This question is not very detailed but I think you are talking about hiding parts of the markup for a post. If that is the case then has_term should be what you want.
if (!has_term('Hback','tax-slug')) {
// markup that does not show for 'Hback'
}
‘tax-slug’ is the taxonomy– a WordPress core taxonony like ‘post_tag’ a custom taxonomy that you or a plugin has created. You need to provide a third parameter containing the post ID or the post object if you are not meaning to check for the current post in a loop.