“When you use Signal, your data is stored in encrypted form on your devices. The only information that is stored on the Signal servers for each account is the phone number you registered with, the date and time you joined the service, and the date you last logged on.”
Ahem, and a list of contacts, they’ve improved since, but it used to be that this was a simple hash of the phone number which is obviously vulnerable to a very easily generated rainbow table.
I’m confused. Are you saying they still store contacts but with better encryption or that they no longer store contact information?