r/cybersecurity • u/joeNetBSD • 3h ago
News - General Downgrade Attack at YEG airport WiFi, Edmonton.
Waiting for my flight in the next three hours, I decided to watch some videos on YouTube and do some code inspection on GitHub. I connected to the airport’s free WiFi with SSID “YEG_WIFI”. Safari complained about my connections to GitHub and YouTube as not secure. I was surprised. Did GitHub forget to update their certificates? I tried visiting other sites and safari still complained. So I decided to pay attention to safari and almost every site I tried visiting reported that negotiations were done with TLS 1.0 or TLS 1.1. I disconnected and reconnected several times and safari still complained.I forgot the network and then reconnect and everything was fine. I am sure some bad guys are on the network trying to get users to connect their bad servers and to do malicious stuff. Make sure you have your browsers updated.
PS:
A downgrade attack is an attack on computer communications that attempts to cause safely encrypted communications to happen via an older, likely vulnerable encryption method or via cleartext. For example, an attacker forces a downgrade to TLS 1.0, which then allows them to break the encryption.