Fake Plugins, Fake Security
Update: The plugin name is fake and has nothing to do with well-known WP-SpamShield plugin in the official WordPress plugin repository.
WordPress users are becoming increasingly more aware of security threats and as a result they are taking more actions to secure their websites (e.g. by installing security plugins). While this is a good thing, there are always black hats trying to take an advantage of new opportunities to compromise websites.