nithishkrish.github.io Open in urlscan Pro
2606:50c0:8001::153  Malicious Activity! Public Scan

URL: https://nithishkrish.github.io/
Submission: On December 21 via api from BY — Scanned from DE

Summary

This website contacted 3 IPs in 2 countries across 3 domains to perform 14 HTTP transactions. The main IP is 2606:50c0:8001::153, located in United States and belongs to FASTLY, US. The main domain is nithishkrish.github.io.
TLS certificate: Issued by DigiCert Global G2 TLS RSA SHA256 202... on March 15th 2024. Valid for: a year.
This is the only time nithishkrish.github.io was scanned on urlscan.io!

urlscan.io Verdict: Potentially Malicious

Targeting these brands: Netflix (Online)

Domain & IP information

IP Address AS Autonomous System
3 2606:50c0:800... 54113 (FASTLY)
10 2a00:86c0:209... 40027 (NETFLIX-ASN)
1 2a00:86c0:205... 2906 (AS-SSI)
14 3
Apex Domain
Subdomains
Transfer
10 nflxext.com
assets.nflxext.com — Cisco Umbrella Rank: 5272
437 KB
3 github.io
nithishkrish.github.io
12 KB
1 nflxso.net
occ-0-2164-41.1.nflxso.net
249 KB
14 3
Domain Requested by
10 assets.nflxext.com nithishkrish.github.io
3 nithishkrish.github.io nithishkrish.github.io
1 occ-0-2164-41.1.nflxso.net nithishkrish.github.io
14 3

This site contains no links.

Subject Issuer Validity Valid
*.github.io
DigiCert Global G2 TLS RSA SHA256 2020 CA1
2024-03-15 -
2025-03-14
a year crt.sh
*.1.nflxso.net
DigiCert Secure Site ECC CA-1
2024-12-12 -
2025-01-14
a month crt.sh

This page contains 1 frames:

Primary Page: https://nithishkrish.github.io/
Frame ID: 2BE7C6B835E4F42053257A938BC872BA
Requests: 14 HTTP requests in this frame

Screenshot

Page Title

Netflix India-Watch Tv series&movies

Detected technologies

Overall confidence: 100%
Detected patterns
  • ^https?://[^/]+\.github\.io

Page Statistics

14
Requests

100 %
HTTPS

100 %
IPv6

3
Domains

3
Subdomains

3
IPs

2
Countries

698 kB
Transfer

977 kB
Size

0
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

14 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request /
nithishkrish.github.io/
13 KB
5 KB
Document
General
Full URL
https://nithishkrish.github.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:50c0:8001::153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
GitHub.com /
Resource Hash
83c7cf4e54f6c89dc9a6e2fe13899023b94dd571b0346014c6679940fc306465
Security Headers
Name Value
Strict-Transport-Security max-age=31556952

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Response headers

accept-ranges
bytes
access-control-allow-origin
*
age
0
cache-control
max-age=600
content-encoding
gzip
content-length
4338
content-type
text/html; charset=utf-8
date
Sat, 21 Dec 2024 04:15:09 GMT
etag
W/"64d0e4a3-359c"
expires
Sat, 21 Dec 2024 04:25:09 GMT
last-modified
Mon, 07 Aug 2023 12:33:39 GMT
permissions-policy
interest-cohort=()
server
GitHub.com
strict-transport-security
max-age=31556952
vary
Accept-Encoding
via
1.1 varnish
x-cache
MISS
x-cache-hits
0
x-fastly-request-id
25e744a29ba9d33883d60f4cd9d6f74672a4107c
x-github-request-id
40CC:1EE895:7B7A91:7D3F64:676640C9
x-proxy-cache
MISS
x-served-by
cache-mad22036-MAD
x-timer
S1734754509.108219,VS0,VE129
style.css
nithishkrish.github.io/
9 KB
2 KB
Stylesheet
General
Full URL
https://nithishkrish.github.io/style.css
Requested by
Host: nithishkrish.github.io
URL: https://nithishkrish.github.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:50c0:8001::153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
GitHub.com /
Resource Hash
c43aa0045b257848982f93d037e866b38ab5336736c5a148b370294564e3eac5
Security Headers
Name Value
Strict-Transport-Security max-age=31556952

