The federal tax filing deadline for most Americans is April 15, 2026. State tax deadlines may differ, so check your local ...

New installations of Windows hide all file extensions, except for Windows components, that would appear in Explorer or an application dialog box that displays file names. File extensions are ...

Computer viruses sometimes masquerade as harmless e-mail attachments. The fastest way to spot the interlopers is by their file extension–the letters (usually three) following the final period in the ...

Normally, if you change a file’s extension in Windows, it doesn’t do anything positive. It just makes the file open in the wrong programs that can’t decode what’s inside. However, [PortalRunner] has ...

In the past, email servers accepted all file attachments, allowing viruses to be executed by unwary recipients who clicked on them. It was not uncommon to get messages such as "click this - coolest ...