How to Perform a Website Security Check and Harden It Against Hackers
Your website is the core of your business — and hackers know it.
Whether you run a blog, an online store, or a service site, if your website isn’t secure, it’s vulnerable.
The truth is, most websites are hacked not because hackers are too smart — but because owners forget simple security checks.
In this post, you’ll learn exactly how to perform a full website security check and harden your site so hackers can’t get in.
It’s easy to understand, even if you’re not a technical expert.
Step 1: Understand What a Website Security Check Means
A proper website security check isn’t just about running an antivirus scan.
It’s a full inspection that looks for weak spots in your website and hosting.
It includes:
- Your CMS (like WordPress or Joomla)
- Themes and plugins
- Server settings and open ports
- User access and passwords
- Backups and database security
Goal: Find every weakness before attackers do.
Step 2: Start With the Basics — Updates and Backups
Before you scan or test anything, handle the essentials.
- Update everything.
- Update your CMS, themes, and plugins.
- Update your hosting PHP version and server software.
- Create backups.
- Use a daily backup plugin or hosting backup feature.
- Store copies on Google Drive, Dropbox, or another off-site location.
- Test one backup every month to make sure it works.
Why it matters: Most website hacks happen through old or outdated software.
Step 3: Run a Full Website Security Scan
Now it’s time to test your website for hidden issues.
Use these trusted tools:
- Sucuri SiteCheck (for malware and blacklist scanning)
- WPScan (for WordPress plugin and theme vulnerabilities)
- SSL Labs Test (for SSL/TLS strength and HTTPS configuration)
- SecurityHeaders.com (for missing browser security headers)
- VirusTotal (for URL and file malware checks)
These scans take only a few minutes but can reveal dangerous weaknesses.
Goal: Identify outdated scripts, open files, and bad configurations.
Step 4: Scan Your Server Too
Hackers often target the server before the website itself.
- Use Nmap or OpenVAS to find open ports.
- Disable unused services like FTP or Telnet.
- Use fail2ban or your hosting firewall to block brute-force attacks.
- Disable root SSH login and use SSH keys instead of passwords.
- Hide server version numbers in HTTP headers.
Goal: Lock down the environment that powers your website.
Step 5: Harden Your Website
Once you’ve found weak points, fix and harden them immediately.
Here’s a checklist for website hardening:
- Strong authentication
- Use Two-Factor Authentication (2FA) for all admin logins.
- Limit login attempts.
- Change default usernames like “admin.”
- Install a Web Application Firewall (WAF)
- Use Cloudflare, Sucuri, or Astra to block attacks before they reach your site.
- Add security headers
Add these lines in your .htaccess file or server configuration:
Header set X-Frame-Options “DENY”
Header set X-Content-Type-Options “nosniff”
Header set Referrer-Policy “strict-origin-when-cross-origin”
Header set Strict-Transport-Security “max-age=31536000; includeSubDomains; preload” Then test at SecurityHeaders.com to confirm. - Limit file uploads
- Allow only safe file types.
- Store uploads outside the public root folder.
- Block scripts from running in upload folders.
- Secure your database
- Never use “root” as a database user.
- Use strong, random passwords.
- Restrict privileges (read or write only if needed).
- Disable directory listing
Add this line to your .htaccess file:
Options -Indexes - Remove unused files and accounts
- Delete old themes, plugins, and test files.
- Remove inactive user accounts.
Goal: Close every door hackers could use to enter your system.
Step 6: Set Up Real-Time Monitoring
Security doesn’t stop after setup — you need to watch your site.
- Install a monitoring plugin like Wordfence, iThemes Security, or Sucuri.
- Enable alerts for login attempts, file changes, and IP lockouts.
- Set up uptime monitoring with UptimeRobot or Better Uptime.
- Check logs weekly for strange activity.
Goal: Get notified before a small issue turns into a big problem.
Step 7: Audit User Access and Roles
Who has access to your website matters as much as how they use it.
- Remove inactive or unknown accounts.
- Downgrade unnecessary admin roles.
- Review API keys and tokens — delete unused ones.
- Follow the principle of least privilege (give only what’s needed).
Goal: Reduce human-related risks and credential leaks.
Step 8: Test Your Security Regularly
Website security is not a one-time job — it’s a continuous process.
Suggested schedule:
- Full site scan: weekly
- Plugin and theme updates: weekly
- Backup testing: monthly
- Server patching: monthly
- Access review: every 3 months
Automate as much as you can with tools and alerts.
Step 9: Have an Incident Response Plan
Even secure sites can face attacks, so be prepared.
If your site is hacked:
- Put the site in maintenance mode.
- Find out what caused the issue.
- Restore a clean backup.
- Change all passwords and API keys.
- Run a full security scan again.
- Notify users if their data was affected.
- Re-submit to Google Search Console for re-verification.
Goal: Recover quickly without losing trust or data.
Step 10: Protect Your SEO and Reputation
Security and SEO are connected.
A hacked or blacklisted site loses traffic fast.
- Verify your site in Google Search Console.
- Check the “Security Issues” and “Coverage” reports.
- Make sure all pages use HTTPS.
- Fix broken links and resubmit your sitemap.
Goal: Keep your website trusted by users and Google.
Website Hardening Summary
Use this simple checklist every month:
[ ] Update all software and plugins
[ ] Run malware and vulnerability scans
[ ] Enable Two-Factor Authentication
[ ] Add a Web Application Firewall
[ ] Apply security headers
[ ] Disable directory listing
[ ] Remove unused accounts and files
[ ] Test backups
[ ] Review access logs
[ ] Have an emergency recovery plan
Final Thoughts
Website security isn’t about being perfect — it’s about being proactive.
Hackers target the easiest websites, not the strongest ones.
By running regular security checks, keeping software updated, and following this hardening guide, you’ll make your site far harder to attack.
Remember:
You can’t stop hackers from trying,
but you can make sure they fail.
Key Takeaways
- Keep your website software updated.
- Run regular security scans.
- Use Two-Factor Authentication and a firewall.
- Add security headers and strong passwords.
- Test backups monthly.
- Monitor and review logs weekly.
Your website is your brand’s reputation.
Protect it like your business depends on it — because it does.