Security Issue: Account Owner can see all opportunities

Hi all,

I have one user who has one security role, which gives him the privilege to see only his own accounts and own opportunities. I checked his access rights in MS CRM and noticed that he can see only his accounts, which is ok but he can see all opportunitites including those where he is not the owner. Actually I thought he would not see the opportunitites from someone else. So am I wrong or I am missing something.

Thanks for any comments.