• Main Menu
  • Security

    • One-Time Pad

      One-Time Pad

      A one-time pad is a form of encryption that is difficult to decipher or crack if one is not the intended recipient. If done correctly, the strength of encryption of plaintext can almost be impossible to break in a useful timeframe. The system takes each character from plaintext and uses modular addition with a character

    • Digital Certificates

      Digital Certificates

      Digital certificates are the equivalent of a driver’s license, a marriage license, or any other form of identity. The only difference is that a digital certificate is used in conjunction with a public key encryption system. Digital certificates are electronic files that simply work as an online passport. Digital certificates are issued by a third

    • How to Change a Yahoo Password

      How to Change a Yahoo Password

      To change a Yahoo Password, visit Yahoo: Change Password. Changing a Yahoo password causes all the passwords on Yahoo’s personalized services to change. These personalized services include: Yahoo! Mail Yahoo! Messenger Yahoo! Chat My Yahoo! Yahoo! Finance The instructions to change a Yahoo password will only work if the user knows his/her current Yahoo password.

    • Adware

      Adware

      Adware is a close relative of spyware. Adware is software that is installed on your computer to show you advertisements. Adware can slow your PC by using RAM and CPU cycles. Adware can also slow your Internet connection by using bandwidth to retrieve advertisements. In addition, adware can increase the instability of your system because

    • How to Decrypt Cisco Passwords

      How to Decrypt Cisco Passwords

      If  ‘service password-encryption’ is not configured on the Cisco device, simply read the plain text passwords from the configuration file. If ‘service password-encryption’ is configured on the Cisco device, most of the passwords are encrypted with a weak encryption algorithm (Type 7) that is easy to decrypt. Once there is access to the Cisco configuration

    • How to Recover a Zip Password

      How to Recover a Zip Password

      PKZip utilizes a proprietary stream cipher that is vulnerable to a known plaintext attack, as Eli Biham and Paul C. Kocher describes in A Known Plaintext Attack on the PKZIP Stream Cipher. In ZIP Attacks with Reduced Known-Plaintext, Michael Stay describes an improved known plaintext attack that works against files that non-PKZip zip programs such

    • Substitution and Transposition Ciphers

      Substitution and Transposition Ciphers

      Substitution and transposition ciphers are two categories of ciphers used in classical cryptography. Substitution and transposition differ in how chunks of the message are handled by the encryption process. Substitution ciphers Substitution ciphers encrypt plaintext by changing the plaintext one piece at a time. The Caesar Cipher was an early substitution cipher. In the Caesar

    • RSA (Rivest, Shamir, and Adleman)

      RSA (Rivest, Shamir, and Adleman)

      RSA, which stands for Rivest, Shamir, and Adleman, is a security algorithm used in digital cryptography. RSA differs from older symmetric algorithms because it has the ability of allowing digital signing as well as advanced encryption for online commerce systems and high-profile institutions. RSA was one of the first major advancements in digital cryptography but

    • How to Remove Spyware Manually

      How to Remove Spyware Manually

      Manually removing spyware is not an easy task. Usually the best course of action to remove spyware from your computer is to download and install a free spyware removal tool that will do this job for you. However, sometimes a problem arises in which the spyware removal program is unable to delete the spyware files

    • How to Uninstall Hotbar

      How to Uninstall Hotbar

      The HotBar add-on is an add-on program for Internet Explorer that personalizes email, as well as the  functionality and visual appearance of browser applications. While performing the functions noted above, HotBar also makes multiple connections with “hotbar.com” and “reports.shopperreports.com”. Hotbar also monitors phrases the user enters into search engines and reports them to third parties

    118 queries in 0.301 seconds.