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  2. Password strength - Wikipedia

    en.wikipedia.org/wiki/Password_strength

    Systems that use passwords for authentication must have some way to check any password entered to gain access. If the valid passwords are simply stored in a system file or database, an attacker who gains sufficient access to the system will obtain all user passwords, giving the attacker access to all accounts on the attacked system and possibly other systems where users employ the same or ...

  3. Wikipedia:10,000 most common passwords - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:10,000_most...

    Usually, passwords are not tried one-by-one against a system's secure server online; instead, a hacker might manage to gain access to a shadowed password file protected by a one-way encryption algorithm. They would then test each entry in a file like this to see whether its encrypted form matches what the server has on record.

  4. Sign extension - Wikipedia

    en.wikipedia.org/wiki/Sign_extension

    In a move or convert operation, zero extension refers to setting the high bits of the destination to zero, rather than setting them to a copy of the most significant bit of the source. If the source of the operation is an unsigned number, then zero extension is usually the correct way to move it to a larger field while preserving its numeric ...

  5. Locked out of your email? Here's how to change and recover ...

    www.aol.com/news/change-gmail-password-heres...

    If you know your current password, Google advises to follow these steps: Select "Security" in your Google Account to access your password Log in to your Google account here .

  6. List of SMTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SMTP_server_return...

    A "Basic Status Code" SMTP reply consists of a three digit number (transmitted as three numeric characters) followed by some text. The number is for use by automata (e.g., email clients) to determine what state to enter next; the text ("Text Part") is for the human user. The first digit denotes whether the response is good, bad, or incomplete:

  7. Have I Been Pwned? - Wikipedia

    en.wikipedia.org/wiki/Have_I_Been_Pwned?

    This protocol was implemented as a public API in Hunt's service and is now consumed by multiple websites and services including password managers [12] [13] and browser extensions. [14] [15] This approach was later replicated by Google's Password Checkup feature. [16] [17] [18]

  8. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    The Microsoft extension code indicated when Windows Parental Controls are turned on and are blocking access to the requested webpage. [36] 498 Invalid Token (Esri) Returned by ArcGIS for Server. Code 498 indicates an expired or otherwise invalid token. [37] 499 Token Required (Esri) Returned by ArcGIS for Server. Code 499 indicates that a token ...

  9. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    In the table below, the column "ISO 8859-1" shows how the file signature appears when interpreted as text in the common ISO 8859-1 encoding, with unprintable characters represented as the control code abbreviation or symbol, or codepage 1252 character where available, or a box otherwise. In some cases the space character is shown as ␠.