training.knowbe4.com Open in urlscan Pro
52.20.167.196  Malicious Activity! Public Scan

Submitted URL: http://us-api.mimecast.com.kb4.io/XcmVrjaXBpZWe50X2lkPTnMxMTg5OINTI0CMCZjYW1wUYWdlnbl9ydW5faWQ9OTA0VOTU1JmFjdGlvbj1jbGljayZ1cmw9aH...
Effective URL: https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Submission: On August 29 via manual from US

Summary

This website contacted 4 IPs in 2 countries across 3 domains to perform 12 HTTP transactions. The main IP is 52.20.167.196, located in Ashburn, United States and belongs to AMAZON-AES - Amazon.com, Inc., US. The main domain is training.knowbe4.com.
TLS certificate: Issued by Go Daddy Secure Certificate Authority... on March 31st 2016. Valid for: 3 years.
This is the only time training.knowbe4.com was scanned on urlscan.io!

urlscan.io Verdict: Potentially Malicious

Targeting these brands: Phishing Simulation (Internet)

Domain & IP information

IP Address AS Autonomous System
8 52.20.167.196 14618 (AMAZON-AES)
1 207.91.31.172 7029 (WINDSTREAM)
2 2a02:26f0:10c... 20940 (AKAMAI-ASN1)
1 17.171.49.241 714 (APPLE-ENG...)
12 4
Domain Requested by
8 training.knowbe4.com training.knowbe4.com
2 images.apple.com training.knowbe4.com
1 outsideapple.apple.com training.knowbe4.com
1 www.lgfcu.org training.knowbe4.com
12 4

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

Domain
us-api.mimecast.com.kb4.io
Subject Issuer Validity Valid
knowbe4.com
Go Daddy Secure Certificate Authority - G2
2016-03-31 -
2019-02-25
3 years crt.sh
www.lgfcu.org
Symantec Class 3 EV SSL CA - G3
2017-01-26 -
2019-03-27
2 years crt.sh

This page contains 1 frames:

Primary Page: https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Frame ID: 13630.1
Requests: 12 HTTP requests in this frame

Screenshot


Page Statistics

12
Requests

75 %
HTTPS

25 %
IPv6

3
Domains

4
Subdomains

4
IPs

2
Countries

819 kB
Transfer

3226 kB
Size

0
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

12 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request 5c293115fa17
training.knowbe4.com/pages/
Redirect Chain
  • http://us-api.mimecast.com.kb4.io/XcmVrjaXBpZWe50X2lkPTnMxMTg5OINTI0CMCZjYW1wUYWdlnbl9ydW5faWQ9OTA0VOTU1JmFjdGlvbj1jbGljayZ1cmw9aHR0cHM6Ly90cmFpbmluZy5rbm93YmU0LmNvbS9wYWdlcy81YzI5MzExNWZhMTc=
  • https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
16 KB
4 KB
Document
General
Full URL
https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Protocol
SPDY
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
52.20.167.196 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),
Reverse DNS
ec2-52-20-167-196.compute-1.amazonaws.com
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
df867c3294c93041f68fdfb5449659571a0f6da0eeb613e61549ee218e19e0ae
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/60.0.3112.101 Safari/537.36

Response headers

x-runtime
0.026391
date
Tue, 29 Aug 2017 16:46:34 GMT
content-encoding
gzip
x-content-type-options
nosniff
server
nginx/1.4.6 (Ubuntu)
x-frame-options
SAMEORIGIN
content-type
text/html; charset=utf-8
status
200, 200 OK
cache-control
max-age=0, private, must-revalidate
vary
Accept-Encoding, Origin
x-xss-protection
1; mode=block
x-request-id
75f422a8-94eb-4a73-8126-f3e1c4a7209a

Redirect headers

X-Runtime
0.050337
Date
Tue, 29 Aug 2017 16:46:34 GMT
X-Content-Type-Options
nosniff
Server
nginx/1.4.6 (Ubuntu)
Status
302 Found
X-Frame-Options
SAMEORIGIN
Content-Type
text/html; charset=utf-8
Location
https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Cache-Control
no-cache
Transfer-Encoding
chunked
Connection
keep-alive
Vary
Origin
X-XSS-Protection
1; mode=block
X-Request-Id
96efa019-0588-4d0c-8770-b66b577ee1c9
application-810250b25f18eca662cc77e8c830faa2aaa2d4375e11b7ae5d52276cfdec46a8.js
training.knowbe4.com/assets/
3 MB
787 KB
Script
General
Full URL
https://training.knowbe4.com/assets/application-810250b25f18eca662cc77e8c830faa2aaa2d4375e11b7ae5d52276cfdec46a8.js
Requested by
Host: training.knowbe4.com
URL: https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Protocol
SPDY
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
52.20.167.196 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),
Reverse DNS
ec2-52-20-167-196.compute-1.amazonaws.com
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
810250b25f18eca662cc77e8c830faa2aaa2d4375e11b7ae5d52276cfdec46a8

