For example, a login dialog box on an OS or web-site may not perform error-checking or data-validation, and thus assume/expect the user to enter only appropriate data. These instructions often take the form of some sort of user input. Malware writers would disassemble a program to examine its source-code and look for certain parts that had poor data- and error-handling which they could exploit. Later, more advanced exploits came along. It exploited the limited display of filenames of email clients to pull off its trick.

This was not only social-engineering (tricking the user), but also an early exploit. exe', the user sees what looks like a video and runs it and gets infected.

For example, an email client may only display the first dozen or so characters of attachments, so by giving a file a false extension, then padding it with spaces as in 'FunnyAnimals.avi. jpg in order to trick the user into thinking it is a media file and run it. A popular trick would be to rename an executable to include other extensions like. Later, Internet worms started using social-engineering to trick people into running viruses. In the past, only executable (i.e., “runnable”) files would be viruses. As such, it cannot be a virus in its own right, but it can indeed contain a virus. avi file is a video, and therefore is not executable, so the operating system can/will not run the file.

How to open avi files mega