While the term "virus" can be used to refer to any malicious software, there are many different types of viruses, each of which performs a specific task and requires a distinct method of removing it and reversing the damage it’s done. Keyloggers and Trojans, for example, are both viruses but they’re very different. Keyloggers usually hide themselves in the user's files or programs and record information the user inputs into the computer, such as bank account data or social networking content. Trojans typically pretend to be beneficial software, such as antivirus software, and display false information to get the user to buy something or perform some other ill-intentioned task.