How to hide a category from "home" and "single pages"

Im looking for a plugin that helps me hide a post (from a category) that i publish on my main page and from my single pages.
So if i publish a post i dont want anyone to be able to find it UNLESS they have the direct url to it.

Note: i do NOT want the users to be able by accident to enter the blog post either by using the next / prev button on my blog. I have tested a plugin advanced-category-excluder that works great: it hides the post (category) from the main page, but people can still access the post if they are in single.php and using the next and prev arrow to browse my blog.

Anyone knows of any other plugin that does what im looking for?