One of the default settings in Windows is pretty dangerous.
Microsoft's default setting in their File Manager is to "HIDE the file extension of known types". While this sounds harmless, it's actually one of the most common sources of computer viruses, because it makes it hard to tell what kind of file you are actually opening.
Every file has an extension, and by now, most of us recognize the most common ones, such as:
.JPG for pictures
.PDF for printable documents
XLS and .XLSX for Microsoft Excel spreadsheets
.DOC and .DOCX for Microsoft Word files
.EXE for executable programs
Since those are "known types", Microsoft's default behavior is to "Hide" the extension. So a file called "FunnyCat.JPG" is shown simply as "FunnyCat". While that sounds harmless on the surf... [More]
Continue...A Hidden Windows Security Problem...