Glossary Technology & AI
Two-factor authentication
Requiring a second proof of identity beyond a password, such as a code from an app or a hardware key. It blocks the great majority of account takeovers.
More from the glossary
Short selling
Borrowing an asset, selling it, and hoping to buy it back cheaper. Losses are theoretically unlimited,…
Quantitative easing
A central bank creating money to buy bonds, pushing down longer-term interest rates when short-term rates…
Machine learning
Building software that improves at a task by finding patterns in data rather than by being…
Index
A measure of a slice of the market, such as the S&P 500 or the FTSE…