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esf.edu.hk Paid content

Categories: Education & Learning

English Schools Foundation - the largest English-medium international school organisation in Hong Kong. Our 22 schools and comprehensive programme of extra-curricular activities bring out the best in every student through a personalised approach to learning and by inspiring curious minds.

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Updated: 2026-09-22 05:57 Language: English (default) Access: Normal

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Website Overview

The available information shows a mix of normal operation and configuration gaps. Depending on how the website is used, these gaps may affect secure access or the consistency of its public presentation.

Domain and Registration

Unknown

DNS and Email

Unknown

TLS and Certificates

Unknown

HTTP and Browser Security

The Server header exposes the software version: Apache/2.4.62 (Red Hat Enterprise Linux) OpenSSL/3.0.7. This makes version-targeted checks easier, but is not proof of an exploitable vulnerability. The response lacks these common security headers: HSTS, X-Content-Type-Options, Referrer-Policy, Permissions-Policy. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. No obvious internal addresses or debug information were found in the headers. No explicit CDN or WAF marker was found in the response headers.

Technology Stack Analysis

Unknown

Search and Social Sharing

Unknown

Hosting and Email

DNSUnknown
HostingUnknown
EmailUnknown
Location Location unknown

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Pages, Search and Sharing

Unknown

Registration details RDAP / WHOIS

Unknown

DNS records

Unknown

TLS and certificates

Unknown

HTTP response headers

HeaderValue
content-typetext/html; charset=UTF-8
cache-controlmax-age=2592000
serverApache/2.4.62 (Red Hat Enterprise Linux) OpenSSL/3.0.7
content-security-policyframe-ancestors 'self' https://oas.esf.edu.hk/ https://oasweb-stg.esf.edu.hk/ https://oasweb-uat.esf.edu.hk/ https://oasweb-dev.esf.edu.hk/ https://oasweb-dev2.esf.edu.hk/ https://srs-uat.esf.edu.hk https://www.1823.gov.hk https://api.data.gov.hk;
referrer-policy

Identified technologies

Technology stack: Unknown

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