brainfart- what is this image called?

For the life of me I cannot remember what it is called or what it looks like exactly- but many journalist/whistleblower sources had an image or block of text that was essentially stating

“if you see this, we have not been compromised/forced to give info to the government or other sources”

I know I didn’t just conjure this in my mind but I’m struggling on finding the right search terms lol

block called compromised cybersecurity government info journalist life search terms text what is whistleblower