Executable Files extension

An executable file is a kind of file that is used to perform various functions or operations on a computer. That is to say, executable file is a format that the computer can directly execute. Unlike source files, executable files cannot be read by human. To transform a source file into an executable file, you need to pass it through a compiler or assembler. And unlike data files, executable files cannot generally be read because it has been compiled.

Never execute executable attachments received in unsolicited e-mail. Just because that your virus scanner doesn't flag it does not guarantee that it is safe; it could mean that the virus is newer than your virus data file. Just because that it apparently came from a trusted friend doesn't mean that it's safe; it could mean that your friend's computer was infected without his/her knowledge, or it could mean that your friend's address was forged by a third-party sender.