How do I get rid of spam pop ups on yahoo messenger from elsyshark?

Mary Kenny: How do I get rid of spam pop ups on yahoo messenger from elsyshark?
Each time I try to begin an email or look at my emails a pop up /spam message from elsyshark comes up. How do I stop this very annoying break through on my yahoo mail site?

Answers and Views:

Answer by Riki
Click messenger top left in the messenger window scroll down click preferences then scroll and click ignore list. In the next window you will see where to add people to your ignore list or you could check ignore anyone not on my friend’s list. then click o.k.