Wallets, Custody & Security · 07 Oct · 6 min read
What Is Two-Factor Authentication?
Two-factor authentication adds a second proof, such as an app code or security key, to your password. How 2FA works, which types are safest, how to set it up.
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Learn Crypto
Crypto education and research.
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What Is a Wallet Drainer?
A wallet drainer is a phishing kit that tricks you into signing a transaction or permission that empties your wallet. How drainers work and how to defend.
What Is a SIM Swap Attack and How Do You Prevent It?
A SIM swap moves your phone number to a criminal's SIM so they receive your texts and 2FA codes. How the attack works, the warning signs and how to prevent it.
Seed Phrase Mistakes That Lead to Lost Funds
Run this seed phrase check: digital copies, typing it into sites, who has seen it, single copies, untested backups, passphrases, split words and inheritance.
How to Back Up a Seed Phrase Safely
Write your seed phrase offline, check every word, choose paper or metal, store copies in separate places, test recovery and decide who can reach it if needed.
What Is a Seed Phrase?
A seed phrase is 12 or 24 words that can restore every key in a crypto wallet. How it works, why it is the most important secret you hold, how to keep it safe.
What Is a Multisig Wallet?
A multisig wallet needs several keys to approve a transaction, such as 2 of 3. How multisig works, who uses it, its trade-offs and what the Bybit hack showed.
What Happened to Mt. Gox?
Mt. Gox handled most bitcoin trading before losing about 850,000 BTC in 2014. The timeline from collapse to repayments, why it failed and what it changed.
How to Set Up a Hardware Wallet Safely
Buy from the maker, check the device, set it up yourself, write the seed phrase offline, verify addresses on the screen and test a small transfer before more.
How to Recover a Hacked Crypto Account
What to do in the first hour after a crypto account or wallet is hacked: lock things down, move funds, contact the platform, report it and avoid recovery scams.
What Happened When FTX Collapsed?
FTX went from a $32 billion exchange to bankruptcy in days in November 2022 after customer funds were used by Alameda. The timeline, trial and repayments.
Security Myths That Leave Crypto Accounts Exposed
Six crypto security myths, from "SMS 2FA is enough" to "a hardware wallet makes me safe," what is actually true and the habit that fixes each one.