Threat Level: green Handler on Duty: Jan Kopriva

SANS ISC: HTTP Header Usage Statistics HTTP Header Usage Statistics


Sign Up for Free!   Forgot Password?
Log In or Sign Up for Free!

This is a continuation of work started by Brough Davis as part of his software security project for his Masters in Information Security Engineering. The main goal of this project is to find how many sites use security relevant headers, like for example the X-XSS-Protection or X-Frame-Options headers.

Below you will find a table/histogram showing how many times we found each header (security relevant or not). We access the index page of each site using a "head" request. The list of sites is derived from Alexa's Top 1 Million sites. We try to poll as many sites as possible each day.

As we collect more data, we will plot changes over time.



All Headers Active In The Past Month
Header Popularity
Set-Cookie
X-Cache
Date
Connection
Content-Type
Via
X-Amz-Cf-Pop
X-Amz-Cf-Id
Vary
Server
Cache-Control
Content-Length
ETag
X-Cache-Lookup
X-Frame-Options
X-Content-Type-Options
Strict-Transport-Security
Expires
Age
Last-Modified
Link
Accept-Ranges
X-Powered-By
X-XSS-Protection
Content-Security-Policy
Referrer-Policy
X-Edge-Origin-Shield-Skipped
X-Xss-Protection
Pragma
Access-Control-Allow-Origin
X-Download-Options
X-Request-Id
Content-Language
Access-Control-Allow-Methods
Access-Control-Allow-Headers
Accept-CH
X-UA-Compatible
X-Amz-Version-Id
Expect-CT
Content-Security-Policy-Report-Only
X-Permitted-Cross-Domain-Policies
X-DNS-Prefetch-Control
X-Envoy-Upstream-Service-Time
X-Varnish
X-Cache-Hits
X-Dns-Prefetch-Control
Access-Control-Allow-Credentials
X-Amz-Request-Id
X-Amz-Id-2
P3P
CF-Cache-Status
X-Runtime
Report-To
X-Served-By
CF-RAY
Accept-Ch
NEL
Permissions-Policy
X-Cacheable
X-D2id
X-Meli-Trace-Bu
X-Meli-Trace-Platform
X-Request-Device-Id
X-Meli-Trace-Site
X-Vhost
X-Dispatcher
X-Content-Type
X-Element-Page-Cache
X-Generator
X-Navigation-Version
X-AspNet-Version
Alt-Svc
Feature-Policy
X-Drupal-Cache
Status
Server-Timing
Accept-Ch-Lifetime
X-Drupal-Dynamic-Cache
Access-Control-Max-Age
X-Proxy-Cache
X-Server
X-Backend
Access-Control-Expose-Headers
X-Content-Security-Policy
Cache-Tag
Accept-CH-Lifetime
X-Amz-Server-Side-Encryption
X-Amzn-Trace-Id
X-Varnish-Cache
X-Adblock-Key
Xkey
X-Amz-Replication-Status
X-Timer
X-WebKit-CSP
X-Amz-Rid
Content-Encoding
X-AspNetMvc-Version
X-Cache-Status
X-ProcessESI
X-RemovedCookies
X-Cacheable-TTL
Xet-Cookie
Selected-Fe
X-T
X-Timing-Wait
X-Proxy-Build
Front
Apigw-Requestid
X-Page-Speed
X-Hl-Ver
CF-Ray
SPRequestGuid
SPRequestDuration
X-MS-InvokeApp
X-SharePointHealthScore
SPIisLatency
X-AH-Environment
Request-Id
X-Backend-Server
AMP-Access-Control-Allow-Source-Origin
CloudFront-Viewer-Country
X-Robots-Tag
MicrosoftSharePointTeamServices
X-Mly-Id
X-Host
X-Clientip
Mail-Subject
Expect-Staple
X-Correlation-Id
X-Device
X-SRCache-Store-Status
X-SRCache-Key
X-SRCache-Fetch-Status
Countrycode
We-Hiring
X-Request-Received
X-Request-Processing-Time
X-Iinfo
Grace
X-Rq
X-Viewer-Country
X-Via
Critical-Ch
X-ProxyCache-Status
X-BYPASS-REASON
X-ProxyCache-Key
X-Mod-Pagespeed
X-Oneagent-Js-Injection
X-Ruxit-Js-Agent
X-Request-ID
X-Age
X-Amz-Apigw-Id
X-Amzn-RequestId
X-CDN
X-NODE
Surrogate-Control
X-URL
X-Turbo-Charged-By
X-Ws-Request-Id
Expect-Ct
Timing-Allow-Origin
X-Api-Version
X-Node
Cf-Edge-Cache
Cloudfront-Viewer-Country
X-Redirect
X-VC
X-LiteSpeed-Cache
X-Cache-FS-Status
Request-Context
X-Vc
Protected
Fastly-Restarts
X-Azure-Ref
X-Server-Powered-By
EagleId
Cf-Apo-Via
X-Readtime
X-Server-Id
X-OneAgent-JS-Injection
X-User
X-Provided-By
X-Cache-Time
X-Cache-Group
X-Ruxit-JS-Agent
X-Cdn
X-Pantheon-Styx-Hostname
X-Styx-Req-Id
X-Cache-TTL
Content-Location
X-CST
Allow
X-HW
X-Status
X-Debug-Info
Liferay-Portal
Resin-Trace
Cf-Railgun
X-Litespeed-Cache
X-Ua-Device
X-Template
X-Country-Code
X-Language