Review HSTS, a browser policy that keeps site connections on HTTPS. Check response headers, policy duration, and subdomain coverage, guide server or CDN configuration, and explain the precautions needed before enabling browser preloading.
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Use when reviewing HTTP response headers on any site that serves content over HTTPS.
安装前可以查看交给 AI 代理的指令内容。
Without HSTS, an attacker on the same network can intercept the first HTTP request and strip TLS (SSL stripping), silently downgrading the connection before the browser ever sees a redirect.
Strict-Transport-Security: max-age=31536000; includeSubDomains on all HTTPS responsesmax-age=31536000 (1 year) minimum; HSTS preloading requires at least 1 yearincludeSubDomains to protect all subdomains from downgrade attackspreload only after testing — it is difficult to reverse and takes weeks to propagateCheck whether the server sends a Strict-Transport-Security header on all HTTPS responses, and verify the max-age, includeSubDomains, and preload directives are appropriate.
Add a Strict-Transport-Security header with max-age=31536000 and includeSubDomains to all HTTPS responses. Configure your web server or CDN to send this header, and validate it with curl or securityheaders.com.
Explain what HTTP Strict Transport Security (HSTS) is, how it prevents SSL stripping attacks, what the max-age and includeSubDomains directives do, and why the preload directive requires caution.
Review server config, headers, forms, and integration points related to Set an HSTS header. Flag exact responses, cookies, or browser behaviors that violate the rule, and verify them against the effective production-like response.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
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Create and review custom 404 pages that help visitors recover from broken or moved links through search and navigation. Check the rendered page and HTTP response so missing content returns a proper 404 status.
中文简介正在准备中。当前显示英语简介。
Audit or create a dedicated About page that explains a website’s purpose and identifies its people or organization. Review the rendered output and supporting information, including expertise and contact details, to find gaps.
中文简介正在准备中。当前显示英语简介。
Review and add automated accessibility checks for components, pages, and continuous integration workflows. Use axe-based tools to detect structural and attribute issues, while identifying checks that still need keyboard or screen reader testing.
中文简介正在准备中。当前显示英语简介。
Review sign-in, registration, multi-factor authentication, and account recovery for accessibility barriers. Find blocked paste, difficult code entry, and inaccessible backup methods, then suggest authentication paths that support password managers, autofill, or device approval.
中文简介正在准备中。当前显示英语简介。
Review form errors, success messages, and live updates so screen reader users receive important notifications. Check the HTML delivered to the browser, announcement settings, display duration, and dismissal controls, then identify specific elements that need changes.
中文简介正在准备中。当前显示英语简介。
Review HTML tables so screen reader users can understand how headers and data relate. Check header markup, table descriptions, and merged cells, then identify specific fixes and ways to verify them.
中文简介正在准备中。当前显示英语简介。