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://nithishkrish.github.io/

Response headers

x-fastly-request-id
d39c0fe40afff6f7f5654fe2eb1705d5a36f4a0f
content-encoding
gzip
etag
W/"64d0e4a3-2213"
age
0
x-github-request-id
9FDD:1B8CC2:7B4C9F:7D1190:676640C9
expires
Sat, 21 Dec 2024 04:25:09 GMT
x-proxy-cache
MISS
x-cache
MISS
date
Sat, 21 Dec 2024 04:15:09 GMT
content-type
text/css; charset=utf-8
last-modified
Mon, 07 Aug 2023 12:33:39 GMT
x-served-by
cache-mad22036-MAD
x-cache-hits
0
vary
Accept-Encoding
strict-transport-security
max-age=31556952
cache-control
max-age=600
x-timer
S1734754509.275791,VS0,VE136
via
1.1 varnish
permissions-policy
interest-cohort=()
accept-ranges
bytes
access-control-allow-origin
*
content-length
2047
server
GitHub.com
IN-en-20230731-popsignuptwoweeks-perspective_alpha_website_small.jpg
assets.nflxext.com/ffe/siteui/vlv3/b85863b0-0609-4dba-8fe8-d0370b25b9ee/fdf508c8-97d0-42fd-a6f9-9bef6bf96934/
107 KB
107 KB
Image
General
Full URL
https://assets.nflxext.com/ffe/siteui/vlv3/b85863b0-0609-4dba-8fe8-d0370b25b9ee/fdf508c8-97d0-42fd-a6f9-9bef6bf96934/IN-en-20230731-popsignuptwoweeks-perspective_alpha_website_small.jpg
Requested by
Host: nithishkrish.github.io
URL: https://nithishkrish.github.io/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
2a00:86c0:2090::1 , United States, ASN40027 (NETFLIX-ASN, US),
Reverse DNS
Software
nginx /
Resource Hash
a608e14a458b665d62c9b260460b9d41eb3f5a07f33710d2a10b4ed28fa6f405

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://nithishkrish.github.io/

Response headers

Content-MD5
sRMtSegungiGPARDj3Jppg==
Cache-Control
max-age=604801
Connection
keep-alive
Expires
Sat, 28 Dec 2024 04:15:10 GMT
Accept-Ranges
bytes
Content-Length
109635
Date
Sat, 21 Dec 2024 04:15:09 GMT
Content-Type
image/jpeg
Last-Modified
Wed, 02 Aug 2023 13:47:01 GMT
Server
nginx
tv.png
assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/
11 KB
11 KB
Image
General
Full URL
https://assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/tv.png
Requested by
Host: nithishkrish.github.io
URL: https://nithishkrish.github.io/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
2a00:86c0:2090::1 , United States, ASN40027 (NETFLIX-ASN, US),
Reverse DNS
Software
nginx /
Resource Hash
b68ea2c7bea397aa11fadb189ce7d83862baebaf03ece643eb5aa9fb5f755056

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://nithishkrish.github.io/

Response headers

Content-MD5
d5lKZzJ7qVff2IDjOpHwQQ==
Cache-Control
max-age=604801
Connection
keep-alive
Expires
Sat, 28 Dec 2024 04:15:10 GMT
Accept-Ranges
bytes
Content-Length
11418
Date
Sat, 21 Dec 2024 04:15:09 GMT
Content-Type
image/png
Last-Modified
Wed, 14 Nov 2018 18:20:41 GMT
Server
nginx
mobile-0819.jpg
assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/
48 KB
49 KB
Image
General
Full URL
https://assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/mobile-0819.jpg
Requested by
Host: nithishkrish.github.io
URL: https://nithishkrish.github.io/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
2a00:86c0:2090::1 , United States, ASN40027 (NETFLIX-ASN, US),
Reverse DNS
Software
nginx /
Resource Hash
492fdebd363e40cbba153a244bcfe2a7f5f7cf20aff0805fe45d5c7e2180b875

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://nithishkrish.github.io/

Response headers

Content-MD5
pIMz1DwZYS7WGYf6Xb/zxQ==
Cache-Control
max-age=604801
Connection
keep-alive
Expires
Sat, 28 Dec 2024 04:15:10 GMT
Accept-Ranges
bytes
Content-Length
49614
Date
Sat, 21 Dec 2024 04:15:09 GMT
Content-Type
image/jpeg
Last-Modified
Wed, 14 Aug 2019 17:59:05 GMT
Server
nginx
boxshot.png
assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/
20 KB
20 KB
Image
General
Full URL
https://assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/boxshot.png
Requested by
Host: nithishkrish.github.io
URL: https://nithishkrish.github.io/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
2a00:86c0:2090::1 , United States, ASN40027 (NETFLIX-ASN, US),
Reverse DNS
Software
nginx /
Resource Hash
e1fa26cc34fda574edc01d09e374d6f10735a3fa621bdde87c104ee15453d4b6

