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2. Password strength - Wikipedia

   en.wikipedia.org/wiki/Password_strength

   Password strength is a measure of the effectiveness of a password against guessing or brute-force attacks. In its usual form, it estimates how many trials an attacker who does not have direct access to the password would need, on average, to guess it correctly.

3. Tips to create a strong password - AOL Help

   help.aol.com/.../tips-to-create-a-strong-password

   Create a strong password. • Use unique words - Don't use obvious words like "password". • Have 12 or more characters - Longer passwords are more secure. • Avoid sequences or repeated characters - Don't use adjacent characters on your keyboard (QWERTY). • Use a different password for each site - Otherwise, if someone acquires one ...

4. Strong passwords more important than ever, experts warn - AOL

   www.aol.com/strong-passwords-more-important-ever...

   New research, published to mark World Password Day, suggests only one in five people in the UK can identify a secure password over a risky one. Strong passwords more important than ever, experts ...

5. Brute-force attack - Wikipedia

   en.wikipedia.org/wiki/Brute-force_attack

   In cryptography, a brute-force attack consists of an attacker submitting many passwords or passphrases with the hope of eventually guessing correctly. The attacker systematically checks all possible passwords and passphrases until the correct one is found. Alternatively, the attacker can attempt to guess the key which is typically created from ...

6. One-time password - Wikipedia

   en.wikipedia.org/wiki/One-time_password

   A one-time password ( OTP ), also known as a one-time PIN, one-time authorization code ( OTAC) or dynamic password, is a password that is valid for only one login session or transaction, on a computer system or other digital device. OTPs avoid several shortcomings that are associated with traditional (static) password-based authentication; a ...

7. HMAC-based one-time password - Wikipedia

   en.wikipedia.org/wiki/HMAC-based_one-time_password

   HMAC-based one-time password. HMAC-based one-time password ( HOTP) is a one-time password (OTP) algorithm based on HMAC. It is a cornerstone of the Initiative for Open Authentication (OATH). HOTP was published as an informational IETF RFC 4226 in December 2005, documenting the algorithm along with a Java implementation.