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    • How to Remove all Personal Files from Windows

      How to Remove all Personal Files from Windows

      Over the last decade, millions of people have kept more and more personal information on their computers. From credit card numbers to sensitive emails and word documents, a vast amount of personal files are on almost any home computer. While keeping personal and sensitive information on a home computer is relatively safe, if you plan

    • Steganography

      Steganography has gained a significant amount of press over the past several years when the technique hit the press as a possible method that many of the terrorists involved with the 9/11 attacks used to plan the operation. Similar to the use of encryption, steganography techniques have become one of the basic methods that organizations

    • X.509

      X.509

      X.509 is an ITU-T (ITU Telecommunication Standardization Sector) standard for PKI (Public Key Infrastructure) in cryptography, which, amongst many other things, defines specific formats for PKC (Public Key Certificates) and the algorithm that verifies a given certificate path is valid under a give PKI (called the certification path validation algorithm). X.509 History X.509 began in

    • How a Magnetic Card Reader Works

      How a Magnetic Card Reader Works

      A magnetic card is a rectangular plastic object (credit/debit card) that contains either a magnetic object embedded within the card or a magnetic stripe on the card’s exterior. A magnetic card can store any form of digital data. The electronic devices designed to read stored information from a magnetic card do so either when someone

    • Diffie-Hellman

      Diffie-Hellman

      The Diffie-Hellman key exchange was first published by Whitfield Diffie and Martin Hellman in 1976 and is a popular method for exchanging cryptographic keys. The method is one of the most straight-forward examples of key exchanges implemented in the cryptology field and allows two individuals or parties that have not worked together before to establish

    • What Are Activation Codes?

      What Are Activation Codes?

      Every time you sign up for a new service, change a password, or do anything that has to do with personal information online, there are activation codes. These codes are sent to your email address, and you have to click on them to activate the account or confirm the change. Most websites out there use

    • Computer Worms

      Computer Worms

      Computer worms are programs that reproduce, execute independently, and travel across network connections. The key difference between a virus and worm is the manner in which each reproduces and spreads. A virus is dependent upon the host file or boot sector and the transfer of files between computers to spread, whereas a computer worm can

    • How to Erase Browser History

      How to Erase Browser History

      Erasing browser history clears the record of what web sites the user visited over a period of time. This can help to protect privacy by preventing others from monitoring what web sites the user has been visiting. Erasing Internet Explorer’s Browser History By default, Internet Explorer keeps browser history for 20 days. To erase browser

    • How Do I Change my MSN Password?

      How Do I Change my MSN Password?

      MSN is an ISP (Internet Service Provider) which is owned and operated by Microsoft Corporation. In addition, Microsoft uses the MSN brand on a number of web sites which they operate. How to Change Your MSN Password The way to change your MSN password is to change your Microsoft Passport password. Changing your Microsoft Passport

    • What is an Email Spoofing?

      What is an Email Spoofing?

      Email spoofing occurs when an email is sent from one person or program that makes it appear as though it is legitimately from another. For example, user1@youremail.com creates an email, but when it is sent the “From” field has another person/organization’s email address such as fake@somecompany.com. When the person who receives the email clicks the

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