Choose the scenario that uses social engineering.

1. Bob pretends to be the pizza delivery guy by wearing the outfit and even carrying a pizza box. He then uses it to convince the security guard at the front desk to let him into the building.

2. Bob scans a company's network looking for vulnerabilities. When he finds one he sends an exploit that gives him remote access.

3. Bob creates a malware program to send to an organization that will give him remote access.

4. Bob finds a blind spot in a company's camera surveillance system. He uses that to gain access to the building.