Nowadays more and more web crawlers visit a website, some are good for you, such as google search engine, they respect robots.txt protocol. But some of them have bad behavior that has negatively impact to your site. How to block the bad bots These crawlers are called bot. A bot is a software program that operates on the Internet and performs repetitive tasks. While some bot traffic is from good bots, bad bots can have a huge negative impact on a website or application. So we want to block those bad bots from visiting our site. Normally, we can set rule in robots.txt file, but the bad bots do not respect these rules. So setting up robots.txt file is only for good bots. To be sure the bad bots are blocked, we have to use .htaccess file. Here are the steps: 1. find out the bot keyword from the user-agent from the log. 2. add the following script to the top of .htaccess file: a) set rewrite condition: It uses regular expression to match multiple user agents in one line. RewriteEngine On RewriteCond %{HTTP_USER_AGENT} "dataforseobot|Yandex|AhrefsBot|BLEXBot|SemrushBot" [NC] RewriteRule "^.*$" - [F,L] Or b) using SetEnvIf directives: SetEnvIfNoCase User-Agent "AhrefsBot" badbots SetEnvIfNoCase User-Agent "BLEXBot" badbots SetEnvIfNoCase User-Agent "SemrushBot" badbots SetEnvIfNoCase User-Agent "YandexBot" badbots SetEnvIfNoCase User-Agent "dataforseobot" badbots <Limit GET POST HEAD>  Order Allow,Deny  Deny from env=badbots </Limit> Both scripts are equiverant, just pick the one you like. By using the script above the page will return 403 (forbidden) to the bad bots. Test the effects Here's an example that uses chrome browser…

After applied SSL settings to enforce HTTPS browser starts complaining "Mixed Content: ..." as the image shown bellow. "Mixed Content" warnings occur when an HTTPS page is asked to load a resource over HTTP. Insecure resources are vulnerable to alteration by an active attacker or eavesdropping by a passive attacker, which violates the user's expectation of security for an HTTPS page. Ref: Fixing mixed content for more information. Fix: Change all insured links with "http://" to "https://" on the page. This could a tough work and time consuming. The following is a hot fix, it works very well for me. Hot fix: Add meta content in html head section to allow browser automatically upgrade http to https, ensure loading contents through SSL layer. <meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">  1,765 total views

Yesterday, I was notified there were malicious activity from your website, a huge number of email spam messages is originating from it.211cn.ca. As a result the website was suspended as limited access, which only allow registered IP can access the website. When I logon, notification appeared on the panel. And my.siteground home Detail notification In the review panel I saw a list of files that contains malicious code. 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The initial version of this threat was uploaded via wp include file called wp-vcd.php. The malicious code is injected into Wordpress core files like functions.php, class.wp.php, post.php, and also injected into WordPress themes, including child theme. It was reported that WP-VCD malware is a malicious code that comes bundled with illegitimate versions of a paid theme/plugin. These pirated themes and plugins incorporate malicious scripts that get inserted once you install them. Once leaked to your website though a nulled theme, it starts spreading to infect other themes on your site and even proliferates to infect every unprotected site hosted on the shared server. If you’ll look for “Free [pugin…