URL: https://exam.bankingbro.in/
Submission: On February 20 via automatic, source certstream-suspicious — Scanned from DE

Summary

This website contacted 6 IPs in 3 countries across 5 domains to perform 11 HTTP transactions. The main IP is 2a02:4780:9:606:0:6fc:3f2f:5, located in Vilnius, Lithuania and belongs to AS-HOSTINGER, CY. The main domain is exam.bankingbro.in.
TLS certificate: Issued by R3 on February 20th 2024. Valid for: 3 months.
This is the only time exam.bankingbro.in was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
6 2a02:4780:9:6... 47583 (AS-HOSTINGER)
1 2a00:1450:400... 15169 (GOOGLE)
1 3.229.200.44 14618 (AMAZON-AES)
2 2606:4700:20:... 13335 (CLOUDFLAR...)
1 2a00:1450:400... 15169 (GOOGLE)
11 6
Apex Domain
Subdomains
Transfer
6 bankingbro.in
exam.bankingbro.in
41 KB
2 ui-avatars.com
ui-avatars.com — Cisco Umbrella Rank: 44864
2 KB
1 gstatic.com
fonts.gstatic.com
46 KB
1 placeholder.com
via.placeholder.com — Cisco Umbrella Rank: 36566
559 B
1 googleapis.com
fonts.googleapis.com — Cisco Umbrella Rank: 48
1 KB
11 5
Domain Requested by
6 exam.bankingbro.in exam.bankingbro.in
2 ui-avatars.com exam.bankingbro.in
1 fonts.gstatic.com fonts.googleapis.com
1 via.placeholder.com exam.bankingbro.in
1 fonts.googleapis.com exam.bankingbro.in
11 5

This site contains no links.

Subject Issuer Validity Valid
exam.bankingbro.in
R3
2024-02-20 -
2024-05-20
3 months crt.sh
upload.video.google.com
GTS CA 1C3
2024-01-29 -
2024-04-22
3 months crt.sh
placeholder.com
Amazon RSA 2048 M02
2023-12-26 -
2025-01-24
a year crt.sh
sni.cloudflaressl.com
Cloudflare Inc ECC CA-3
2023-04-11 -
2024-04-10
a year crt.sh
*.gstatic.com
GTS CA 1C3
2024-01-29 -
2024-04-22
3 months crt.sh

This page contains 1 frames:

Primary Page: https://exam.bankingbro.in/
Frame ID: 95B9947A81D478847DB96780A625CA66
Requests: 12 HTTP requests in this frame

Screenshot

Page Title

Everything You Need For Your Exam Preparation. - Banking Bro TestFacebookTwitterYouTubeInstagramLinkedInGitHub

Detected technologies

Overall confidence: 100%
Detected patterns
  • <[^>]+[^\w-]x-data[^\w-][^<]+
  • /alpine(?:\.min)?\.js

Overall confidence: 100%
Detected patterns
  • <link[^>]* href=[^>]+fonts\.(?:googleapis|google)\.com

Page Statistics

11
Requests

100 %
HTTPS

80 %
IPv6

5
Domains

5
Subdomains

6
IPs

3
Countries

91 kB
Transfer

195 kB
Size

2
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

11 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request /
exam.bankingbro.in/
37 KB
11 KB
Document
General
Full URL
https://exam.bankingbro.in/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a02:4780:9:606:0:6fc:3f2f:5 Vilnius, Lithuania, ASN47583 (AS-HOSTINGER, CY),
Reverse DNS
Software
LiteSpeed / PHP/8.0.30
Resource Hash
1eba09f558a1a49425385dc30e7df5956d0563cb49ef3b70fd76e07239fb4a1e
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

alt-svc
h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, h3-Q050=":443"; ma=2592000, h3-Q046=":443"; ma=2592000, h3-Q043=":443"; ma=2592000, quic=":443"; ma=2592000; v="43,46"
cache-control
no-cache, private
content-encoding
br
content-security-policy
upgrade-insecure-requests
content-type
text/html; charset=UTF-8
date
Tue, 20 Feb 2024 10:46:27 GMT
platform
hostinger
server
LiteSpeed
vary
Accept-Encoding
x-powered-by
PHP/8.0.30
css2
fonts.googleapis.com/
7 KB
1 KB
Stylesheet
General
Full URL
https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap
Requested by
Host: exam.bankingbro.in
URL: https://exam.bankingbro.in/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:809::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
c20e697ee901e9df8cc7b5bd2b0fc31fa016906fca6ee02bc0e2144372b4e631
Security Headers
Name Value
Strict-Transport-Security max-age=31536000
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://exam.bankingbro.in/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

