cloudpiercer.org

What it is

CloudPiercer is an origin exposure detection tool for websites protected by cloud security services. Its core premise is that many sites rely on cloud security providers for protection, but if the real Web server IP is discovered, attackers may be able to bypass cloud-based defenses and access the origin directly. The article states that its research found more than 70% of CBSP-protected domains are at risk of real IP exposure, and CloudPiercer is designed to help administrators automatically assess several high-priority exposure vectors and fix misconfigurations accordingly.

Core capabilities

In terms of protection category, it is not a WAF or DDoS mitigation service, but an assessment tool for origin IP exposure and cloud-protection bypass risk. Its scan dimensions include historical DNS/IP databases, thousands of subdomains that may connect directly to the origin, DNS records such as MX/SPF, sensitive files that may leak information such as PHP-info pages, PingBack endpoints that can trigger outbound connections from the origin, and hosts queried via censys.io whose certificates contain the target domain. Deployment is lightweight: users submit a root domain and an email address to start a scan, and are contacted by email after the scan is complete.

Pricing and management

The page does not disclose its pricing model, free quota, payment methods, or enterprise plans, so pricing cannot be determined. Management and alerting capabilities also appear basic: the text only shows form submission and email notification, with no mention of asset grouping, continuous monitoring, risk trends, team permissions, APIs, Webhooks, or SIEM integrations. Compliance certifications, data retention, and privacy boundaries are also not described in the text, so enterprises should verify these details before adoption.

Pros, cons, and who it is for

Its strengths are a clear focus and practical coverage of common leakage vectors, making it especially useful for verifying whether the origin is truly hidden after deploying a CDN, WAF, or cloud security service. The downside is that it looks more like a one-off detection tool than a full security operations platform; it cannot replace origin ACLs, cloud firewalls, WAF policies, or continuous asset monitoring. It is suitable for small and medium-sized site administrators, security researchers, and operations teams performing configuration checks, and can also serve as part of enterprise red-team/blue-team work or pre-launch reviews.

Access from China

The text does not provide information about access from mainland China, so this is unknown. Since some of its capabilities rely on external data sources such as censys.io, actual scan completeness may be affected by network connectivity. If access or compliance is limited, alternatives include SecurityTrails, Censys, Shodan, OWASP Amass, or the origin-protection and asset-exposure checking capabilities provided by domestic cloud vendors’ CDN/WAF services.