Computer Safety Tips

Computer Safety Tips


        What is the appeal of free email services?

        Many service providers offer free email accounts (e.g., Yahoo!, Hotmail, Gmail). These email  services typically provide you with a browser interface to access your mail. In addition to the monetary savings, these services often offer other benefits:
  • accessibility - Because you can access your account(s) from any computer, these services are useful if you cannot be near your computer or are in the process of relocating and do not have an ISP. Even if you are able to access your ISP-based email account remotely, being able to rely on a free email account is ideal if you are using a public computer or a shared wireless hot spot and are concerned about exposing the details of your primary account.
  • competitive features - With so many of these service providers competing for users, they now offer additional features such as large amounts of storage, spam filtering, virus protection, and enhanced fonts and graphics.
  • additional capabilities - It is becoming more common for service providers to package additional software or services (e.g., instant messaging) with their free email accounts to attract customers.
Free email accounts are also effective tools for reducing the amount of spam you receive at your primary email address. Instead of submitting your primary address when shopping online, requesting services, or participating in online forums, you can set up a free secondary address to use (see Reducing Spam for more information).

       Why do online shoppers have to take special precautions? The internet offers a convenience that is not available from any other shopping outlet. From the comfort of your home, you can search for items from countless vendors, compare prices with a few simple mouse clicks, and make purchases without waiting in line. However, the internet is also convenient for attackers, giving them multiple ways to access the personal and financial information of unsuspecting shoppers. Attackers who are able to obtain this information may use it for their own financial gain, either by making purchases themselves or by selling the information to someone else.
How do attackers target online shoppers? 
What is file sharing? File sharing involves using technology that allows internet users to share files that are housed on their individual computers. Peer-to-peer (P2P) applications, such as those used to share music files, are some of the most common forms of file-sharing technology. However, P2P applications introduce security risks that may put your information or your computer in jeopardy. What risks does file-sharing technology introduce?
How do you know your computer is infected?
Unfortunately, there is no particular way to identify that your computer has been infected with malicious code. Some infections may completely destroy files and shut down your computer, while others may only subtly affect your computer's normal operations. Be aware of any unusual or unexpected behaviors. If you are running anti-virus software, it may alert you that it has found malicious code on your computer. The anti-virus software may be able to clean the malicious code automatically, but if it can't, you will need to take additional steps. 
What can you do if you are infected? 

System Affected Point of Sale Systems Overview Point of Sale Systems When consumers purchase goods or services from a retailer, the transaction is processed through what are commonly referred to as Point of Sale (POS) systems. POS systems consist of the hardware (e.g. the equipment used to swipe a credit or debit card and the computer or mobile device attached to it) as well as the software that tells the hardware what to do with the information it captures. When consumers use a credit or debit card at a POS system, the information stored on the magnetic stripe of the card is collected and processed by the attached computer or device. The data stored on the magnetic stripe is referred to as Track 1 and Track 2 data. Track 1 data is information associated with the actual account; it includes items such as the cardholder’s name as well as the account number. Track 2 data contains information such as the credit card number and expiration date.
What is mean by DOS(Denial Of Service) or DDOS(Distributed Denial Of Service) Attacks? denial-of-service (DoS) or distributed denial-of-service (DDoS) attack is an attempt to make a machine or network resource unavailable to its intended users. Although the means to carry out, motives for, and targets of a DoS attack may vary, it generally consists of efforts to temporarily or indefinitely interrupt or suspend services of a host connected to the Internet. As clarification, DDoS (Distributed Denial of Service) attacks are sent by two or more persons, or bots. (See botnet) DoS (Denial of Service) attacks are sent by one person or system.
What is a distributed denial-of-service (DDoS) attack? Know more about Safety Tips From DOS 

Session Hijacking Tips

Session Hijacking How it happens Tips for it and how to avoid it Session hijacking sometimes called as cookie hijacking. If hackers hack your computer then he/she easily see the cookies on your computer in that cookies your username and password is stored and hacker can easily decode it.
How TCP session hijacking is done? Saftey Tips about it.
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