urlscan.io logo urlscan.io
SecurityTrails logo

docusignsfilexx.pages.dev Open in urlscan Pro
2a06:98c1:3120::3  Malicious Activity! Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://docusignsfilexx.pages.dev/
Effective URL: https://docusignsfilexx.pages.dev/
Submission: On February 29 via api from US — Scanned from NL
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 3 IPs in 2 countries across 3 domains to perform 5 HTTP transactions. The main IP is 2a06:98c1:3120::3, located in United States and belongs to CLOUDFLARENET, US. The main domain is docusignsfilexx.pages.dev.
TLS certificate: Issued by GTS CA 1P5 on February 15th 2024. Valid for: 3 months.
This is the only time docusignsfilexx.pages.dev was scanned on urlscan.io!

urlscan.io Verdict: Potentially Malicious

Targeting these brands: Microsoft (Consumer)

Domain & IP information

IP Address AS Autonomous System
1 2a06:98c1:312... 13335 (CLOUDFLAR...)
1 2a01:4f8:231:... 24940 (HETZNER-AS)
3 2606:4700::68... 13335 (CLOUDFLAR...)
5 3
Apex Domain
Subdomains		 Transfer
3 jsdelivr.net
cdn.jsdelivr.net — Cisco Umbrella Rank: 306
4 KB
1 tebi.io
177eckliiwsnm4.s3.tebi.io
1 MB
1 pages.dev
docusignsfilexx.pages.dev
772 B
5 3
Domain Requested by
3 cdn.jsdelivr.net docusignsfilexx.pages.dev
1 177eckliiwsnm4.s3.tebi.io docusignsfilexx.pages.dev
1 docusignsfilexx.pages.dev
5 3

This site contains links to these domains. Also see Links.

Domain
login.live.com
www.microsoft.com
privacy.microsoft.com
Subject Issuer Validity Valid
docusignsfilexx.pages.dev
GTS CA 1P5		 2024-02-15 -
2024-05-15		 3 months crt.sh
*.s3.tebi.io
R3		 2024-01-27 -
2024-04-26		 3 months crt.sh
sni.cloudflaressl.com
Cloudflare Inc ECC CA-3		 2023-05-02 -
2024-05-01		 a year crt.sh

This page contains 1 frames:

Primary Page: https://docusignsfilexx.pages.dev/
Frame ID: F0B5789205671AF5C7B22EBF373CBDCA
Requests: 5 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Sign in to your account

Page URL History Show full URLs

  1. http://docusignsfilexx.pages.dev/ HTTP 307
    https://docusignsfilexx.pages.dev/ Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • //cdn\.jsdelivr\.net/

Page Statistics

5
Requests

100 %
HTTPS

100 %
IPv6

3
Domains

3
Subdomains

3
IPs

2
Countries

1322 kB
Transfer

1324 kB
Size

0
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. http://docusignsfilexx.pages.dev/ HTTP 307
    https://docusignsfilexx.pages.dev/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

5 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
docusignsfilexx.pages.dev/
Redirect Chain
  • http://docusignsfilexx.pages.dev/
  • https://docusignsfilexx.pages.dev/
311 B
772 B 		Document
General
Check archive.org
Download Go to
Full URL
https://docusignsfilexx.pages.dev/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a06:98c1:3120::3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
3b455870036a047724c39da6de1d32b38e7676956b4101987e625871a1227be2
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.94 Safari/537.36
accept-language
nl-NL,nl;q=0.9

Response headers

access-control-allow-origin
*
alt-svc
h3=":443"; ma=86400
cache-control
public, max-age=0, must-revalidate
cf-ray
85d2dc4cce55656d-AMS
content-encoding
br
content-type
text/html; charset=utf-8
date
Thu, 29 Feb 2024 18:09:49 GMT
etag
W/"179aab1cf49bb33a76c0eefdf3b024f6"
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=wTfHt4d0gco%2B%2BppbKXIcbaPGAGcSshEeAaVO4vrokGUJaaTI3b95%2FBrIkxWJp61enW2KQb5Ptbjw%2BwZwa36YdBH31LRoL3LB74dhuBtHh70TXs%2BTWiWBSxBtjkCO4p2uzR2Js7EMIZieklgoDoCGG7L%2FblMM1Vdj"}],"group":"cf-nel","max_age":604800}
server
cloudflare
vary
Accept-Encoding
x-content-type-options
nosniff