strict-transport-security
max-age=31536000
date
Tue, 20 Feb 2024 10:46:27 GMT
content-encoding
gzip
x-content-type-options
nosniff
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
x-xss-protection
0
last-modified
Tue, 20 Feb 2024 10:02:22 GMT
server
ESF
cross-origin-opener-policy
same-origin-allow-popups
x-frame-options
SAMEORIGIN
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
private, max-age=86400, stale-while-revalidate=604800
timing-allow-origin
*
link
<https://fonts.gstatic.com>; rel=preconnect; crossorigin
expires
Tue, 20 Feb 2024 10:46:27 GMT
store.css
exam.bankingbro.in/css/
62 KB
10 KB
Stylesheet
General
Full URL
https://exam.bankingbro.in/css/store.css
Requested by
Host: exam.bankingbro.in
URL: https://exam.bankingbro.in/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a02:4780:9:606:0:6fc:3f2f:5 Vilnius, Lithuania, ASN47583 (AS-HOSTINGER, CY),
Reverse DNS
Software
LiteSpeed /
Resource Hash
a40e15fd6970d6b59eeab9c96250c1df9efc4c2e5eb68003b471dcbae698fac8
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://exam.bankingbro.in/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date
Tue, 20 Feb 2024 10:46:27 GMT
content-encoding
br
content-security-policy
upgrade-insecure-requests
last-modified
Tue, 20 Feb 2024 10:37:30 GMT
server
LiteSpeed
etag
"f798-65d480ea-10e70837c4eadddb;br"
vary
Accept-Encoding
content-type
text/css
cache-control
public, max-age=604800
accept-ranges
bytes
platform
hostinger
content-length
10440
expires
Tue, 27 Feb 2024 10:46:27 GMT
alpine.min.js
exam.bankingbro.in/vendor/alpinejs/
35 KB
13 KB
Script
General
Full URL
https://exam.bankingbro.in/vendor/alpinejs/alpine.min.js
Requested by
Host: exam.bankingbro.in
URL: https://exam.bankingbro.in/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a02:4780:9:606:0:6fc:3f2f:5 Vilnius, Lithuania, ASN47583 (AS-HOSTINGER, CY),
Reverse DNS
Software
LiteSpeed /
Resource Hash
5964bf97193d39fbae367baff5510e153a4125a366cfff444cfe16bb7fe90be2
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://exam.bankingbro.in/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date
Tue, 20 Feb 2024 10:46:27 GMT
content-encoding
br
content-security-policy
upgrade-insecure-requests
last-modified
Tue, 20 Feb 2024 10:37:31 GMT
server
LiteSpeed
etag
"8b8d-65d480eb-da9a4cae2125b67c;br"
vary
Accept-Encoding
content-type
application/x-javascript
cache-control
public, max-age=604800
accept-ranges
bytes
platform
hostinger
content-length
12955
expires
Tue, 27 Feb 2024 10:46:27 GMT
logo.png
exam.bankingbro.in/storage/site/
381 B
473 B
Image
General
Full URL
https://exam.bankingbro.in/storage/site/logo.png
Requested by
Host: exam.bankingbro.in
URL: https://exam.bankingbro.in/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a02:4780:9:606:0:6fc:3f2f:5 Vilnius, Lithuania, ASN47583 (AS-HOSTINGER, CY),
Reverse DNS
Software
LiteSpeed /
Resource Hash
d2f5bcad065965943dc4d5d6e8e3423ced9769fd716ebea584d11336ee5d2a5b
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://exam.bankingbro.in/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date
Tue, 20 Feb 2024 10:46:27 GMT
content-security-policy
upgrade-insecure-requests
last-modified
Tue, 20 Feb 2024 10:37:31 GMT
server
LiteSpeed
etag
"17d-65d480eb-5ec22a26c4a944cd;;;"
content-type
image/png
cache-control
public, max-age=604800
accept-ranges
bytes
platform
hostinger
content-length
381
expires
Tue, 27 Feb 2024 10:46:27 GMT
hero_image_bg.png
exam.bankingbro.in/storage/site/
6 KB
6 KB
Image
General
Full URL
https://exam.bankingbro.in/storage/site/hero_image_bg.png
Requested by
Host: exam.bankingbro.in
URL: https://exam.bankingbro.in/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a02:4780:9:606:0:6fc:3f2f:5 Vilnius, Lithuania, ASN47583 (AS-HOSTINGER, CY),
Reverse DNS
Software
LiteSpeed / PHP/8.0.30
Resource Hash
8437bd0ef46a19c9a7c294c53e0429b40e76ebbd5fe9fd73a9025752495ddb1c
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://exam.bankingbro.in/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date
Tue, 20 Feb 2024 10:46:28 GMT
content-encoding
br
content-security-policy
upgrade-insecure-requests
server
LiteSpeed
x-powered-by
PHP/8.0.30
vary
Accept-Encoding
content-type
text/html; charset=UTF-8
cache-control
no-cache, private
platform
hostinger
content-length
2393
48x48
via.placeholder.com/
433 B
559 B
Image
General
Full URL
https://via.placeholder.com/48x48
Requested by
Host: exam.bankingbro.in
URL: https://exam.bankingbro.in/
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
3.229.200.44 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS
ec2-3-229-200-44.compute-1.amazonaws.com
Software
Werkzeug/2.2.2 Python/3.9.16 /
Resource Hash
fdba45b4f88444b7c10e2ba80e988e7407dbf016de447369fed43d4f06407fbb