Request headers

Referer
https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/60.0.3112.101 Safari/537.36

Response headers

date
Tue, 29 Aug 2017 16:46:34 GMT
content-encoding
gzip
last-modified
Mon, 28 Aug 2017 14:56:03 GMT
server
nginx/1.4.6 (Ubuntu)
etag
"59a42f03-c49dc"
vary
Accept-Encoding
content-type
application/x-javascript
status
200
cache-control
max-age=315360000, public
content-length
805340
expires
Thu, 31 Dec 2037 23:55:55 GMT
modernizr-654222debe8018b12f1993ceddff30dc163a7d5008d79869c399d6d167321f97.js
training.knowbe4.com/assets/
50 KB
15 KB
Script
General
Full URL
https://training.knowbe4.com/assets/modernizr-654222debe8018b12f1993ceddff30dc163a7d5008d79869c399d6d167321f97.js
Requested by
Host: training.knowbe4.com
URL: https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Protocol
SPDY
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
52.20.167.196 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),
Reverse DNS
ec2-52-20-167-196.compute-1.amazonaws.com
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
654222debe8018b12f1993ceddff30dc163a7d5008d79869c399d6d167321f97

Request headers

Referer
https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/60.0.3112.101 Safari/537.36

Response headers

date
Tue, 29 Aug 2017 16:46:34 GMT
content-encoding
gzip
last-modified
Mon, 28 Aug 2017 14:56:03 GMT
server
nginx/1.4.6 (Ubuntu)
etag
"59a42f03-3d69"
vary
Accept-Encoding
content-type
application/x-javascript
status
200
cache-control
max-age=315360000, public
content-length
15721
expires
Thu, 31 Dec 2037 23:55:55 GMT
sei-modal-3fcf13edc4386a4a52e8ac7316ac98aa8c303630b572ce1b09c2bc569a1c3002.css
training.knowbe4.com/assets/
617 B
356 B
Stylesheet
General
Full URL
https://training.knowbe4.com/assets/sei-modal-3fcf13edc4386a4a52e8ac7316ac98aa8c303630b572ce1b09c2bc569a1c3002.css
Requested by
Host: training.knowbe4.com
URL: https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Protocol
SPDY
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
52.20.167.196 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),
Reverse DNS
ec2-52-20-167-196.compute-1.amazonaws.com
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
3fcf13edc4386a4a52e8ac7316ac98aa8c303630b572ce1b09c2bc569a1c3002

Request headers

Referer
https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/60.0.3112.101 Safari/537.36

Response headers

date
Tue, 29 Aug 2017 16:46:34 GMT
content-encoding
gzip
last-modified
Mon, 28 Aug 2017 14:56:03 GMT
server
nginx/1.4.6 (Ubuntu)
etag
"59a42f03-15b"
vary
Accept-Encoding
content-type
text/css
status
200
cache-control
max-age=315360000, public
content-length
347
expires
Thu, 31 Dec 2037 23:55:55 GMT
sei-tooltip-765b79bc8e03650717748466e848ae546208dafc86bc4903d33d56badb3f67b1.css
training.knowbe4.com/assets/
2 KB
564 B
Stylesheet
General
Full URL
https://training.knowbe4.com/assets/sei-tooltip-765b79bc8e03650717748466e848ae546208dafc86bc4903d33d56badb3f67b1.css
Requested by
Host: training.knowbe4.com
URL: https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Protocol
SPDY
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
52.20.167.196 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),
Reverse DNS
ec2-52-20-167-196.compute-1.amazonaws.com
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
765b79bc8e03650717748466e848ae546208dafc86bc4903d33d56badb3f67b1

Request headers

Referer
https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/60.0.3112.101 Safari/537.36

