Firefox and other browsers · Research guidance. Instructions are based on publisher guidance; a UK IPTV account was not tested on this platform.
Read what the warning establishes
Mozilla explicitly says its insecure-password warning does not mean a password has already been stolen. It warns about entering a login on a page that is not using HTTPS. That distinction matters: a risk indication deserves attention, but it should not be reported as a confirmed historical event the browser did not establish.
Stop the intended private-data action
Do not enter additional secrets while the route is unclear. Check the intended address and use the legitimate publisher’s supported secure login page. A site that loads over ordinary HTTP is not made suitable for private account information simply because its logo looks familiar or because the username box is visible.
Separate a hypothesis from evidence
If you have an independent unexpected sign-in notice or an account change you did not make, preserve that evidence and follow the account publisher’s recovery process. If all you have is the connection warning, describe exactly that. The two situations can justify different next steps and should not be merged into an invented claim of a confirmed breach.
Ask support a precise question
Provide the warning text, affected hostname and time, with credentials and token-bearing URLs removed. Ask for the current supported secure route. This gives the operator something concrete to investigate and avoids circulating a working account secret in the very message intended to ask about privacy.
Questions, answered
Does the warning prove theft already happened?
No. Mozilla explicitly says it does not.
Should it still be taken seriously?
Yes. Resolve the secure login route before sending private information.