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://exam.bankingbro.in/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date
Tue, 20 Feb 2024 10:46:28 GMT
cache-control
public, max-age=31557600
server
Werkzeug/2.2.2 Python/3.9.16
content-length
433
content-type
image/png
/
ui-avatars.com/api/
560 B
999 B
Image
General
Full URL
https://ui-avatars.com/api/?name=Sarah+Meyer
Requested by
Host: exam.bankingbro.in
URL: https://exam.bankingbro.in/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:20::ac43:4b78 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
6e2a258750e98546e768697116e6e833b5bbb9448fe8062bf860055724ca18bf

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://exam.bankingbro.in/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date
Tue, 20 Feb 2024 10:46:28 GMT
content-encoding
br
cf-cache-status
HIT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
pragma
public
last-modified
Mon, 29 Jan 2024 14:39:40 GMT
server
cloudflare
access-control-max-age
31536000, 31536000
vary
Accept-Encoding
access-control-allow-methods
GET, OPTIONS, GET, OPTIONS
access-control-allow-origin
*, *
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=kjGADe5rZUJWtonBQ%2Bbbz1N2ZsiNLMlZEGj2CRseCVzYyqIJSNbkESJy%2BTScKYqnwvfBwF9u3ymPQVJHqkW9zXu383UgdbZ9R%2BRF8CsHAMNwz8U8HAsq5D5oSgTwoOD%2BOK3V3zAdAVeJ%2Fs3x"}],"group":"cf-nel","max_age":604800}
content-type
image/svg+xml
cache-control
public, max-age=31536000
access-control-allow-credentials
true, true
cf-ray
85862a78ddce9101-FRA
access-control-allow-headers
Content-Type, Accept, X-Requested-With, remember-me, cache-control, Content-Type, Accept, X-Requested-With, remember-me, cache-control
expires
Tue, 28 Jan 2025 14:39:40 GMT
/
ui-avatars.com/api/
560 B
669 B
Image
General
Full URL
https://ui-avatars.com/api/?name=Vijay+Shah
Requested by
Host: exam.bankingbro.in
URL: https://exam.bankingbro.in/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:20::ac43:4b78 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
1b68c05089b98d7f34633a95b5958c445b18cff4db94fb977802548f593dc6c0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://exam.bankingbro.in/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date
Tue, 20 Feb 2024 10:46:28 GMT
content-encoding
br
cf-cache-status
HIT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
pragma
public
last-modified
Sun, 11 Feb 2024 13:27:45 GMT
server
cloudflare
access-control-max-age
31536000, 31536000
vary
Accept-Encoding
access-control-allow-methods
GET, OPTIONS, GET, OPTIONS
access-control-allow-origin
*, *
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=favawIpj3gZdwX4TkYZOojVKAtVHvrrgUgBMvr5Wkhaz8L6cDmpHhEEAHDWXTa3GENNzTAuJre2KZIQUw9s2R%2FZR05XCEQkTDsKvr%2FMbZBtCxSF%2B9QZfN7RncpqWeKNoHuAyhWb6Y%2F3fNec6"}],"group":"cf-nel","max_age":604800}
content-type
image/svg+xml
cache-control
public, max-age=31536000
access-control-allow-credentials
true, true
cf-ray
85862a78ddd29101-FRA
access-control-allow-headers
Content-Type, Accept, X-Requested-With, remember-me, cache-control, Content-Type, Accept, X-Requested-With, remember-me, cache-control
expires
Mon, 10 Feb 2025 13:27:45 GMT
logo_white.png
exam.bankingbro.in/storage/site/
381 B
438 B
Image
General
Full URL
https://exam.bankingbro.in/storage/site/logo_white.png
Requested by
Host: exam.bankingbro.in
URL: https://exam.bankingbro.in/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a02:4780:9:606:0:6fc:3f2f:5 Vilnius, Lithuania, ASN47583 (AS-HOSTINGER, CY),
Reverse DNS
Software
LiteSpeed /
Resource Hash
d2f5bcad065965943dc4d5d6e8e3423ced9769fd716ebea584d11336ee5d2a5b
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://exam.bankingbro.in/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date
Tue, 20 Feb 2024 10:46:27 GMT
content-security-policy
upgrade-insecure-requests
last-modified
Tue, 20 Feb 2024 10:37:31 GMT
server
LiteSpeed
etag
"17d-65d480eb-8814b0485c00a614;;;"
content-type
image/png
cache-control
public, max-age=604800
accept-ranges
bytes
platform
hostinger
content-length
381
expires
Tue, 27 Feb 2024 10:46:27 GMT
truncated
/
190 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
b0d967a37c8c43df169a76e660445a7d1fd0e32552e3a6c19451dd5d134f6dc0

