So there's no denying that you have been hacked. So you realized you gave away your credit card number in a suspicious-looking website. So, do you know what to do next? You should not waste time in sending a warning to your bank right away. You should inform them to block all incoming purchases that could be traced back from your credit card number. Indeed, any person should at least have one byte of computer security knowledge. Computer security awareness is a very vital issue we should not take for granted because we need to protect our assets from unauthorized access, use, alteration, or destruction.

In case of hacker attacks, one helpful tip would be to keep your cool and do not panic. You should develop an effective reaction to the malicious action that the hacker has done. Earlier detection should be the better than late ones. You should formulate a countermeasure plan that could come in handy during a computer security crisis. In this case, you should know how not to allow the hacker to further damage your system or how to prevent the hacker from exploiting more information from your system.

We should always remember that hackers cannot just wreak havoc directly into your computers. There are potential dangers lurking in e-mail attachments that have already been much-publicized and are already familiar to the general population. E-mail attachments provide a convenient way to send nontext information over a text-only system. Attachments can contain word-processing files, spreadsheets, databases, images, or virtually any other information you can imagine. Although these files are harmless, they may contain macro viruses inside the loaded files that can damage computers and reveal confidential information when those files are opened. A great example of this is the ILOVEYOU virus, which searched for other users' passwords and forwarded that information to the original perpetrator. Within days, the virus spread to 40 million computers in more than 20 countries and caused an estimated $9 billion in damages. Most of the monetary losses is lost worker productivity because the infection damaged all the data in those computers.
Indeed, communication channels, in general, and the Internet, in particular, are especially vulnerable to attacks. The Internet is a vast network and because no control exists over the nodes through which Internet traffic passes. Thus, the information sent through the Internet is vulnerable to unauthorized disclosure. This can lead to disclosure of private information, alteration of critical business documents and theft or loss of important business messages. Putting the security of our interest is a foremost priority and we need educate ourselves and people around us about the essentials of computer security so that no one in our league would compromise the safety of your computers.