Redirect headers

Cross-Origin-Resource-Policy
Cross-Origin
Location
https://docusignsfilexx.pages.dev/
Non-Authoritative-Reason
HSTS
32651523cec0aaf78abde4e29da1029e.min.js
177eckliiwsnm4.s3.tebi.io/ef5dcdb7-a6e2-4726-9eeb-bbac66a0d034/404026ce-11f0-4acd-bd4e-e31bfbd231fc/ 		1 MB
1 MB 		Script
General
Check archive.org
Download Go to
Full URL
https://177eckliiwsnm4.s3.tebi.io/ef5dcdb7-a6e2-4726-9eeb-bbac66a0d034/404026ce-11f0-4acd-bd4e-e31bfbd231fc/32651523cec0aaf78abde4e29da1029e.min.js
Requested by
Host: docusignsfilexx.pages.dev
URL: https://docusignsfilexx.pages.dev/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a01:4f8:231:2223::2 Ehingen, Germany, ASN24940 (HETZNER-AS, DE),
Reverse DNS
Software
Caddy /
Resource Hash
557ca3372dd570aabbc1800f40656374ed54d387bbe32fe974128255ac262f0a

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://docusignsfilexx.pages.dev/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.94 Safari/537.36

Response headers

x-tb-replication
USE:1,DE:1,USW:1
date
Thu, 29 Feb 2024 18:09:49 GMT
last-modified
Thu, 15 Feb 2024 16:33:19 GMT
server
Caddy
x-amz-request-id
s3/1709230189.801374/itDc
etag
"38631db304fb3a7b46ba2ca4bd30cc9d"
content-type
text/javascript
accept-ranges
bytes
alt-svc
h3=":443"; ma=2592000
content-length
1347853
x-amz-id-2
meta-de-4-1
2_bc3d32a696895f78c19df6c717586a5d.svg
cdn.jsdelivr.net/gh/jmresult/ottp_off@master/images/backgrounds/ 		2 KB
1 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.jsdelivr.net/gh/jmresult/ottp_off@master/images/backgrounds/2_bc3d32a696895f78c19df6c717586a5d.svg
Requested by
Host: docusignsfilexx.pages.dev
URL: https://docusignsfilexx.pages.dev/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6810:5514 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
0e88b6fcbb8591edfd28184fa70a04b6dd3af8a14367c628edd7caba32e58c68
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://docusignsfilexx.pages.dev/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.94 Safari/537.36

