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Foundations: Security

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Security

Apr 11, 2026

What Is a Software Supply-Chain Attack?

Learn what a software supply-chain attack is, how it spreads through trusted build and update paths, and which controls reduce the risk.

23 min read

Security

Mar 21, 2026

What Is 2FA (Two-Factor Authentication)?

Learn what 2FA is, how it works, why it stops many password attacks, and why phishing-resistant methods like passkeys are stronger than SMS or OTP codes.

23 min read

Security

Mar 21, 2026

What is Smart Contract Risk?

Learn what smart contract risk is, why blockchain code is uniquely exposed, how exploits happen, and which controls reduce loss, lockup, and compromise.

26 min read

Security

Mar 21, 2026

What Is Social Engineering?

Learn what social engineering is, how it works, why phishing and wallet-signing scams succeed, and which controls actually reduce the risk.

25 min read

Security

Mar 21, 2026

What is Transaction Simulation?

Learn what transaction simulation is, how it works on blockchain systems, why wallets use it for security, and where its guarantees break down.

26 min read

Security

Mar 21, 2026

What is a Re-Entrancy Attack?

Learn what a re-entrancy attack is, how callback-based control flow breaks smart contract assumptions, and how CEI, guards, and pull payments help.

25 min read

Security

Mar 21, 2026

What is a Replay Attack?

Learn what a replay attack is, how it works, and how nonces, timestamps, session binding, genesis hashes, and chain IDs stop message reuse.

26 min read

Security

Mar 21, 2026

What Is a Rug Pull?

Learn what a rug pull is in crypto, how it works mechanically, the main attack paths, and which controls actually reduce rug-pull risk.

23 min read

Security

Mar 21, 2026

What is a Honeypot Token?

Learn what a honeypot token is, how it blocks selling through smart-contract logic, how detection works, and why balances can hide trapped value.

23 min read

Security

Mar 21, 2026

What Is Phishing?

Learn what phishing is, how it works, why it succeeds, and which controls - from MFA to clear signing - actually reduce phishing risk.

25 min read

Security

Mar 21, 2026

What is Bug Bounty?

Learn what a bug bounty is, why organizations use it, how bug bounty programs work, and where they fit among disclosure, audits, and security controls.

24 min read

Security

Mar 21, 2026

What is a Flash Loan Attack?

Learn what a flash loan attack is, how atomic borrowing enables DeFi exploits, and why oracle, pricing, and accounting design usually fail first.

23 min read