The type of attack that involves the hacker doing some research about you to make the email more convincing and personalized is called

Spear-phishing is the type of attack that involves the hacker doing some research about you and makes the email more convincing.

Explanation:

The hackers who use spear-phishing are out there trying to steal from others. They attempt to steal important data, money, and the security of others. These hackers employ methods that impersonate someone to trick their friends and acquaintances so that they are more willing to read the message and do what is asked.

the best way to learn how to declare a major is to talk to a admissions office.

107x106 is the answer