For example, the file extension.txt has an extension of .txt. This extension allows the operating system to know what type of file it is and what program to run when you double-click on it.

Malware and viruses can hide almost anywhere; one of the most common places is the very files you use every day, hidden among those familiar file extensions.

You can create a file without a File Type Extension in Windows 11/10 by carefully following the steps laid down in this post.

We show you how to open files with no extension in Windows 11/10. You can try these tricks or use one of these free software or online tools.

Need to look at invisible files and show hidden file extensions in Windows? Here's how to reveal them.

When it comes to converting file extensions on your iPhone, don't worry about downloading a third-party app when you can make the changes yourself.

Table listing every Windows file type that has or can be used maliciously Download this Microsoft Word document table listing over a 100 file types/extensions that can be used maliciously ...

Once added to the list of blocked file extensions, users won't be able to download any of these types of files from their inboxes -- unless the Outlook/Exchange administrator has whitelisted a ...

Microsoft has shared more information on what types of malicious embedded files OneNote will soon block to defend users against ongoing phishing attacks pushing malware.