For ordinary souls, this encryption would take days and months to decode a sentence or a complete message.
Ditto with another secure messaging service called Telegram.
SS7 is vulnerable to hacking and this has been known since 2008.
Researchers created a tool (SnoopSnitch) that can warn when certainSS7 attacksoccur against phone and detect IMSI-catchers.
Once complete, the attacker now controls the account, including the ability to send and receive messages.
See how easily you canhack WhatsAppand Telegram by fooling the connection into believing you are the victim.
source: www.techworm.net