Firefox Prepares To Mark All HTTP Sites 'Not Secure' After HTTPS Adoption Rises (bleepingcomputer.com)

An anonymous reader quotes a report from Bleeping Computer: The increased adoption of HTTPS among website operators will soon lead to browsers marking HTTP pages as "Not Secure" by default, and Mozilla is taking the first steps. The current Firefox Nightly Edition (version 59) includes a secret configuration option that when activated will show a visible visual indicator that the current page is not secure. In its current form, this visual indicator is a red line striking through a classic lock that's normally used to signal the presence of encrypted HTTPS pages. According to Let's Encrypt, 67% of web pages loaded by Firefox in November 2017 used HTTPS, compared to only 45% at the end of last year.

Comments

Servers on your LAN are probably Not Secure

[tepples]

HTTPS requires a certificate, and a certificate that requires a fully qualified domain name. The CA/Browser Forum's Baseline Requirements forbid issuing certificates in RFC 1918 private networks (such as 10/8 and 192.168/16) or the mDNS reserved domain (.local). This means everything on the average user's local area network will end up marked "Not Secure", such as the administration interface of the user's router, printer, or network attached storage (NAS) device.

The document "Deprecating Non-Secure HTTP" states that Mozilla is aware of this problem but fails to offer a solution:

Q. What about my home router? Or my printer?

The challenge here is not that these machines can’t do HTTPS, it’s that they’re not provisioned with a certificate. A lot of times, this is because the device doesn’t have a globally unique name, so it can’t be issued a certificate in the same way that a web site can. There is a legitimate need for better technology in this space, and we’re talking to some device vendors about how to improve the situation.

It should also be noted, though, that the gradual nature of our plan means that we have some time to work on this. As noted above, everything that works today will continue to work for a while, so we have some time to solve this problem.

Use HSTS

[tepples]

Changing the billions of http: links on billions of web pages to billions of other web pages, that's what.

If your HTTPS server sends the Strict-Transport-Security header for one request, the browser will automatically rewrite subsequent requests to http: scheme URLs on the same domain to use the https: scheme instead. If you enable this long-term for all subdomains, you can get the header "preloaded", or included with the browser itself so that even the first request gets rewritten. The HTTPS Everywhere extension by EFF is an additional source of preloads.

Re:If the signature itself is tampered with

[Dagger2]

Because it's open to MITM and passive snooping. There have been cases of networks inserting DDoS code into unencrypted webpages to recruit clients into attacking an unrelated site. (Or if you prefer, cases of networks inserting cryptocoin miners.) It's also possible to exploit security vulnerabilities in the client by injecting code into a plain-text connection, thus hiding the source of the exploit (and saving you the effort of tricking the client into visiting your own site).

Plain-text HTTP is just plain unsafe. That's why it should be branded as unsafe.