2 ms·
What is up with these b.s posts about open or public wifi being safe this week? A few days ago there was a twitter thread by a security person at a hotel claim
by badrabbit 7y ago
What is up with these b.s posts about open or public wifi being safe this week? A few days ago there was a twitter thread by a security person at a hotel claimig their open wifi is safe.
I won't detail all the many harms you can suffer (or the threats that will readily cause you harm),but let me state just one argument related to eff's silly (and dangerously harmfull ) statement here:
1) when you type in a domain in your navigation bar, your browser attempts to connect to unencrypted http(port 80)
2) if (big if!) The site supports https it will do an http 301 redirect to the https version of the site.
3) An attacker needs to intercept just one such redirect to have an opportunity for credential theft or content injection (downloads,exploits,etc...)
3) your browser does indeed remember these redirects going forward,which is great.
4) Except if you configured your browser to forget all history. Or if you happen to remember a site you visited a while ago (perhaps on a different device) and just typed it in to navigate. Or if you typed in something to search but your browser navigates to it,or many other opportunities for pwnage!
5) you don't care about that? Well attackers are happy to setup a malicious captive portal(captive portal checks are plain http for all browsers I know of) and use that directly or to social engineer installation of an app you "need" to connect (oh,mitmproxy has a nifty captive portal like page you can customize to install a CA cert on the device for TLS interception)
I won't even begin to talk about at least half a dozen additional classes of MITM attacks that can be used, even with wpa3 and client isolation! What you have to understand is that vulns that would normally be low severity are amplified in this sort of a network, due to the sheer magnitude of threat exposure.
I can't complain about most people being ignorant to good infosec practices(we have to understand+educate) but man this stings! The eff makes one of my favorite extensions HTTPSEverywhere, how can they post this? It takes a long time to educate people about good security practices.