Response headers

date
Thu, 29 Feb 2024 18:09:50 GMT
strict-transport-security
max-age=31536000; includeSubDomains; preload
x-content-type-options
nosniff
cf-cache-status
HIT
nel
{"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
content-encoding
br
x-jsd-version
master
x-cache
MISS, HIT
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
x-served-by
cache-fra-eddf8230041-FRA, cache-lga21968-LGA
x-jsd-version-type
branch
server
cloudflare
etag
W/"748-kZHLFWowo+15xEwKFslRWej/aJ0"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=A92aNtf2IdZoTwnG6jjOe9Cih71bzhGAS6n0M7twQFvnjnIdWP6FIKW224%2B9l8NQht5bMCjNTgKhvPLKsdxTFFgDRZXWN9%2F7UUcuUFwtjfyO94%2F5r308iacwaJVPSW867HxA7rsPKg1GdhS3qvA%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/svg+xml
access-control-allow-origin
*
access-control-expose-headers
*
cache-control
public, max-age=604800, s-maxage=43200
timing-allow-origin
*
cf-ray
85d2dc50e86706c6-AMS
microsoft_logo_ee5c8d9fb6248c938fd0dc19370e90bd.svg
cdn.jsdelivr.net/gh/jmresult/ottp_off@master/images/ 		4 KB
2 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.jsdelivr.net/gh/jmresult/ottp_off@master/images/microsoft_logo_ee5c8d9fb6248c938fd0dc19370e90bd.svg
Requested by
Host: docusignsfilexx.pages.dev
URL: https://docusignsfilexx.pages.dev/?2da2baf796574=U2FsdGVkX1%2FeUfTR6UFlkkL7F4RWMG3CJO8eoYhjoz%2BlvAQENLMNrhmWBph9PFQ86is8Iew8n8CIQuVgiYyTouhzXbx9%2B5E0kuri2DQHn24JP9kfEFs%2FgQnC9HykQmz6pS%2FzEgN8WACzs%2F1S%2BSRJBLlPm%2FrxH33yPTxcdT07JNaU%2Fe79HAtJLgrpSgvIS5x9r4KX%2FJuRnEG2BIVZVLx3SJWfs%2B7qomQgGcUEmsP%2B%2FLCpQ5wa70ph5Sg0CY38KrSVAlGRahkphccNJZKEGWrOHkJCha9DCyXsyTzsRB8hZM6rczIDsjlFyl1IzUCwFLc3D443XiMmUDOm08Pi9%2FNKCBHwwh60ABHqylkOr2%2BRhJ9TplO61djb1O6Ms572Kvoeh61qDKWEB6Jx4XdarzjmNiqjOm0Fct53rTNHuIa2o4g0iiF6hgd8SuibT7cACqQmH0uoLmM7vn9IHF1I3cT%2B2pLxEIhJpZ4EzfR3gjnWRKyz6JihXv2usYsR0fWV5QKP1nxroDQHhhC4pnC8zfZqFqNO5wSvCXSaiSIt1%2BHtBhGQszwTEoLoMe9dzfe3qHFI7XQUO7dxhWN%2Fw%2BujhdfPg31asuacQPDIF26PPZkq11F43FGs48lJKuCGwEnSaCv8Hz3Nb%2B7qBAHMe3BE31QvkC0EvRHNKgd9Nn6LTLNWdTD9%2BqrOjU9OuuMUdDYSxK%2FGdQFc5Smqzdo4bIkHvl9swXADFQFhvcgSZ3qNysN1Yx3XitipZEflDXWddzlgnsP2ZTLe196hHrvOd3hg3VHyoNdZd7OFWaJWrJvaEvp701rtCh%2BgauWdnB1kqlptt%2BaLAV7aQQKxOofpk3Ld%2FjDcwi1jTMaWwFW0HvZ9l3TLfZXINcEr8GA1nVoQjFzgW1TeKl3LdVi2TnT%2BsTbzK0h%2BzzEM60Lp%2BEQqQ8cja7EFgwsuFBi6EBKMCkkxtEhSwB%2BPQqfizQTi7iGluxoKFc3cNIMBrnSK%2Ff%2B1yB%2FAysDHLrMfkI58l6lzN6E2vv%2BZCJd2jQeixWUNY9OLtBcpSD55vhjlEJV2UgD8jYoTDad98yQcGMLacg%2FKchop%2BEmaDPVINT0EEJFS0zILKKU2IYflc1hUBtCERQOLESQSzERtjjhOFCF7Dndr37LhIaMffaCrNsZPyApeLD7HKpKCQidSynsSbeTI1PStn1lzgXxKgRPHH46M1Rit5GXH7tzqVx0JoU1gvJaTs71HJVTC4jQnC2QWbyZeQIrg4Ti9taj2AI%2FKLn6O4yWB%2FOG1Y%2FjFkcmJkE3kjannFaX%2FoShb7ChFVIlUH0CXeB8auQallzwyGWxk9oaW94KzBwwnd2MxdMY%2F4TS9zBhDIUM6q%2BoynzPM%2Byl7oO%2F%2BaalWHd7QYOC9to4wD4OW%2BzQ8BunweCXeAI6cs4%2BcYmZDL39vfDPzz0OdOdtpm1TB86jXalRJA3qVm9aki0KF0MlEkn3nBriAj0pDGF4wEvMeFgdb5uILTNC0iA%3D%3D
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6810:5514 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
04d29248ee3a13a074518c93a18d6efc491bf1f298f9b87fc989a6ae4b9fad7a
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://docusignsfilexx.pages.dev/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.94 Safari/537.36

