🛡️ Building a Mini DeFi Bank with a couple of security upgrades.

Was using CEI, but I layered in:

✅ ReentrancyGuard (to block recursive withdraws)

✅ Pausable (for emergency stops)

✅ Ownable (so only admin controls pause/unpause)

✅ Custom modifiers + events for clean traceability


Got stuck at first importing Ownable — forgot that newer OZ versions require initialOwner in the constructor. Easy fix once I caught it.

Security isn’t optional.
Cooldown logic + interest counter drops tomorrow.

#solidity #defi #openzeppelin #smartcontracts