Some 'Web 3.0' developments that may be of interest to hackers.
blockchain
Filecoin and Arweave vs. copyright enforcers
Contemporary decentralized file storage seems like an unrealized threat to copyright enforcers and brand-protectors.
Introducing the Open Ethereum Security Course
Already know application security? Here's a new course for learning about Ethereum and smart contract auditing. It's free, it's open.
I don't care if you blockchain
IT people that don't believe in blockchain can still work with it (and probably should).