Response headers

date
Tue, 29 Aug 2017 16:46:34 GMT
content-encoding
gzip
last-modified
Mon, 28 Aug 2017 14:56:03 GMT
server
nginx/1.4.6 (Ubuntu)
etag
"59a42f03-22b"
vary
Accept-Encoding
content-type
text/css
status
200
cache-control
max-age=315360000, public
content-length
555
expires
Thu, 31 Dec 2037 23:55:55 GMT
sei-flag-5d737a9fc0b8eb1f5c0718dc7e6c9d994112556b34c564b7ababf85152ebe82d.css
training.knowbe4.com/assets/
1 KB
533 B
Stylesheet
General
Full URL
https://training.knowbe4.com/assets/sei-flag-5d737a9fc0b8eb1f5c0718dc7e6c9d994112556b34c564b7ababf85152ebe82d.css
Requested by
Host: training.knowbe4.com
URL: https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Protocol
SPDY
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
52.20.167.196 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),
Reverse DNS
ec2-52-20-167-196.compute-1.amazonaws.com
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
5d737a9fc0b8eb1f5c0718dc7e6c9d994112556b34c564b7ababf85152ebe82d

Request headers

Referer
https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/60.0.3112.101 Safari/537.36

Response headers

date
Tue, 29 Aug 2017 16:46:34 GMT
content-encoding
gzip
last-modified
Mon, 28 Aug 2017 14:56:03 GMT
server
nginx/1.4.6 (Ubuntu)
etag
"59a42f03-20c"
vary
Accept-Encoding
content-type
text/css
status
200
cache-control
max-age=315360000, public
content-length
524
expires
Thu, 31 Dec 2037 23:55:55 GMT
logo.png
www.lgfcu.org/
6 KB
6 KB
Image
General
Full URL
https://www.lgfcu.org/logo.png
Requested by
Host: training.knowbe4.com
URL: https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
207.91.31.172 Greenville, United States, ASN7029 (WINDSTREAM - Windstream Communications Inc, US),
Reverse DNS
h172.31.91.207.static.ip.windstream.net
Software
Apache /
Resource Hash
45b8f3998d81bc95b490b2c6d579108efcf46629ace0d784abaf18a94f9f7c01
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN

Request headers

Referer
https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/60.0.3112.101 Safari/537.36

Response headers

Date
Tue, 29 Aug 2017 16:26:26 GMT
X-Content-Type-Options
nosniff
Last-Modified
Thu, 25 Aug 2016 19:41:45 GMT
Server
Apache
X-Frame-Options
SAMEORIGIN
Content-Type
image/png
Cache-Control
max-age=1209600
Connection
close
Accept-Ranges
bytes
Content-Length
6444
Expires
Tue, 12 Sep 2017 16:26:26 GMT
top.gif
images.apple.com/cbx/global/ds/iforgot/i/
512 B
512 B
Image
General
Full URL
http://images.apple.com/cbx/global/ds/iforgot/i/top.gif
Requested by
Host: training.knowbe4.com
URL: https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Protocol
HTTP/1.1
Server
2a02:26f0:10c:391::1aca , European Union, ASN20940 (AKAMAI-ASN1, US),
Reverse DNS
Software
Apache /
Resource Hash
db53f1988fcd3e7d287a38b5a5ed384b6d7900a48ee146a4c716d59d408387b7

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/60.0.3112.101 Safari/537.36

Response headers

Date
Tue, 29 Aug 2017 16:46:35 GMT
Last-Modified
Tue, 15 Dec 2009 19:31:37 GMT
Server
Apache
Content-Type
image/gif
Access-Control-Allow-Origin
https://www.apple.com
Cache-Control
max-age=1179
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
512
nnCoection
close
Expires
Tue, 29 Aug 2017 17:06:14 GMT
bottom.gif
images.apple.com/cbx/global/ds/iforgot/i/
312 B
312 B
Image
General
Full URL
http://images.apple.com/cbx/global/ds/iforgot/i/bottom.gif
Requested by
Host: training.knowbe4.com
URL: https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Protocol
HTTP/1.1
Server
2a02:26f0:10c:391::1aca , European Union, ASN20940 (AKAMAI-ASN1, US),
Reverse DNS
Software
Apache /
Resource Hash
b4a4d5d632dc3c184d6a777c7308514a2786a4c6cd886e88a72b9a8b2885c393

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/60.0.3112.101 Safari/537.36

