WordPress Daily Routine

Using a default or conflicting prefix causes security or functional issues.

Incorrect Database Table Prefix

Key Points: The default wp_ prefix can be a security risk and cause conflicts with other sites on the same server.

Every WordPress database has a prefix — it’s what separates your site’s tables from others. But using the default wp_ on a shared host or reused database is like painting your keys neon yellow and leaving them under the mat.

⚠️ Why It’s a Problem

• Hackers target wp_users, wp_options etc. in automated attacks
• Using the same prefix across multiple sites causes cross-site confusion
• Manual migrations or imports often break because of conflicting prefixes

🛠️ How to Fix

1. Change the prefix in wp-config.php:

   $table_prefix = 'newprefix_';

2. Rename all existing tables in the database to match the new prefix
3. Search and replace the old prefix in fields like options and usermeta

🔐 Security Note

Changing your prefix won’t stop advanced attackers — but it will block lazy automated ones. Pair this with other hardening methods for better protection.