywhere at any time. All you need is an internet connection!

Real-world Networks

Take your cyber security training to the next stage by learning to attack and defend computer networks similar to those used by various organisations today.

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

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CyberChef

Cryptii

Base64

Binary to ASCII

Hex to ASCII

Railfence

Caesar Cipher

Atbash Cipher

Vigenere Cipher

Morse Code Translator

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CyberChef

Cryptii

MD5 Hash

SHA1 Hash

SHA256 Hash

Password Hash Cracker [1]

Password Hash Cracker [2]

Malware Hash Registry

Hash Analyzer

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Intro to Cyber Security Specialization

Intro to Cybersecurity Tools & Cyber Attacks

Intro to Cybersecurity & Risk Management Specialization

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IT Fundamentals for Cybersecurity Specialization

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Python for Cybersecurity Specialization

Secure Coding Practices Specialization

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VirusTotal

App.Any.Run

AlienVault

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NCL, a community where cybersecurity is a passion!

The National Cyber League (NCL) is the most inclusive, performance-based, learning-centered collegiate cybersecurity competition today!

The NCL, powered by Cyber Skyline, enables students to prepare and test themselves against practical cybersecurity challenges that they will likely face in the workforce, such as identifying hackers from forensic data, pentesting and auditing vulnerable websites, recovering from ransomware attacks, and much more!

Open to U.S. high school and college students, the NCL is a community and virtual training ground that allow students to develop and demonstrate their technical cybersecurity skills, helping students bridge the gap from curriculum to career!

NCL Diversity and Inclusion Statement

The National Cyber League is focused on empowering young people in order to help end the incessant cycle of poverty, prejudice, and injustice whose impact after generations of neglect is playing out in our streets today. Our Player Ambassador team's primary objective is to promote diversity and inclusion in our industry. In times like this, we cannot stand idle. We cannot remain silent. We cannot offer kind words without action.

As a small step forward, NCL is awarding scholarships covering participation in the NCL competition to students from Historically Black Colleges and Universities. NCL also works with faculty to ensure that the cybersecurity pathway is enhanced for all their students. NCL is dedicated to making a positive impact in the Cybersecurity community now and as we move forward.

Learn about playing, coaching, and the Competition.

Select a Resource page based on your role.

Student players, find out how to register and compete! Access a wealth of resources.

Advance to the NCL Competition, powered by Cyber Skyline.

Faculty and coaches, find out how you can best guide your student players. Access the Coach's Guide.

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NCL, a community where cybersecurity is a passion! The National Cyber League (NCL) is the most inclusive, performance-based, learning-centered collegiate cybersecurity competition today! The NCL, powered by Cyber Skyline, enables students to prepare and test themselves against practical cybersecurity challenges that they will likely face in the workforce, such as identifying hackers from forensic data, pentesting and auditing vulnerable websites, recovering from ransomware attacks, and much more!

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This is a two-week long timed CTF competition. Challenges increase in difficulty as players progress. All are welcome to join, but this CTF is recommended for players with some programming knowledge. Players with no previous programming or CTF experience should start with our noncompetitive picoGym challenges.

Timeline

Sign up for a picoCTF.org account at anytime.

Feb 1, 2023 - registration opens

March 14, 2023 12:00 PM EST - CTF opens

March 28, 2023 3:00 PM EST - CTF closes

Eligibility

Open to everyone:

Existing or new accounts at picoCTF.org

Age 13+

Prizes and awards may have requirements. See competition rules for details.

picoCTF would like to thank our sponsors for providing funds for continued development.

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This is a two-week long timed CTF competition. Challenges increase in difficulty as players progress. All are welcome to join, but this CTF is recommended for players with some programming knowledge. Players with no previous programming or CTF experience should start with our noncompetitive picoGym challenges.

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Join a dynamically growing hacking community and take your cybersecurity skills to the next level through the most captivating, gamified, hands-on training experience!

The home of guided and exploitative learning, offering everything that is required to take your training seriously and kickstart a career in cybersecurity.
Ready to learn how to hack?

Everything Around Hacking

A portfolio of cybersecurity training services and products, constantly enriched to help our users augment their skills in the most engaging and rewarding way possible.

Capture The Flag

Hacking challenges that will enable you to compete with others and advance your skills. From Jeopardy-style to Full Pwn and AD, we have it all!

Battlegrounds

Real-time multiplayer hacking games! Invite friends, choose any of the different Game Modes, form a team, and join the battlefield!

InfoSec Careers

Looking for a new job in cybersecurity? Visit Careers. Set up your preferences, see all the available job openings, apply, nail the interview, get hired.

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Join a dynamically growing hacking community and take your cybersecurity skills to the next level through the most captivating, gamified, hands-on training experience! The home of guided and exploitative learning, offering everything that is required to take your training seriously and kickstart a career in cybersecurity. Ready to learn how to hack?

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StegOnline

Steganography Resources

Stegseek

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CTF Field Guide

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Malware Traffic Analysis (Exercises & Tutorials)

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Windows and Linux Terminals & Command Lines

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Windows and Linux Terminals & Command Lines

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The U.S. Air Force is the world's preeminent force in air, space and cyberspace. We maintain that distinction by maintaining our objective of global vigilance, reach and power and remaining true to our vision statement: The World's Greatest Air Force-Powered by Airmen, Fueled by Innovation.

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The U.S. Air Force is the world's preeminent force in air, space and cyberspace. We maintain that distinction by maintaining our objective of global vigilance, reach and power and remaining true to our vision statement: The World's Greatest Air Force-Powered by Airmen, Fueled by Innovation.

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BlackRock is the world's largest asset manager & they love supporting hackers. This season, we're teaming up to run fun coding challenges at MLH hackathons all across Europe. Put your skills to the test by solving these fun puzzles!

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BlackRock is the world's largest asset manager & they love supporting hackers. This season, we're teaming up to run fun coding challenges at MLH hackathons all across Europe. Put your skills to the test by solving these fun puzzles!

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LOLBAS (Windows Binaries)

GTFOBins (Unix Binaries)

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Here are all of our recent Holiday Hack Challenges, as well as links to the official answers and winning entries. Past challenges are fun learning opportunities, and will always be available!

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Here are all of our recent Holiday Hack Challenges, as well as links to the official answers and winning entries. Past challenges are fun learning opportunities, and will always be available!