If you are a computer fanatic, especially if you are online, then you must have known about anitivirus - it's importance - more or less, especially when you are using Windows OS. Have you ever thought of a better AV software or even a good one? How about let's test your AV software if it really is working as it is supposed to be and so you know you are protected - at least.
Now, here's what we are going to do. Test your antivirus software with this simple code. You will create your own file so no need to download anything. The code is secure and its not going to infect your computer in whatever way. It is a standard text developed by the European Institute for Computer Anti-virus Research - EICAR. Every AV is programed to load this file as a virus. Otherwise, that means your AV ain't what you are looking for and you better find a better one.
Here's How To Do It
1. Open a notepad
2. Copy and paste this code
X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*3. The text should be in one line
4. Save file as checkantivirus.com
5. Make sure the file is saved with a .com extension
6. Click Save and wait
After a few seconds after saving this file, your antivirus software should pop a message out referring to this file that it is infected with virus which would try to delete/remove the file or ask what your action will be.
If your antivirus software will not detect this file as a virus, a program will appear as DOS window with this text EICAR-STANDARD-ANTIVIRUS-TEST-FILE. If this is the case, then you are not fully protected - you know what to do next. I guess, it's not that bad since plenty of replacements to choose from.. LOL!
Source: Tutorials R Us: Test Your Anti-Virus