Security
Practical protection for wallets, keys, and transactions — phishing patterns, cold storage, contract-approval risk, and the habits that matter most before and after you hold real funds.
18 guides in this category, ordered from beginner to advanced.
Security guides
Crypto Security Basics
Practical, foundational security habits for protecting wallets, keys, and transactions.
6 min read · 13 related concepts
How to Recognize and Avoid Crypto Phishing
Practical patterns behind crypto phishing attempts, and habits that help you avoid falling for them.
6 min read · 14 related concepts
Seed Phrase Security Best Practices
Practical habits for storing and protecting a wallet seed phrase, and mistakes that put funds at real risk.
5 min read · 6 related concepts
Two-Factor Authentication for Crypto Accounts
Why 2FA matters for exchange accounts, and which methods offer stronger protection.
5 min read · 3 related concepts
What to Do If You've Been Scammed in Crypto
The realistic, honest steps to take right after a crypto scam — stopping further loss, what recovery is and isn't possible, and how to report it.
7 min read · 10 related concepts
What Happens If You Lose a Seed Phrase?
An honest answer about what's actually recoverable after losing a seed phrase, what genuinely changes the answer, and why prevention is the only reliable strategy.
6 min read · 9 related concepts
Recognizing Pig Butchering and Crypto Romance Scams
How a pig butchering scam actually unfolds over weeks or months, the warning signs at each stage, and why it's now one of the largest categories of reported crypto fraud.
7 min read · 6 related concepts
Recognizing Fake Hardware Wallet and Firmware Update Scams
How scammers target hardware-wallet owners specifically, through fake devices, fake support contact, and fake firmware updates.
5 min read · 3 related concepts
How to Recognize a Fake or Copycat Token Airdrop Scam
The patterns behind fake airdrop scams specifically, distinct from a legitimate project's real token distribution.
5 min read · 2 related concepts
Recognizing Rug Pulls and Exit Scams
Common warning signs of a project designed to take investors' funds and disappear.
6 min read · 12 related concepts
Protecting Against SIM Swap Attacks
How a SIM swap attack works, and practical steps to reduce your exposure to it.
5 min read · 2 related concepts
Planning for What Happens to Your Crypto After You're Gone
Why crypto inheritance needs deliberate planning that a will alone can't provide, and the main approaches people actually use.
7 min read · 7 related concepts
Risks of Giving an AI Agent Access to Your Crypto
The realistic failure modes of letting an autonomous agent hold spending authority, beyond the obvious "what if it's hacked" concern.
6 min read · 4 related concepts
What to Do Immediately After Signing a Malicious Approval
The specific, time-sensitive first steps if you suspect you just signed a draining token approval -- distinct from general post-scam recovery.
5 min read · 4 related concepts
Understanding Quantum Computing Risk to Your Bitcoin Holdings
What the quantum-computing threat to Bitcoin actually means for your own holdings today, and the practical step that reduces exposure.
5 min read · 3 related concepts
Understanding Proof of Personhood: What It Solves and Its Privacy Trade-offs
The real problem proof-of-personhood systems try to solve -- distinguishing a unique human from a bot or sock-puppet account -- and the genuine privacy trade-offs involved.
5 min read · 2 related concepts
How to Verify a Smart Contract Before Interacting
Practical steps to reduce risk before connecting a wallet or depositing funds into a smart contract.
6 min read · 8 related concepts
How to Evaluate a Smart Contract Audit
What to actually look for in a security audit report, beyond simply confirming one exists.
6 min read · 5 related concepts
Key terms in this category
Two-Factor Authentication
Read the Two-Factor Authentication glossary definition
Private Key
Read the Private Key glossary definition
Seed Phrase
Read the Seed Phrase glossary definition
Wallet
Read the Wallet glossary definition
Phishing
Read the Phishing glossary definition
Cold Storage
Read the Cold Storage glossary definition
Clipboard Hijacking
Read the Clipboard Hijacking glossary definition
Supply Chain Attack (Crypto)
Read the Supply Chain Attack (Crypto) glossary definition
Burner Wallet
Read the Burner Wallet glossary definition
Social Engineering
Read the Social Engineering glossary definition
SIM Swap
Read the SIM Swap glossary definition
Rug Pull
Read the Rug Pull glossary definition
Pig Butchering Scam
Read the Pig Butchering Scam glossary definition
Man-in-the-Middle Attack
Read the Man-in-the-Middle Attack glossary definition
Ice Phishing
Read the Ice Phishing glossary definition
Typosquatting
Read the Typosquatting glossary definition
Advance-Fee Scam
Read the Advance-Fee Scam glossary definition
Recovery Scam
Read the Recovery Scam glossary definition
Social Recovery Wallet
Read the Social Recovery Wallet glossary definition
Exit Scam
Read the Exit Scam glossary definition
Wash Trading
Read the Wash Trading glossary definition
Dusting Attack
Read the Dusting Attack glossary definition
Address Poisoning
Read the Address Poisoning glossary definition
Honeypot Scam
Read the Honeypot Scam glossary definition
Ponzi Scheme
Read the Ponzi Scheme glossary definition
Pyramid Scheme
Read the Pyramid Scheme glossary definition
Dead Man's Switch
Read the Dead Man's Switch glossary definition
Secret Sharing
Read the Secret Sharing glossary definition
Custody Risk
Read the Custody Risk glossary definition
UTXO
Read the UTXO glossary definition
Sybil Attack
Read the Sybil Attack glossary definition
Bytecode
Read the Bytecode glossary definition
Front-Running
Read the Front-Running glossary definition
Replay Attack
Read the Replay Attack glossary definition
Oracle Manipulation
Read the Oracle Manipulation glossary definition
Formal Verification
Read the Formal Verification glossary definition
Access Control (Smart Contract)
Read the Access Control (Smart Contract) glossary definition
Reentrancy Attack
Read the Reentrancy Attack glossary definition
Zero-Day Exploit
Read the Zero-Day Exploit glossary definition
Bug Bounty
Read the Bug Bounty glossary definition