I would like to know the privacy aspects of this - does the text gets stored in the server? What about the "report false positive" button- is it entirely algori

I would like to know the privacy aspects of this - does the text gets stored in the server? What about the "report false positive" button- is it entirely algorithmic or actually goes to a human? If the latter, how much of the text is visible to him/her? Of course, I am not going to use it for anything confidential, but knowing how much privacy I can expect would be nice.