WordPress security issues revealed!

WordPress is currently one of the most widely used website building platforms, and its powerful functions and ease of use have attracted countless users. However, as the number of WordPress websites continues to increase, security issues have become increasingly prominent. This article will reveal the security issues of WordPress and provide users with specific code examples to strengthen the security of the website.

1. Weak Passwords
   Weak passwords are one of the most common security holes in WordPress websites. Many users use simple passwords or passwords that are too common and easily cracked by hackers. To prevent this from happening, users are advised to use complex and difficult-to-guess passwords and to change them regularly.

Code example:

define('DB_PASSWORD', 'MyC0mplexP@ssw0rd!');

2. brute force cracking caused by the ver command
   The URL of the WordPress default login interface is /wp-login.php, hackers can use brute force cracking The tool continuously tries combinations of account passwords. In order to enhance security, you can modify the login interface URL to reduce the possibility of brute force cracking.

Code sample:

function custom_login_url(){
    return home_url('my-login');
}
add_filter('login_url', 'custom_login_url');

3. Not updated in time
   WordPress and its plugins, themes, etc. need to be updated regularly to patch security vulnerabilities. WordPress websites that are not updated in time are easy targets for hackers. It is recommended that users update WordPress and related plug-ins and themes in a timely manner, and regularly check whether new versions are released.

Code example:

wp_version_check();

4. Improperly set file permissions
   Improperly set file permissions can leave opportunities for hackers to exploit. It is recommended to set WordPress root directory permissions to 755, file permissions to 644, and directory permissions to 755.

Code example:

find /path/to/wordpress/ -type d -exec chmod 755 {} ;
find /path/to/wordpress/ -type f -exec chmod 644 {} ;

5. SQL injection
   SQL injection is a common attack method. Hackers enter malicious code in the input box to obtain the database The data. To prevent SQL injection, it is recommended to use prepared statements to sanitize input data.

Code sample:

$wpdb->prepare("SELECT * FROM $wpdb->users WHERE ID = %d", $user_id);

To summarize, WordPress security issues exist in all aspects, and users need to consider them comprehensively and take corresponding protective measures. By strong passwords, modifying login URLs, timely updates, correctly setting file permissions, and preprocessing input data, you can strengthen the security of your WordPress website and protect it from hackers. I hope this article will be helpful to users in solving WordPress security issues.

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