Help me that how to protect my WP site from hackers

hello,

would you plz help me that how to protect my WP website from hackers by using some reliable easy plugins.

Thanks

and possibly a CAPTCHA to help prevent too many spam registration attempts - for example http://www.dfactory.eu/plugins/math-captcha/ or if you only want those with JavaScript enabled to be able to register - http://blog.fili.nl/wordpress-anti-captcha-plugin/

Thank you felgall !