Description
This plug-in helps setting up the various header instructions included in the HTTP protocol allowing for simple improvement of your website security.
This plug-in provides enabling of the following measures:
- HSTS (Strict-Transport-Security)
- CSP (Content-Security-Policy)
- Clickjacking mitigation (X-Frame-Options in main site)
- XSS protection (X-XSS-Protection)
- Disabling content sniffing (X-Content-Type-Options)
- Referrer policy
- Expect-CT
- Feature-Policy
- Remove PHP version information from the HTTP header
- Remove WordPress version information from the header
securityheaders.com is a useful resource for evaluating your web site’s security.
As usual, make sure to understand the meaning of these options and to run full tests on your web site as some options may result in some features stop working.
Screenshots
General settings screen. 
Content-Security-Policy directives settings screen. 
.htaccess contents screen.
Installation
- Upload the plugin files to the
/wp-content/plugins/http-securitydirectory, or install the plugin through the WordPress plugins screen directly. - Activate the plugin through the “Plugins” screen in WordPress.
- Use the Settings -> HTTP Security screen to configure the plugin.
FAQ
- How can I test the plug-in runs effectively?
-
Check the HTTP headers of your web site.
Reviews
September 26, 2020
I've learned a lot about Content Security Policy in the last 2 days. This is a good plugin for managing HTTP headers for security improvements.
August 30, 2020
This has been a very useful plugin at shoring up HSTS. Make sure you test your site at each step to ensure the very policy you are implementing doesn't block needed content. Once you've got the hang of how it works it is easy to setup and configure.
April 8, 2020
As a rookie regarding WordPress security I was pretty lost about HTTP Security headers until I found this pluging. So far it seems to be working great for me, even though I had to do some extra research to set up the Content Security Policy and Feature Policy thanks to these links (even if they are a bit old).
Maybe you could add them (or similar ressources) as references to create a CSP / feature policy for beginners like me ?
Thanks Carl for the great plugin and keep up the good work !
December 24, 2019
This plugin is easy to use. It is confined to a limited set of options to set the http headers. It seems that the most important ones have been chosen since testing my website after installing and setting the plugin yielded an A+ score on securityheaders.com. The only thing missings is cache-control; this would boost the performance of my website even more. Thanks to the maker of this plugin, I feel my website is safe and up-to-par with other safe websites like banking platforms.
November 22, 2019
Well im was going crazy all around the web searching for a way to protect my header i attemp to do almost everyting thats on the web to achieve this but on every scan i got this message: To improve the security of your site against some types of XSS (cross-site scripting) attacks, it is recommended that you add the following header to your site:
X-XSS-Protection: 1; mode=block
It is supported by IE (Internet Explorer) and Chrome. You can enable it by modifying your Apache settings or your .htaccess file, and adding the following line to it:
Header set X-XSS-Protection "1; mode=block"
i even attemp to follow these instructions but even adding that code this warning was still showing well i installed this plugin and i will try it to see if it help with what i need to do buy i want to thank the plugin developer for this amazing tool playing around with the h.access file is no game, i will like to get in touch with this developer to check if im using the right configuration...
July 8, 2019
If I could, I would give you 10 stars and dance at your wedding. You just saved me HOURS of work trying to figure out how to secure my site. After two hacks, I had enough and started securing it on my own. To slow and labor intensive (W3C school). Literally took me not even 5 minutes.
So, THANK YOU, THANK YOU, THANK YOU.
Contributors & Developers
“HTTP headers to improve web site security” is open source software. The following people have contributed to this plugin.
Contributors
“HTTP headers to improve web site security” has been translated into 8 locales. Thank you to the translators for their contributions.
Translate “HTTP headers to improve web site security” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
2.5.6
- Fixed some text escaping
2.5.5
- Added missing text escaping
2.5.4
- Added missing text escaping
2.5.3
- Minor fix
2.5.2
- Improved options sanitize
2.5.1
- Minor fix
2.5
- Tested with WordPress 5.4
- Added support for Feature-Policy
2.4.2
- Tested with WordPress 5.0
2.4
- Added .htaccess instructions
2.3.2
- Tested with WordPress 4.9
2.3
- Added support for Expect-CT
- Cleaned up the interface
2.2
- Switched to languages packs
2.1
- Added support for Referrer-Policy directive
- Added uninstall database cleanup
2.0
- Added support for all Content-Security-Policy directives
- Reworked the user interface
1.11
- Added setting the mode for x-frame-options
1.10.7
- Removed HSTS header when connected in HTTP
1.10.3
- Fixed HSTS syntax warning
1.10
- Added support for Content-Security-Policy
1.9
- Added critical issues notifications
1.7.5
- Added max-age option to HSTS setting
1.6
- Added option to remove WordPress version information from the header
1.5
- Added option to remove PHP version information from the HTTP header
1.4
- Included link to submit site preload to browsers
- Reduced HSTS max-age to one year
1.3
- Added X-Frame-Options protection.
- Added X-Content-Type-Options protection.
- Added HSTS options.
1.1
- Added XSS protection option.
1.0
- First stable version providing basic HSTS support.