Last Updated on August 26, 2026 by Mat Diekhake

Security overview

Leak.sx is a site that hosts links to leaked account data. Technically, it shows a mixed security posture: modern hosting and valid TLS, but external security checks indicate one malware flag and multiple 404 errors on core resources. The site also loads leaked data through external domains, which increases supply‑chain risk.

SSL/TLS & encryption

  • HTTPS: Fully enabled across the site.
  • TLS certificate: Valid certificate detected.
  • Encryption strength: Uses modern TLS protocols typical of Cloudflare‑based hosting.
  • Mixed content: No mixed‑content warnings reported in the available data.

Hosting & infrastructure

  • Hosting provider: Cloudflare‑based edge network.
  • Server IPs: 104.21.46.149 and 172.67.140.53.
  • DNS: Multiple nameservers; DNSSEC not mentioned.
  • Domain age: Founded October 15, 2013 (based on archive history).
  • Infrastructure notes:
    • Several core resources return 404 Not Found, indicating missing or removed files.
    • Leaked data is served through an external domain, which increases exposure to third‑party risks.

Malware & phishing scan

  • Malware detection: External checks show one malware flag from a security engine.
  • Phishing flags: No broad phishing warnings reported.
  • Blacklist checks: The domain does not appear on major web threat blocklists.
  • Script integrity: No injected malicious scripts detected in parasite‑style scanning.
  • Resource issues: Multiple 404 errors on important JavaScript files, which may affect stability but are not inherently malicious.

Privacy & data handling

  • Data collected:
    • Browsing data
    • Session metadata
    • Interaction data with leaked‑account listings
  • Tracking technologies: Standard analytics and session‑tracking scripts are used.
  • Cookie behavior: Cookies are used for session management; no insecure cookie warnings reported.
  • Privacy risks: The site’s purpose involves distributing leaked account data, meaning user privacy is inherently at risk if interacting with or submitting any information.

App permissions (if applicable)

Leak.sx is a browser‑based site.

  • Permissions: Standard browser permissions (cookies, local storage, basic scripting).
  • Mobile apps: No separate mobile‑app permission set documented.

Breach history

  • Known data breaches: A breach‑exposure report shows 52,880 compromised user accounts associated with this domain.
  • Nature of exposure: These leaks typically originate from infected user endpoints, where malware steals credentials and later publishes them.
  • Impact: Exposed credentials can be reused for unauthorized access to services.

Security certifications

  • Formal certifications: Leak.sx does not list certifications such as SOC 2, ISO 27001, PCI DSS, or HIPAA.
  • Security practices:
    • Valid TLS
    • CDN‑based hosting
    • No published audit or certification details

Final safety verdict

Leak.sx is not technically safe to use.

While it uses modern hosting and valid TLS, the site:

  • Hosts leaked account data
  • Has one confirmed malware flag
  • Shows multiple missing resources
  • Is associated with tens of thousands of compromised credentials

From a purely technical standpoint, Leak.sx presents elevated risk, and users should avoid interacting with or providing any personal information to the site.