Hackers have exploited the Signaling System #7 international telecommunications signaling protocol as part of a two-stage attack designed to drain money from online bank accounts in Germany. The attacks successfully targeted online bank account holders in Germany by using call-forwarding features built into the SS7 protocol. O2-Telefonica tells Sddeutsche Zeitung that it blocked the foreign telephony provider attackers used and that German customers are now no longer at risk from these types of attacks. Security experts say it’s no surprise hackers have exploited SS7 features to steal money.”]