How to Remove Japanese Keyword Hack in WordPress (Step-by-Step Guide)
If you’re seeing strange Japanese pages indexed in Google, spam product listings, or unfamiliar URLs in Search Console, your WordPress site may be infected with the Japanese Keyword Hack.
This type of malware injects hidden spam pages into your website to manipulate search rankings. If not removed properly, it can severely damage SEO and reputation.
Signs Your Site Is Infected
- Japanese spam pages appearing in Google search results
- Unknown URLs indexed in Search Console
- Redirects to suspicious domains
- Modified core WordPress files
- New admin users you did not create
Why the Japanese Keyword Hack Happens
- Outdated plugins or themes
- Weak admin passwords
- Compromised hosting environments
- File permission misconfiguration
Step 1: Put the Site in Maintenance Mode
Prevent further damage by temporarily restricting public access while cleanup is performed.
Step 2: Scan for Modified Core Files
Compare your WordPress core files against a clean version. Malware often injects hidden code into core or theme files.
Step 3: Inspect the Database
Check for injected spam content in posts, options, or hidden tables created by attackers.
Step 4: Remove Backdoors
Many infections leave hidden PHP backdoor files. These must be identified and removed completely.
Step 5: Harden WordPress After Cleanup
- Change all passwords (admin, hosting, database)
- Update WordPress core, themes, and plugins
- Install proper security monitoring
- Configure firewall and file permissions correctly
Request Google Reconsideration
After full cleanup, use Google Search Console to request review if your site was flagged.
When Professional Cleanup Is Recommended
The Japanese Keyword Hack often hides deep in file structures. Superficial plugin scans may not remove backdoors entirely.
If your site is business-critical, structured malware removal ensures full cleanup and future protection.
👉 Request Professional WordPress Malware Cleanup
Complete malware removal and hardening can typically be handled within 24–48 hours depending on infection severity.