Sucuri SiteCheck is a web-based website security checker and remote malware scanner that analyzes a URL for common security threats. It checks publicly visible website content for known malware, malicious code, viruses, suspicious links, redirects, iframes, website errors, defacements, and other security anomalies.

The tool also reviews blacklist status through services such as Google and PhishTank, identifies outdated content management systems, plugins, and extensions, and provides security-related findings and recommendations. Sucuri SiteCheck supports websites built with platforms including WordPress, Joomla, and Drupal, making it useful for website owners, developers, and administrators performing routine website security checks.

Because SiteCheck is a remote scanner, it evaluates content accessible at the browser level and cannot inspect every server-side file or detect all backdoors, mailers, phishing pages, or other hidden threats. Results are intended to help identify potential issues and should be considered an initial website malware and security assessment rather than a complete server-level audit.

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