Sicherheit
8 cards from across every topic, each citing a source. Tap one to open it in the feed.
- An accident needs holes that happen to line up.
James Reason described safety systems around 1990 as a stack of cheese slices: each layer is a barrier, each hole a …
- Good websites never actually know your password.
Reputable services don't store your password but its hash: a fixed string that can't be reversed into the password. At …
- How a second factor makes stolen passwords worthless.
A password is something you know. A second factor is something you have, like your phone with an authenticator app, or …
- How to build an emergency fund before you invest.
Add up your fixed monthly costs: rent, food, insurance, transport. Multiply the total by three to six. That's your …
- How to check a banknote in three moves.
The ECB sums it up as FEEL, LOOK, TILT: feel the raised print you can sense with a fingertip. Look for the watermark …
- How your smoke detector sees smoke without having an eye.
Inside sits a dark chamber with an LED and a photodiode set at an angle to each other. In clean air the light beam …
- What happens to your money when your bank goes bust.
Across the entire EU, deposits are legally protected up to €100,000 per person per bank. If the bank fails, the …
- What the padlock in your address bar actually does.
With HTTPS, your browser and the website first exchange public keys and a certificate that vouches for the site's …