You best set up a page that just says, "as long as this page is up, we have NOT been served a National Security Letter from the FBI".
Because it's going to contain a gag-order that prevents you from even talking to your lawyer. So probably want to ask them ahead of time what to do when you get the letter.
> The Patriot Reauthorization Act of 2005 modified some of the gag order provisions. An NSL recipient may now disclose the fact that they received an NSL in connection with seeking legal advice or complying with the NSL. NSL recipients were also given the ability to challenge, in federal court, compliance with the NSL and the gag order provisions.
That's a good idea. But seriously, you can't even tell your lawyer to defend yourself against something like that? How is that even remotely constitutional? Does the US Congress pass laws that violate the Constitution on purpose these days?
ACLU challenged it in two cases and that aspect was ruled unconstitutional in both. The law was changed in 2005 to explicitly state that the gag order does not stop you from talking to lawyers about the NSL.