Response headers

date
Thu, 29 Feb 2024 18:09:50 GMT
strict-transport-security
max-age=31536000; includeSubDomains; preload
x-content-type-options
nosniff
cf-cache-status
HIT
nel
{"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
content-encoding
br
x-jsd-version
master
x-cache
HIT, MISS
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
x-served-by
cache-fra-etou8220067-FRA, cache-lga21927-LGA
x-jsd-version-type
branch
server
cloudflare
etag
W/"e43-0BoicgkYt4Ezi1u/kgKyQaX5nuQ"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=EBG7g6zE4Oiz0EtT36luLEC6MUY0NDnhxNWeGcn%2B%2BSG4J2BNhVpI11Sn%2Bc00nFhsPKTheysFRn1NtqZzR5A4%2FNTKySO1PXInH9mYheFZfN7f3tVGIXMlmsG1fIgpK3xHWDDZvsmkMJNZ19T5Sco%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/svg+xml
access-control-allow-origin
*
access-control-expose-headers
*
cache-control
public, max-age=604800, s-maxage=43200
timing-allow-origin
*
cf-ray
85d2dc50e86806c6-AMS
signin-options_4e48046ce74f4b89d45037c90576bfac.svg
cdn.jsdelivr.net/gh/jmresult/ottp_off@master/images/ 		2 KB
1 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.jsdelivr.net/gh/jmresult/ottp_off@master/images/signin-options_4e48046ce74f4b89d45037c90576bfac.svg
Requested by
Host: docusignsfilexx.pages.dev
URL: https://docusignsfilexx.pages.dev/?2da2baf796574=U2FsdGVkX1%2FeUfTR6UFlkkL7F4RWMG3CJO8eoYhjoz%2BlvAQENLMNrhmWBph9PFQ86is8Iew8n8CIQuVgiYyTouhzXbx9%2B5E0kuri2DQHn24JP9kfEFs%2FgQnC9HykQmz6pS%2FzEgN8WACzs%2F1S%2BSRJBLlPm%2FrxH33yPTxcdT07JNaU%2Fe79HAtJLgrpSgvIS5x9r4KX%2FJuRnEG2BIVZVLx3SJWfs%2B7qomQgGcUEmsP%2B%2FLCpQ5wa70ph5Sg0CY38KrSVAlGRahkphccNJZKEGWrOHkJCha9DCyXsyTzsRB8hZM6rczIDsjlFyl1IzUCwFLc3D443XiMmUDOm08Pi9%2FNKCBHwwh60ABHqylkOr2%2BRhJ9TplO61djb1O6Ms572Kvoeh61qDKWEB6Jx4XdarzjmNiqjOm0Fct53rTNHuIa2o4g0iiF6hgd8SuibT7cACqQmH0uoLmM7vn9IHF1I3cT%2B2pLxEIhJpZ4EzfR3gjnWRKyz6JihXv2usYsR0fWV5QKP1nxroDQHhhC4pnC8zfZqFqNO5wSvCXSaiSIt1%2BHtBhGQszwTEoLoMe9dzfe3qHFI7XQUO7dxhWN%2Fw%2BujhdfPg31asuacQPDIF26PPZkq11F43FGs48lJKuCGwEnSaCv8Hz3Nb%2B7qBAHMe3BE31QvkC0EvRHNKgd9Nn6LTLNWdTD9%2BqrOjU9OuuMUdDYSxK%2FGdQFc5Smqzdo4bIkHvl9swXADFQFhvcgSZ3qNysN1Yx3XitipZEflDXWddzlgnsP2ZTLe196hHrvOd3hg3VHyoNdZd7OFWaJWrJvaEvp701rtCh%2BgauWdnB1kqlptt%2BaLAV7aQQKxOofpk3Ld%2FjDcwi1jTMaWwFW0HvZ9l3TLfZXINcEr8GA1nVoQjFzgW1TeKl3LdVi2TnT%2BsTbzK0h%2BzzEM60Lp%2BEQqQ8cja7EFgwsuFBi6EBKMCkkxtEhSwB%2BPQqfizQTi7iGluxoKFc3cNIMBrnSK%2Ff%2B1yB%2FAysDHLrMfkI58l6lzN6E2vv%2BZCJd2jQeixWUNY9OLtBcpSD55vhjlEJV2UgD8jYoTDad98yQcGMLacg%2FKchop%2BEmaDPVINT0EEJFS0zILKKU2IYflc1hUBtCERQOLESQSzERtjjhOFCF7Dndr37LhIaMffaCrNsZPyApeLD7HKpKCQidSynsSbeTI1PStn1lzgXxKgRPHH46M1Rit5GXH7tzqVx0JoU1gvJaTs71HJVTC4jQnC2QWbyZeQIrg4Ti9taj2AI%2FKLn6O4yWB%2FOG1Y%2FjFkcmJkE3kjannFaX%2FoShb7ChFVIlUH0CXeB8auQallzwyGWxk9oaW94KzBwwnd2MxdMY%2F4TS9zBhDIUM6q%2BoynzPM%2Byl7oO%2F%2BaalWHd7QYOC9to4wD4OW%2BzQ8BunweCXeAI6cs4%2BcYmZDL39vfDPzz0OdOdtpm1TB86jXalRJA3qVm9aki0KF0MlEkn3nBriAj0pDGF4wEvMeFgdb5uILTNC0iA%3D%3D
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6810:5514 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
8e6db1634f1812d42516778fc890010aa57f3e39914fb4803df2c38abbf56d93
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://docusignsfilexx.pages.dev/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.94 Safari/537.36

