NEW: Hackers are trying to steal Signal users' online backups in a new wave of attacks.
The hackers are pretending to be Signal Support and asking targets to share their backup's Recovery Key. This would be the first step in an attack that also requires attackers to take over the victims' accounts.
A new hacking campaign is trying to trick Signal users to give up their secret recovery key, which can be used to access online backups containing past messages.
