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How To Secure WordPress Without Security Plugins

WordPress is a very popular piece of software and it’s for this reason that it is highly targeted by those looking to hack your website. There are a bunch of ways to protect your WordPress Website from being hacked and I’ve covered some of the best practices in other articles but in this post I will show you how to Secure your WordPress Website using your .htaccess file.

Advanced WordPress Security, Minus the Plugins

As always make sure to take a full backup of your website before making any changes. The code snippets below are placed in the root directory of your WordPress Installation. You can use your Control Panel to edit the file or you can use an FTP Program to upload your changes or you can even use the Yoast SEO Plugin File Editor to make these changes.

Protect your .htaccess file

I’m mentioning this first because your .htaccess file is one of the most important files and it needs to be protected. Use the code snippet below to secure this file.


#Protect .htaccess
<files ~ "^.*\.([Hh][Tt][Aa])">
order allow,deny
deny from all
satisfy all
</files>

Protect your wp-config.php file

This is another extremely important file to protect so make sure to include the code below in your .htaccess file.


# Protect wp-config.php
<files wp-config.php>
order allow,deny
deny from all
</files>

Protect your error_log file

It’s important to make sure that any error logs aren’t accessible.


#Protect error_log
<files error_log>
order allow,deny
deny from all
</files>

Watch the Video Tutorial

Protect your WordPress Website from SQL Injection

This provides protection against SQL Injection of your WordPress Database.


#Protect from SQL Injection
Options +FollowSymLinks
RewriteEngine On
RewriteCond %{QUERY_STRING} (< |%3C).*script.*(>|%3E) [NC,OR]
RewriteCond %{QUERY_STRING} GLOBALS(=|[|%[0-9A-Z]{0,2}) [OR]
RewriteCond %{QUERY_STRING} _REQUEST(=|[|%[0-9A-Z]{0,2})
RewriteRule ^(.*)$ index.php [F,L]

Prevent others from Hotlinking your Pictures.

This will help your website from being drained of it’s resources when others try and hotlink images. Make sure to change the URL example to your URL.


# Disable hotlinking of images
RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http(s)?://(www\.)?example.com [NC]
RewriteCond %{HTTP_REFERER} !^http(s)?://(www\.)?google.com [NC]
RewriteRule \.(jpg|jpeg|png|gif)$ – [NC,F,L]

Restrict Direct Access to Plugin and Theme PHP files

This will ensure that PHP files can’t be directly accessed.


# Restrict Direct Access to Plugin and Theme PHP files
RewriteCond %{REQUEST_URI} !^/wp-content/plugins/file/to/exclude\.php
RewriteCond %{REQUEST_URI} !^/wp-content/plugins/directory/to/exclude/
RewriteRule wp-content/plugins/(.*\.php)$ - [R=404,L]
RewriteCond %{REQUEST_URI} !^/wp-content/themes/file/to/exclude\.php
RewriteCond %{REQUEST_URI} !^/wp-content/themes/directory/to/exclude/
RewriteRule wp-content/themes/(.*\.php)$ - [R=404,L]

Secure the wp-includes Directory

Your includes folder is important and is often targeted by hackers. Protect it with the code snippet below.


# Protect Include-Only files
<ifmodule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^wp-admin/includes/ - [F,L]
RewriteRule !^wp-includes/ - [S=3]
RewriteRule ^wp-includes/[^/]+\.php$ - [F,L]
RewriteRule ^wp-includes/js/tinymce/langs/.+\.php - [F,L]
RewriteRule ^wp-includes/theme-compat/ - [F,L]
</ifmodule>

Don’t Let People Browse your Directories

This is a great way to prevent Directory Browsing.


# Disable directory browsing
Options All -Indexes

Block Author Scans

Sometimes hackers will try and scan your author listings. You can block that.


# BEGIN block author scans
RewriteEngine On
RewriteBase /
RewriteCond %{QUERY_STRING} (author=\d+) [NC]
RewriteRule .* - [F]
# END block author scans

Block WordPress XMLRPC Requests

If you’re not using this feature, then block it.


# Block WordPress xmlrpc.php requests
<files xmlrpc.php>
order deny,allow
deny from all
</files>

6G Firewall/Blacklist

This firewall was created by PerishablePress and provides amazing protection.


