Mathematics of secure communication. Play Cryptography trivia solo to sharpen your knowledge, or challenge a friend head-to-head in Trivia Tango — every question comes with an explanation so you learn as you play.
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When you see a padlock icon in your browser's address bar, it indicates the website is using this secure protocol to protect your data.
This type of secret phrase or word is required to unlock an encrypted file or log into a secure account.
Before sending private information online, your computer scrambles it using this process, making it unreadable to anyone who intercepts it.
The scrambled, unreadable result you get after applying encryption to a message is known by this term.
In cryptography, this piece of secret information is used to both lock and unlock encrypted messages.
A website's digital identity is verified by this electronic document, ensuring you're connecting to the legitimate site.
Hackers who try to crack codes and break into systems without permission are often called by this color-themed name.
This type of message appears to come from a trusted source but is actually designed to trick you into revealing personal information.