Signal is down since ~1 hour
mobile.twitter.com
mobile.twitter.com
https://www.reddit.com/r/signal/comments/824cci/signal_down/
You were faster than me. This is a real bummer for me since I use Signal daily. First thought was that my signal installation was broken (since I had some problems with it yesterday).
Back to the signal topic my first thought was that they just didn't have time to react yet since it's before 4am in the US, but they changed the DNS entry of the signal gateway so I guess it's maybe a DDOS? First people are asking for a service page https://github.com/signalapp/Signal-Android/issues/7461
Anyway it's up again. Hopefully there will be a writeup
EDIT: there is speculation it's Chinese DDoS since today is day 1 of the first session of China's 13th National People's Congress? The very Congress meeting that is going to remove Xi's 2 term limit (dictator for life).
back to WhatsApp and gotta try open source Wire which doesn't require phone, though i will still keep Signal as SMS client
in the end i have found there zero contacts although i know at least one of my contacts use it, tried also Telegram, found many of my Signal/WhatsApp contacts are there as well and same with Allo, tried also Skype lite bit horrible experience and again same contacts as my other combo minus 1-2, so all in all seem pointless to leave from WhatsApp and Signal could be replaced by regular SMS app