Response headers

date
Thu, 29 Feb 2024 18:09:50 GMT
strict-transport-security
max-age=31536000; includeSubDomains; preload
x-content-type-options
nosniff
cf-cache-status
HIT
nel
{"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
content-encoding
br
x-jsd-version
master
x-cache
HIT, HIT
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
x-served-by
cache-fra-eddf8230096-FRA, cache-lga21934-LGA
x-jsd-version-type
branch
server
cloudflare
etag
W/"638-SkGztR7Xh/ezMpQgLaciIMfNLDI"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=mVgpj%2BSzRVqia9UTR1fuZr1GAHSiyRyhBn1ftd5nkPMPR%2BVqvoUvKaF9KuslEU7qc4jVkdmBgqEbVYJkO8C31qApI1tCq0V6I41%2BaLVzqh9GdLX1TPMdgFDIVUad%2BlWnxemei9IwX0lohZrAFbo%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/svg+xml
access-control-allow-origin
*
access-control-expose-headers
*
cache-control
public, max-age=604800, s-maxage=43200
timing-allow-origin
*
cf-ray
85d2dc50e86a06c6-AMS

Verdicts & Comments Add Verdict or Comment

Potentially malicious activity detected
Disclaimer: These verdicts should be used to detect potentially malicious websites, not as a final verdict!

urlscan

Phishing against: Microsoft (Consumer)

123 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

function| ej function| e function| c function| b function| a function| Zr function| Qa function| tn function| en function| an function| on function| $a function| ue function| rn function| Fe function| Xa function| da function| io function| ii function| hi function| ro function| Le function| so function| uo function| fo function| go function| ca function| vo function| wo function| ko function| er object| ma object| Yt object| ji object| So string| Fo string| zo object| Ft object| Li undefined| Di object| ln function| ua function| f object| de function| Ao function| sn object| pa function| g function| dn function| Ue function| ai object| fa object| ha object| ga object| xa object| cn function| Ii string| To string| Co string| _o string| Mo string| Bo string| Eo string| Oo string| Do string| Lo string| Io string| jo string| Ho object| Dt string| Po string| No string| Ro string| qo string| Uo string| Vo string| Wo string| Go string| Jo string| Yo string| Qo string| $o string| Ko string| Xo object| pe function| va object| S object| Ie object| Pi object| fe object| Zo function| gi function| tr object| ar object| ir function| ba object| zt string| or string| rr string| nr string| lr object| I object| He object| Ve string| Ee object| je string| sr function| Rn function| dr function| qn function| Un function| Vn function| Wn function| cr function| Ni function| Ri function| Gn function| Jn function| ur function| wa function| Yn function| Qn function| pushSubmit

0 Cookies

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header Value
X-Content-Type-Options nosniff