Hacking mobile phones via SS7 is still up to date. Now even your bank account is vulnerable as well
SS7 vulnerability allows attackers to drain bank accounts | TechTarget
What is TCAP? - Cellusys
SS7 (C7) Protocol Analyzer
Jolly Tech SS7-PRE Scan Station Premier Edition Software
Signaling Firewall | Products | Mobileum
Whatsapp Hack Using SS7 Attack | Using SS7 Attack, Whatsapp accounts can be Hacked regardless of its end-to-end encryption. | By Blackphone SA | Facebook
Advanced Rogue Systems Exploiting the SS7 Network | AdaptiveMobile