Did Not Connect: Potential Security Issue Firefox detected a potential security threat and did not continue to nrega.nic.in because this website requires a secure connection. What can you do about it? nrega.nic.in has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site. Probably nothing, since it’s likely there’s a problem with the site itself.