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://nithishkrish.github.io/

Response headers

Content-MD5
WH4EDyAll5IJSQHKlzlmng==
Cache-Control
max-age=604801
Connection
keep-alive
Expires
Sat, 28 Dec 2024 04:15:10 GMT
Accept-Ranges
bytes
Content-Length
20506
Date
Sat, 21 Dec 2024 04:15:09 GMT
Content-Type
image/png
Last-Modified
Wed, 14 Nov 2018 18:48:14 GMT
Server
nginx
download-icon.gif
assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/
22 KB
22 KB
Image
General
Full URL
https://assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/download-icon.gif
Requested by
Host: nithishkrish.github.io
URL: https://nithishkrish.github.io/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
2a00:86c0:2090::1 , United States, ASN40027 (NETFLIX-ASN, US),
Reverse DNS
Software
nginx /
Resource Hash
4f99e4c2ed1c2b7de72f47102c64d601567f8efaad5944a08c86786cad4050e6

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://nithishkrish.github.io/

Response headers

Content-MD5
3Ty3jbeMPgoTybd+4Z3u5g==
Cache-Control
max-age=604801
Connection
keep-alive
Expires
Sat, 28 Dec 2024 04:15:10 GMT
Accept-Ranges
bytes
Content-Length
22171
Date
Sat, 21 Dec 2024 04:15:09 GMT
Content-Type
image/gif
Last-Modified
Mon, 12 Nov 2018 22:40:57 GMT
Server
nginx
device-pile-in.png
assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/
148 KB
148 KB
Image
General
Full URL
https://assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/device-pile-in.png
Requested by
Host: nithishkrish.github.io
URL: https://nithishkrish.github.io/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
2a00:86c0:2090::1 , United States, ASN40027 (NETFLIX-ASN, US),
Reverse DNS
Software
nginx /
Resource Hash
4a3bfdf68de04166878c6bfa4c5b0f57a100cad45ab80939433e8f7aeef4b7a4

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://nithishkrish.github.io/

Response headers

Content-MD5
GGpwZJPdUV4w+K1oLQaFeA==
Cache-Control
max-age=604801
Connection
keep-alive
Expires
Sat, 28 Dec 2024 04:15:10 GMT
Accept-Ranges
bytes
Content-Length
151687
Date
Sat, 21 Dec 2024 04:15:09 GMT
Content-Type
image/png
Last-Modified
Wed, 23 Jan 2019 00:35:07 GMT
Server
nginx
AAAABVr8nYuAg0xDpXDv0VI9HUoH7r2aGp4TKRCsKNQrMwxzTtr-NlwOHeS8bCI2oeZddmu3nMYr3j9MjYhHyjBASb1FaOGYZNYvPBCL.png
occ-0-2164-41.1.nflxso.net/dnm/api/v6/19OhWN2dO19C9txTON9tvTFtefw/
249 KB
249 KB
Image
General
Full URL
https://occ-0-2164-41.1.nflxso.net/dnm/api/v6/19OhWN2dO19C9txTON9tvTFtefw/AAAABVr8nYuAg0xDpXDv0VI9HUoH7r2aGp4TKRCsKNQrMwxzTtr-NlwOHeS8bCI2oeZddmu3nMYr3j9MjYhHyjBASb1FaOGYZNYvPBCL.png?r=54d
Requested by
Host: nithishkrish.github.io
URL: https://nithishkrish.github.io/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
2a00:86c0:2050:2050::150 Mumbai, India, ASN2906 (AS-SSI, US),
Reverse DNS
Software
nginx /
Resource Hash
1e5a6122c8e39862aa1c92eae0e83e92458232d930620e9ca0c68e9be425aa67

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://nithishkrish.github.io/

Response headers

Cache-Control
max-age=31104000, public, s-maxage=604800
Timing-Allow-Origin
*
Accept-CH
Device-Memory, Downlink, DPR, ECT, RTT, Save-Data, Viewport-Width, Width
ETag
"2995e70023477ef72300f24e45aba1d5"
Connection
keep-alive
Accept-Ranges
bytes
Access-Control-Allow-Origin
*
Content-Length
254586
Date
Sat, 21 Dec 2024 04:15:10 GMT
Content-Type
image/png
Last-Modified
Thu, 01 Jun 2023 21:27:38 GMT
Server
nginx
video-tv-in-0819.m4v
assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/
34 KB
0
Media
General
Full URL
https://assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/video-tv-in-0819.m4v
Requested by
Host: nithishkrish.github.io
URL: https://nithishkrish.github.io/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
2a00:86c0:2090::1 , United States, ASN40027 (NETFLIX-ASN, US),
Reverse DNS
Software
nginx /
Resource Hash

