Crypto Alpha

A permit2 signature phishing scam drains a wallet with one gasless click. Here is the sign-or-reject memo I run at every signature request, in plain terms.

A hot wallet vs cold wallet comparison built like a checking-and-savings split, with the exact allocation rule I use to shrink my online-exposed balance.

How DeFi vaults work, decoded by a non-developer: deposit, shares, strategy, yield, and the trust stack behind one deposit button — plus what I check first.

An autopsy of a crypto wallet drainer scam: how DaaS kits, spoofed sites, and malicious signatures empty a wallet, plus a layered defense a non-coder can run.

A non-affiliate hardware wallet comparison and self-custody setup checklist for 2026: score devices against your own threat model, then run the steps I ran.

Account abstraction smart contract wallets explained for people who already own a normal wallet — the real UX gains, real gas costs, and a keep-both framework.

An address poisoning scam plants a look-alike address in your history so your next copy-paste sends real funds to a stranger. Here’s the map and the fix.

I thought disconnecting my wallet revoked access. It didn’t. Here’s how token approvals drain wallets, and a framework for which ones to revoke first.

A non-developer’s decision framework for AI agent wallet security, built around the Grok/Bankr drain where no key was stolen — the agent was talked into it.

How intent-based DEXs work, for non-developers: solver competition, batch vs Dutch auctions, MEV claims, and what you trust when you sign an intent.