Answer:

1.) Million and Million of bytes personal data have been exposed on the internet is true but those are exposed because of people unawareness its properly mentioned on the site that if you agree then only proceed they ask for the permission but because of unawareness people normally don't read the document and checkmark on the box given use the personal data.

coming on the question of why there is still any faith at all on the internet.

Because using you are connected to the world whether it is in the term of news. The Internet provides a personalized experience like using banking service, railways and providing the recommendations which make to keep faith in the internet.

2.) The term hacking changed meaning over the years because hackers nowadays no only stell the data. But nowadays keep track of our behavior like our interest and all so that they can break our security outside the internet also. Nowadays hacker keeps track where the data packet to know the path. So that they easily monitor the end-user without letting them know.

3.) The most dangerous hacker tool is Metasploit, Wireshark, Nmap these tools can be used to break the security wall and gets all the security-related information from the system.

Metasploit: Provide security vulnerabilities.

Wireshark: Used for Packet Sniffing Usernames, Passwords and Images

Nmap: Used for searching O.S. which is operating on the remote host and to find open ports.