Medium posts from Harry (@409h) collected and made available to you.Check them out below.
Check out the most comprehensive list of blockchain and smart contract focused capture the flag games and bounties available where $$$ is up for grabs. https://www.cryptodefense.io/battle-grounds/
Very happy to make this addition to the cryptodefense group and please stay tuned as we continue to add content and work on the site! Thanks!