# 6G FIREWALL/BLACKLIST
# @ https://perishablepress.com/6g/

# 6G:[QUERY STRINGS]
<IfModule mod_rewrite.c>
	RewriteEngine On
	RewriteCond %{QUERY_STRING} (eval\() [NC,OR]
	RewriteCond %{QUERY_STRING} (127\.0\.0\.1) [NC,OR]
	RewriteCond %{QUERY_STRING} ([a-z0-9]{2000,}) [NC,OR]
	RewriteCond %{QUERY_STRING} (javascript:)(.*)(;) [NC,OR]
	RewriteCond %{QUERY_STRING} (base64_encode)(.*)(\() [NC,OR]
	RewriteCond %{QUERY_STRING} (GLOBALS|REQUEST)(=|\[|%) [NC,OR]
	RewriteCond %{QUERY_STRING} (<|%3C)(.*)script(.*)(>|%3) [NC,OR]
	RewriteCond %{QUERY_STRING} (\\|\.\.\.|\.\./|~|`|<|>|\|) [NC,OR]
	RewriteCond %{QUERY_STRING} (boot\.ini|etc/passwd|self/environ) [NC,OR]
	RewriteCond %{QUERY_STRING} (thumbs?(_editor|open)?|tim(thumb)?)\.php [NC,OR]
	RewriteCond %{QUERY_STRING} (\'|\")(.*)(drop|insert|md5|select|union) [NC]
	RewriteRule .* - [F]
</IfModule>

# 6G:[REQUEST METHOD]
<IfModule mod_rewrite.c>
	RewriteCond %{REQUEST_METHOD} ^(connect|debug|move|put|trace|track) [NC]
	RewriteRule .* - [F]
</IfModule>

# 6G:[REFERRERS]
<IfModule mod_rewrite.c>
	RewriteCond %{HTTP_REFERER} ([a-z0-9]{2000,}) [NC,OR]
	RewriteCond %{HTTP_REFERER} (semalt.com|todaperfeita) [NC]
	RewriteRule .* - [F]
</IfModule>

# 6G:[REQUEST STRINGS]
<IfModule mod_alias.c>
	RedirectMatch 403 (?i)([a-z0-9]{2000,})
	RedirectMatch 403 (?i)(https?|ftp|php):/
	RedirectMatch 403 (?i)(base64_encode)(.*)(\()
	RedirectMatch 403 (?i)(=\\\'|=\\%27|/\\\'/?)\.
	RedirectMatch 403 (?i)/(\$(\&)?|\*|\"|\.|,|&|&amp;?)/?$
	RedirectMatch 403 (?i)(\{0\}|\(/\(|\.\.\.|\+\+\+|\\\"\\\")
	RedirectMatch 403 (?i)(~|`|<|>|:|;|,|%|\\|\s|\{|\}|\[|\]|\|)
	RedirectMatch 403 (?i)/(=|\$&|_mm|cgi-|etc/passwd|muieblack)
	RedirectMatch 403 (?i)(&pws=0|_vti_|\(null\)|\{\$itemURL\}|echo(.*)kae|etc/passwd|eval\(|self/environ)
	RedirectMatch 403 (?i)\.(aspx?|bash|bak?|cfg|cgi|dll|exe|git|hg|ini|jsp|log|mdb|out|sql|svn|swp|tar|rar|rdf)$
	RedirectMatch 403 (?i)/(^$|(wp-)?config|mobiquo|phpinfo|shell|sqlpatch|thumb|thumb_editor|thumbopen|timthumb|webshell)\.php
</IfModule>

# 6G:[USER AGENTS]
<IfModule mod_setenvif.c>
	SetEnvIfNoCase User-Agent ([a-z0-9]{2000,}) bad_bot
	SetEnvIfNoCase User-Agent (archive.org|binlar|casper|checkpriv|choppy|clshttp|cmsworld|diavol|dotbot|extract|feedfinder|flicky|g00g1e|harvest|heritrix|httrack|kmccrew|loader|miner|nikto|nutch|planetwork|postrank|purebot|pycurl|python|seekerspider|siclab|skygrid|sqlmap|sucker|turnit|vikspider|winhttp|xxxyy|youda|zmeu|zune) bad_bot
	
	# Apache < 2.3
	<IfModule !mod_authz_core.c>
		Order Allow,Deny
		Allow from all
		Deny from env=bad_bot
	</IfModule>

	# Apache >= 2.3
	<IfModule mod_authz_core.c>
		<RequireAll>
			Require all Granted
			Require not env bad_bot
		</RequireAll>
	</IfModule>
</IfModule>

# 6G:[BAD IPS]
<Limit GET HEAD OPTIONS POST PUT>
	Order Allow,Deny
	Allow from All
	# uncomment/edit/repeat next line to block IPs
	# Deny from 123.456.789
</Limit>

HackRepairs Blacklist

This is a Blacklist that is used in iThemes Security and created by HackRepair.


