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    • 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

    • How Do I Get Rid of About Blank?

      How Do I Get Rid of About Blank?

      About: Blank is a homepage hijacker that severely slows down your computer and shows popup advertisements randomly while using one’s Internet browser. While it does not do actual damage to the computer, it does limit what can be done on the computer because, at times, the About: Blank could be using as high as 80%

    • Test Credit Card Numbers

      Test Credit Card Numbers

      A test credit card number is the card number of a fake live credit account provided by a credit card company in order for retailers to verify that their card readers are working properly and that they are compatible with a specific credit card brand. Test credit card numbers are read like real credit card

    • Bootable Antivirus

      Bootable Antivirus

      Bootable antivirus software refers to any type of antivirus program that can be booted from a CD, DVD, or removable hard drive and can detect viruses on a user’s computer without having to startup Windows. Bootable antivirus software can be very important when a virus takes over a computer or prevents regular antivirus software from

    • How to Determine if a Credit Card Number is Valid

      How to Determine if a Credit Card Number is Valid

      Credit cards use the Luhn Check Digit Algorithm. The main purpose of the Luhn Check Digit Algorithm is to catch data entry errors, but it does double duty here as a weak security tool. The Luhn Check Digit Algorithm For a card with an even number of digits, double every odd numbered digit (1st digit,

    • Why People Write Computer Viruses?

      Why People Write Computer Viruses?

      We hear about new computer viruses all the time. What is the motivation behind developing computer viruses and watching them wreak havoc on the Internet? Fact Gathering Many viruses raid your documents including your email address book for information that can be used to make business contacts. This data is assembled into a database that

    • How to Remove Malware

      How to Remove Malware

      New computer malware is discovered daily on the Internet. As computer security companies successfully combat emerging threats, computer virus authors grow more creative in designing attacks that take advantage of the many computer users that have not taken appropriate security measures or updated anti-virus software to defend against new attacks. Once a computer is infected,

    • Cisco Router Default Passwords

      Cisco Router Default Passwords

      Cisco routers are routers that Cisco, a leading provider in network devices, produces. Cisco has millions of customers worldwide and produces thousands of products, including routers, modems, and network storage devices that allow the user to connect to the Internet. Cisco also produces USB based Internet cards and distributes service plans that a wide variety

    • How MS Access Encryption Works

      How MS Access Encryption Works

      Microsoft Access had no encryption capability until the release of Microsoft Access 2007. With the MS Access 2007 release, encryption is now available. Encryption Requirements To encrypt your access database you must use a new database format released with MS Access 2007, the ACCDB format. Differences between the original MDB format and the new ACCDB

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