WordPress网站被黑修复全记录：从SEO跳转到安全防护
案例背景：一位客户反映其WordPress独立站（PHP+MYSQL架构）出现异常现象：通过浏览器直接输入域名访问正常，但从Google等搜索引擎点击结果却会跳转到非法网站。此前已找人修复但未解决问题。
Case Background: A client reported abnormal behavior on their WordPress standalone site (PHP+MYSQL architecture): direct domain access worked normally, but clicking from Google search results redirected to illegal websites. Previous repair attempts had failed.
详细排查过程
Detailed Troubleshooting Process
1. 数据备份
首先通过插件对整站进行完整备份，确保数据安全。
1. Data Backup
First, complete site backup using plugins to ensure data security.
2. 安全扫描
使用安全插件全面扫描，除了一些更新提醒外，未发现明显恶意代码。
2. Security Scan
Comprehensive scan with security plugins showed no obvious malicious code beyond update reminders.
3. 系统升级
升级所有可更新的插件，但客户坚持5年未更新的主题成为重点怀疑对象。
3. System Updates
Updated all plugins, but the theme unchanged for 5 years became the prime suspect.
4. 数据库检查
通过PhpMyadmin搜索跳转域名相关信息，未发现异常。
4. Database Check
Searched for redirect-related information in PhpMyadmin, found nothing suspicious.
5. 主题排查
切换至其他主题后问题消失，最终在主题文件中发现精心隐藏的跳转JS代码，这种手法能完美规避常规安全检测。
5. Theme Investigation
Problem disappeared when switching themes, eventually found carefully hidden redirect JS code in theme files that bypassed regular security scans.
SEO安全建议
SEO Security Recommendations
1. 定期更新WordPress核心、主题和插件
2. 使用专业安全插件进行扫描
3. 监控网站在搜索引擎中的表现
4. 建立完善的备份机制
1. Regularly update WordPress core, themes and plugins
2. Use professional security plugins for scanning
3. Monitor site performance in search engines
4. Establish robust backup mechanisms
重要提示：如果您的WordPress网站出现类似问题，建议立即寻求专业帮助。
Important Note: If your WordPress site exhibits similar issues, seek professional help immediately.
