Confidentiality Of Email Clause Hijacked Email. My Email Is Sending Out Spam To Everyone In My Contact List. What Can I Do?

Hijacked email. My email is sending out spam to everyone in my contact list. What can I do? - confidentiality of email clause

Yahoo mail account (with my name on it) sends e-mails to everyone in my contact list. These are very sensitive to my personal contacts list, and I'm happy about privacy, confidentiality and the persistence affected by harmful viruses. What can we do to prevent this? These emails are not from me!