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

Content-Type
image/svg+xml;charset=utf-8
UcC73FwrK3iLTeHuS_fvQtMwCp50KnMa1ZL7.woff2
fonts.gstatic.com/s/inter/v13/
46 KB
46 KB
Font
General
Full URL
https://fonts.gstatic.com/s/inter/v13/UcC73FwrK3iLTeHuS_fvQtMwCp50KnMa1ZL7.woff2
Requested by
Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:831::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
88df0b5a7bc397dbc13a26bb8b3742cc62cd1c9b0dded57da7832416d6f52f42
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

Referer
https://fonts.googleapis.com/
Origin
https://exam.bankingbro.in
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 15:14:07 GMT
x-content-type-options
nosniff
age
588741
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
46704
x-xss-protection
0
last-modified
Wed, 13 Sep 2023 23:49:07 GMT
server
sffe
cross-origin-opener-policy
same-origin; report-to="apps-themes"
report-to
{"group":"apps-themes","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/apps-themes"}]}
content-type
font/woff2
access-control-allow-origin
*
cache-control
public, max-age=31536000
accept-ranges
bytes
timing-allow-origin
*
expires
Wed, 12 Feb 2025 15:14:07 GMT

Verdicts & Comments Add Verdict or Comment

1 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.

object| Alpine

2 Cookies

Domain/Path Name / Value
exam.bankingbro.in/ Name: XSRF-TOKEN
Value: eyJpdiI6InVaUXN2bkhMRFBxZHZZU0p0cTVJS0E9PSIsInZhbHVlIjoiNUIyblY4TEtRbUhGVHcveUErcHpDL3NvbWpFblR6V3pFRVorOWN0N045eFZTa3VFUnJyeVRjakl5VHEzeGtxTWJMekNYUFIxYnB0Ym9sZmxhOUdCRkpNSlJNbFJtaWVXSHRGRjVlbEtnaE5OQzFmZ2hCMmZGanN1NXBTMzNXNWciLCJtYWMiOiI2YWMzMTIwYjU0NmZhYWMzNDQ1MGU2NWMyN2E1OWViMjk0ZGJlOTg5YTBjMWM0YjFjZjhjN2NhMDBlNTMwNzdjIn0%3D
exam.bankingbro.in/ Name: banking_bro_test_session
Value: eyJpdiI6IitreVpESWM4Q0hsNC9IN1RueHJQUlE9PSIsInZhbHVlIjoiWU5Ia0lmSFhyckNYaDVmNFBNZ3p6alhUZjFhUzZZT1J2L2dkWW11aUpsNTU4dmpCakZxaVV6Q3BNbEE5eXo3K3NDVzNFWkRIUWdZMkhEN0lsbE9iNVRGOFVJSVUwam5mYW1HbGtic2dYbk95WnlRamczN3V0cFovSHAxUzMyTEIiLCJtYWMiOiIzZDUxNzc4MzBhMDEzMGVlZjZkZWE2MGU4YzJmYzIxMTAzOGQ5M2ZkOTVmNGYwZGQyMTk1ZTM1ODZhMWQ1ZjM4In0%3D

1 Console Messages

Source Level URL
Text
network error URL: https://exam.bankingbro.in/storage/site/hero_image_bg.png
Message:
Failed to load resource: the server responded with a status of 404 ()

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
Content-Security-Policy upgrade-insecure-requests