If you must look into the contents, do not open the file in a standard environment. Instead, follow these steps:
: A developer-side shorthand for versioning. 55._C_S_H_A__.zip
: Used in government or defense sectors to tag data originating from specific clearance zones. If you must look into the contents, do
: Use a tool like ExifTool to look at the "Create Date" or "Software" tags within the ZIP headers. 55._C_S_H_A__.zip