The victims are the people being deprived of their legal protections.
Not everyone agrees which information should be protected but sending information can be a form of harm. If I break into your bank, find all your financial transactions, and post it on Facebook, I have harmed you.
Courts imposing gag orders over criminal or civil matters is a critical protection, and attempting to violate those gag orders is harm. The specific victims aren’t known, but they intend for there to be victims.