Response headers

Date
Tue, 29 Aug 2017 16:46:35 GMT
Last-Modified
Tue, 15 Dec 2009 19:31:37 GMT
Server
Apache
Content-Type
image/gif
Access-Control-Allow-Origin
https://www.apple.com
Cache-Control
max-age=1889
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
312
nnCoection
close
Expires
Tue, 29 Aug 2017 17:18:04 GMT
spacer4.gif
outsideapple.apple.com/img/APPLE_EMAIL_LINK/
43 B
43 B
Image
General
Full URL
http://outsideapple.apple.com/img/APPLE_EMAIL_LINK/spacer4.gif
Requested by
Host: training.knowbe4.com
URL: https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Protocol
HTTP/1.1
Server
17.171.49.241 Cupertino, United States, ASN714 (APPLE-ENGINEERING - Apple Inc., US),
Reverse DNS
mdn-outsideapple-prod.apple.com
Software
Shield /
Resource Hash
b1442e85b03bdcaf66dc58c7abb98745dd2687d86350be9a298a1d9382ac849b

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/60.0.3112.101 Safari/537.36

Response headers

Date
Tue, 29 Aug 2017 16:46:35 GMT
Last-Modified
Thu, 14 Oct 2004 22:19:32 GMT
Server
Shield
ETag
"10d979-2b-3e66fb45ec500"
Content-Type
image/gif
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
43
plugins
training.knowbe4.com/pages/
59 B
91 B
XHR
General
Full URL
https://training.knowbe4.com/pages/plugins
Requested by
Host: training.knowbe4.com
URL: https://training.knowbe4.com/assets/application-810250b25f18eca662cc77e8c830faa2aaa2d4375e11b7ae5d52276cfdec46a8.js
Protocol
SPDY
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
52.20.167.196 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),
Reverse DNS
ec2-52-20-167-196.compute-1.amazonaws.com
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
3224585e809e5e16eeaa30e85604f25035ba132b34692f2acd173ff62de8948c
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

Accept
*/*
Referer
https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Origin
https://training.knowbe4.com
X-Requested-With
XMLHttpRequest
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/60.0.3112.101 Safari/537.36
Content-Type
application/x-www-form-urlencoded; charset=UTF-8

Response headers

date
Tue, 29 Aug 2017 16:46:35 GMT
content-encoding
gzip
x-content-type-options
nosniff
status
200, 200 OK
vary
Accept-Encoding, Origin
x-xss-protection
1; mode=block
x-request-id
01dc1a31-6434-4e33-8f35-5efe7f73edc3
x-runtime
0.032809
server
nginx/1.4.6 (Ubuntu)
x-frame-options
SAMEORIGIN
access-control-max-age
0
access-control-allow-methods
GET, POST, DELETE, PUT, PATCH, OPTIONS, HEAD
content-type
application/json; charset=utf-8
access-control-allow-origin
https://training.knowbe4.com
access-control-expose-headers
cache-control
max-age=0, private, must-revalidate
access-control-allow-credentials
true
sei-flag-fc5e7621ba0e98c5c6728e3b2bdf802311c0a0953a05e60a7551cb0c7bed00a9.png
training.knowbe4.com/assets/
3 KB
3 KB
Image
General
Full URL
https://training.knowbe4.com/assets/sei-flag-fc5e7621ba0e98c5c6728e3b2bdf802311c0a0953a05e60a7551cb0c7bed00a9.png
Requested by
Host: training.knowbe4.com
URL: https://training.knowbe4.com/pages/5c293115fa17?crid=311895240&crun=904955&dom=us-api.mimecast.com.kb4.io
Protocol
SPDY
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
52.20.167.196 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),
Reverse DNS
ec2-52-20-167-196.compute-1.amazonaws.com
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
fc5e7621ba0e98c5c6728e3b2bdf802311c0a0953a05e60a7551cb0c7bed00a9

Request headers

Referer
https://training.knowbe4.com/assets/sei-flag-5d737a9fc0b8eb1f5c0718dc7e6c9d994112556b34c564b7ababf85152ebe82d.css
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/60.0.3112.101 Safari/537.36

Response headers

date
Tue, 29 Aug 2017 16:46:35 GMT
last-modified
Mon, 28 Aug 2017 14:56:03 GMT
server
nginx/1.4.6 (Ubuntu)
etag
"59a42f03-c60"
content-type
image/png
status
200
cache-control
max-age=315360000, public
accept-ranges
bytes
content-length
3168
expires
Thu, 31 Dec 2037 23:55:55 GMT

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: Phishing Simulation (Internet)

0 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.

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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
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block