Answer: b) POS(Point of sale) attack
Step-by-step explanation:
POS attack or malware is the attacking software which focuses on attacking point of sale of authentic user.It aims to extract sensitive information like credit card number, pin, debit card number etc. that is used for payment.
According to the question,POS attack can be taken over by major attacks like social media hack, mobile computing threats etc because of the upgrading technologies .
Other options are incorrect because social media, persistent threat are huge threat and attacking measures that can occur in future of cyber crime in bulk.Thus, the correct option is option(b).