TyCam

This plugin is extremely beneficial if you have more than one author on your blog but it?s also still good to have even if your blog only has one author. What it does is add in social media links to your Contact Info section in your user profile for popular social media sites such as Google Plus, Twitter and Facebook.
Once you fill in one or more of those fields, 16 x16 icons will appear next to your name when your name appears as the author of a blog post. This lets readers easily find your social media information as they read and is completely unique to each author.

Author Social Links

Adds 16x16 social media icon links next to the author's name, unique to each author.

freemp

A simple, lightweight WordPress plugin to completely disable author archives/pages (regardless of whether the corresponding author really exists) and make the web server return status code 404 (‘Not Found’) instead. Related links will also be either disabled or completely removed.
The plugin does not require any configuration. Once activated, it will start doing its job.

Disable Author Archives

Works!

Disable Author Archives completely removes author archives and makes the web server return status code 404 ('Not Found') instead.

Author Social Links vs Disable Author Archives