# Start HackRepair.com Blacklist
 RewriteEngine on
 # Start Abuse Agent Blocking
 RewriteCond %{HTTP_USER_AGENT} "^Mozilla.*Indy" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Mozilla.*NEWT" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^$" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Maxthon$" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^SeaMonkey$" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Acunetix" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^binlar" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^BlackWidow" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Bolt 0" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^BOT for JCE" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Bot mailto\:craftbot@yahoo\.com" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^casper" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^checkprivacy" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^ChinaClaw" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^clshttp" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^cmsworldmap" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Custo" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Default Browser 0" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^diavol" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^DIIbot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^DISCo" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^dotbot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Download Demon" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^eCatch" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^EirGrabber" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^EmailCollector" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^EmailSiphon" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^EmailWolf" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Express WebPictures" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^extract" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^ExtractorPro" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^EyeNetIE" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^feedfinder" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^FHscan" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^FlashGet" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^flicky" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^g00g1e" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^GetRight" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^GetWeb\!" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Go\!Zilla" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Go\-Ahead\-Got\-It" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^grab" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^GrabNet" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Grafula" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^harvest" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^HMView" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Image Stripper" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Image Sucker" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^InterGET" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Internet Ninja" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^InternetSeer\.com" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^jakarta" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Java" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^JetCar" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^JOC Web Spider" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^kanagawa" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^kmccrew" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^larbin" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^LeechFTP" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^libwww" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Mass Downloader" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^microsoft\.url" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^MIDown tool" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^miner" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Mister PiX" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^MSFrontPage" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Navroad" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^NearSite" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Net Vampire" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^NetAnts" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^NetSpider" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^NetZIP" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^nutch" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Octopus" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Offline Explorer" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Offline Navigator" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^PageGrabber" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Papa Foto" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^pavuk" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^pcBrowser" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^PeoplePal" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^planetwork" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^psbot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^purebot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^pycurl" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^RealDownload" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^ReGet" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Rippers 0" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^sitecheck\.internetseer\.com" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^SiteSnagger" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^skygrid" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^SmartDownload" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^sucker" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^SuperBot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^SuperHTTP" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Surfbot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^tAkeOut" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Teleport Pro" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Toata dragostea mea pentru diavola" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^turnit" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^vikspider" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^VoidEYE" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Web Image Collector" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WebAuto" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WebBandit" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WebCopier" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WebFetch" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WebGo IS" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WebLeacher" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WebReaper" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WebSauger" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Website eXtractor" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Website Quester" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WebStripper" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WebWhacker" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WebZIP" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Widow" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WPScan" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WWW\-Mechanize" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^WWWOFFLE" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Xaldon WebSpider" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^Zeus" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "^zmeu" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "360Spider" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "CazoodleBot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "discobot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "EasouSpider" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "ecxi" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "GT\:\:WWW" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "heritrix" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "HTTP\:\:Lite" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "HTTrack" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "ia_archiver" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "id\-search" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "IDBot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "Indy Library" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "IRLbot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "ISC Systems iRc Search 2\.1" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "LinksCrawler" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "LinksManager\.com_bot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "linkwalker" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "lwp\-trivial" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "MFC_Tear_Sample" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "Microsoft URL Control" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "Missigua Locator" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "MJ12bot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "panscient\.com" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "PECL\:\:HTTP" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "PHPCrawl" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "PleaseCrawl" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "SBIder" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "SearchmetricsBot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "SeznamBot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "Snoopy" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "Steeler" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "URI\:\:Fetch" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "urllib" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "Web Sucker" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "webalta" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "WebCollage" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "Wells Search II" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "WEP Search" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "XoviBot" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "YisouSpider" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "zermelo" [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} "ZyBorg" [NC,OR]
 # End Abuse Agent Blocking
 # Start Abuse HTTP Referrer Blocking
 RewriteCond %{HTTP_REFERER} "^https?://(?:[^/]+\.)?semalt\.com" [NC,OR]
 RewriteCond %{HTTP_REFERER} "^https?://(?:[^/]+\.)?kambasoft\.com" [NC,OR]
 RewriteCond %{HTTP_REFERER} "^https?://(?:[^/]+\.)?savetubevideo\.com" [NC]
 # End Abuse HTTP Referrer Blocking
 RewriteRule ^.* - [F,L]
 # End HackRepair.com Blacklist, http://pastebin.com/u/hackrepair

Final Thoughts

Securing your WordPress Website isn’t hard to do as long as you follow Cyber Security best practices and use the right Security Plugins or the code above. As always make sure you take a full backup of your website before making any changes.

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