Will you take the challenge?

These fun, technical puzzles will put your skills to the test & help you develop new ones.

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BlackRock Coding Challenges

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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USAF Cybersecurity Challenge

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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Elastic Security Challenge

Elastic builds real-time, scalable enterprise search, observability, and security solutions on a single technology stack that can be deployed anywhere. Use Elastic's SIEM to discover attacks in this fun MLH Localhost Workshop.