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2. Password - Wikipedia

   en.wikipedia.org/wiki/Password

   Password. A password, sometimes called a passcode, is secret data, typically a string of characters, usually used to confirm a user's identity. Traditionally, passwords were expected to be memorized, [1] but the large number of password-protected services that a typical individual accesses can make memorization of unique passwords for each ...

3. Non-player character - Wikipedia

   en.wikipedia.org/wiki/Non-player_character

   The term "non-player character" is also used in video games to describe entities not under the direct control of a player. The term carries a connotation that the character is not hostile towards players; hostile characters are referred to as enemies, mobs, or creeps. NPC behavior in computer games is usually scripted and automatic, triggered ...

4. CAPTCHA - Wikipedia

   en.wikipedia.org/wiki/Captcha

   A CAPTCHA ( / ˈkæp.tʃə / KAP-chə) is a type of challenge–response test used in computing to determine whether the user is human in order to deter bot attacks and spam. [1] The term was coined in 2003 by Luis von Ahn, Manuel Blum, Nicholas J. Hopper, and John Langford. [2]

5. Time-based one-time password - Wikipedia

   en.wikipedia.org/wiki/Time-based_One-Time_Password

   Time-based one-time password. Time-based one-time password ( TOTP) is a computer algorithm that generates a one-time password (OTP) using the current time as a source of uniqueness. As an extension of the HMAC-based one-time password algorithm (HOTP), it has been adopted as Internet Engineering Task Force (IETF) standard RFC 6238. [1] TOTP is ...

6. List of the most common passwords - Wikipedia

   en.wikipedia.org/wiki/List_of_the_most_common...

   Since 2011, the firm has published the list based on data examined from millions of passwords leaked in data breaches, mostly in North America and Western Europe, over each year. In the 2016 edition, the 25 most common passwords made up more than 10% of the surveyed passwords, with the most common password of 2016, "123456", making up 4%. [5]

7. Permissive action link - Wikipedia

   en.wikipedia.org/wiki/Permissive_Action_Link

   A permissive action link ( PAL) is an access control security device for nuclear weapons. Its purpose is to prevent unauthorized arming or detonation of a nuclear weapon. [1] The United States Department of Defense definition is: A device included in or attached to a nuclear weapon system to preclude arming and/or launching until the insertion ...