Damage caused by a cyberattack can be measured in billions of dollars, while its actual cost is rather low. According to the Positive Research center, anyone with less than 10,000 dollars is able to gain remote access to somebody else's SIM card, which means access to the subscriber's traffic, SMS, calls and location data. Twenty percent of SIM cards are vulnerable to such attacks. It is also possible to obtain a subscriber's confidential information by attacking his mobile carrier's equipment. An attack on a GSM cell can cost about 1,000 dollars. To hack a base station, an intruder might need only a PC and access to the SS7 network.