Crackers like to use phishing to spread their malicious code. And actually, if you take care with just some file extensions you can avoid these dangerous codes.
If you receive an e-mail with the extensions .cmd, .bat, .exe or .scr, don’t open it, even if it comes from a secure source. And, as email servers are blocking these attached files, crackers are using telephone promotions, your bank account and other current subjects to direct you to a malicious link where a virus is downloaded. They develop sites almost identical to the original sites, “clones”, where the cracker has total control over your acts. It’s really common send scraps to Orkut users with these links.
Most files available to download in these websites are those kind mentioned in the beginning: .cmd, .bat, .scr or .exe.
The .cmd and .bat files are used to execute scripts known as batch files, to automate tasks. Crackers use these kind of files to steal user data. The .scr are screen saver files, and most users trust this kind of files, but the virus will be activated when the screen saver is executed.The most known, and still most used as phishing is .exe. Users know how dangerous these files are, but, most of time, they don’t pay attention to the extension they are downloading.
The files mentioned are Trojans and keyloggers. Trojans open your machine to the cracker and Keyloggers record everything you type. So, can you imagine the damage to your personal data?
Now that you know these dangerous files, what to do to protect your data? it’s always a good idea to have a firewall and other prevention methods that can identify these links and extensions. And don’t think you will notice that your computer was infected. The cracker don’t want to be noticed, he will be hidden, and quiet, to get all information he wants.
Take care with those files and links, check the extension, don’t open files from unknown sources and don’t execute anything in your computer that you are not sure what is. It’s not that hard to be safe on line.