Module 5 of 6 · Context
Keys, wallets and security
The mathematics of blockchains is strong. People are the weak point. This module explains, without naming products, how keys are managed and how scammers try to take them.
Lessons in this module
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5.1 What a wallet really is
9 min · Beginner
Lesson 5.1: why a crypto wallet stores keys rather than coins, and the conceptual difference between custodial and self-custody arrangements.
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5.2 Recovery phrases and backups
8 min · Beginner
Lesson 5.2: what a recovery (seed) phrase is, how it encodes keys, and the principles of keeping backups safe — explained conceptually.
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5.3 Scams and red flags
10 min · Beginner
Lesson 5.3: the most common crypto-related scams — impersonation, fake promises, phishing and "recovery" fraud — and how to recognise them.