How can you help stop spam?

A virus can spread to another computer by

Why shouldn't a user click unsubscribe links from spam messages?

Which of these techniques would be effective in helping to prevent phishing attacks by scammers?

What is an example of a "419" Scam

A client asks you to fix his computer because it has ransomware on it. He says he sees a message as soon as he loads windows, and cannot do anything else. What is the best way to fix this computer without losing any of his data?

Which is the disadvantages of verification?

Which symmetric encryption algorithms is/are supported by S/MIME?

Which is threats to Email Security?

What is IMAP?

What is the function of the Reverse DNS Look up Technique in identifying spam mails?