Flash loans often come up in security incident postmortems. What exactly are they?
One detail: flash loans let users borrow and repay within the same transaction, without collateral.
Flash loans can work without collateral because of transaction atomicity: the entire transaction either succeeds or is rolled back, so the borrowed funds can't be taken away without being repaid.
Remembering this is more useful than memorizing a bunch of jargon. Don't rush into action just because everyone else is buying.
The lending protocol Aave, associated with $AAVE , offers flash loans.