Security and Privacy

Protect digital assets and privacy. Learn the principles of self-custody, zero-knowledge proofs (ZKPs), smart contract auditing, threat vector mitigation, and hardware wallets.


Start Here

New to Security & Privacy? Start with these to get your footing.


Learn Security & Privacy by what you want to do

Whether you're learning the basics or ready to go deeper, here's Security & Privacy organized around your goals.


Explore Security & Privacy across The Block

Live market prices, plus the latest Security & Privacy research and news — everything happening right now.


Get Certified

Turn your knowledge into a credential. Structured crypto courses, built with Campus.

All Courses
How Ethereum Works
60 min course
Campus

State, Transactions, Gas, Smart Contracts, and Layer 1 Trade-offs


Browse all Security & Privacy explainers

Every Security & Privacy topic covered, from Beginner to Advanced.