[Satan]

I don't know if opening it in photoshop is grounds for a fraud case. For all they know, you could have adjusted the brightness or something.

It is reasonable enough doubt to push an investigation for many Loss Prevention divisions of corporate businesses.

Also, clearing your EXIF data is more suspicious than leaving it be.

This is the result of a photoshop image being stripped of EXIF data:



This is the EXIF from my Phone camera, which for some "methods", provide a similar type image.



The absence of all this data would be more suspicious to me than just having a photoshop tag.