If your main concerns are security and privacy, there are many private blog advantages for you.
One private blog advantage is that spammers won’t be able to find you and leave ads in your comments section or in your email inbox.
Another private blog advantage is that you can feel free to share more personal information knowing that only the people you trust will be allowed to see it.
Of course the main advantage of a private blog is that you can rest assured in the safety of yourself, your family, and personal and sensitive information.