Request headers

Referer
https://nithishkrish.github.io/
Accept-Encoding
identity;q=1, *;q=0
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Range
bytes=0-

Response headers

Content-MD5
pYX28yVkH4IOMnLz7ACG7Q==
Cache-Control
max-age=604801
Connection
keep-alive
Content-Range
bytes 0-267711/267712
Expires
Sat, 28 Dec 2024 04:15:10 GMT
Content-Length
267712
Date
Sat, 21 Dec 2024 04:15:09 GMT
Content-Type
video/x-m4v
Last-Modified
Mon, 12 Aug 2019 20:49:12 GMT
Server
nginx
video-devices-in.m4v
assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/
73 KB
73 KB
Media
General
Full URL
https://assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/video-devices-in.m4v
Requested by
Host: nithishkrish.github.io
URL: https://nithishkrish.github.io/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
2a00:86c0:2090::1 , United States, ASN40027 (NETFLIX-ASN, US),
Reverse DNS
Software
nginx /
Resource Hash
92259a1c73354bce2540a94397feed47d41bde07f23359decea3187799e5c19d

Request headers

Referer
https://nithishkrish.github.io/
Accept-Encoding
identity;q=1, *;q=0
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Range
bytes=0-

Response headers

Content-MD5
c+JdHa496slk30MRHATJcw==
Cache-Control
max-age=604801
Connection
keep-alive
Content-Range
bytes 0-74302/74303
Expires
Sat, 28 Dec 2024 04:15:10 GMT
Content-Length
74303
Date
Sat, 21 Dec 2024 04:15:09 GMT
Content-Type
video/x-m4v
Last-Modified
Wed, 23 Jan 2019 00:35:07 GMT
Server
nginx
video-tv-in-0819.m4v
assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/
5 KB
6 KB
Media
General
Full URL
https://assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/video-tv-in-0819.m4v
Requested by
Host: nithishkrish.github.io
URL: https://nithishkrish.github.io/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
2a00:86c0:2090::1 , United States, ASN40027 (NETFLIX-ASN, US),
Reverse DNS
Software
nginx /
Resource Hash
87c71d9108c7ead2c27f80bc5e874f9292f8aa8b657fa9bee6835bddf758cdb8

Request headers

Referer
https://nithishkrish.github.io/
Accept-Encoding
identity;q=1, *;q=0
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Range
bytes=262144-

Response headers

Content-MD5
pYX28yVkH4IOMnLz7ACG7Q==
Cache-Control
max-age=604801
Content-Range
bytes 262144-267711/267712
Expires
Sat, 28 Dec 2024 04:15:10 GMT
Content-Length
5568
Date
Sat, 21 Dec 2024 04:15:09 GMT
Last-Modified
Mon, 12 Aug 2019 20:49:12 GMT
Content-Type
video/x-m4v
Server
nginx
video-tv-in-0819.m4v
assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/
229 KB
0
Media
General
Full URL
https://assets.nflxext.com/ffe/siteui/acquisition/ourStory/fuji/desktop/video-tv-in-0819.m4v
Requested by
Host: nithishkrish.github.io
URL: https://nithishkrish.github.io/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
2a00:86c0:2090::1 , United States, ASN40027 (NETFLIX-ASN, US),
Reverse DNS
Software
nginx /
Resource Hash

Request headers

Referer
https://nithishkrish.github.io/
Accept-Encoding
identity;q=1, *;q=0
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Range
bytes=32768-

Response headers

Content-MD5
pYX28yVkH4IOMnLz7ACG7Q==
Cache-Control
max-age=604801
Content-Range
bytes 32768-267711/267712
Expires
Sat, 28 Dec 2024 04:15:10 GMT
Content-Length
234944
Date
Sat, 21 Dec 2024 04:15:09 GMT
Last-Modified
Mon, 12 Aug 2019 20:49:12 GMT
Content-Type
video/x-m4v
Server
nginx
netflix-logo.png
nithishkrish.github.io/images/
9 KB
5 KB
Other
General
Full URL
https://nithishkrish.github.io/images/netflix-logo.png
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:50c0:8001::153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
GitHub.com /
Resource Hash
b620507312c5e97566a3c6cfaf99144fefc18a0da7d941401dfa0f5f58fb0368
Security Headers
Name Value
Content-Security-Policy default-src 'none'; style-src 'unsafe-inline'; img-src data:; connect-src 'self'
Strict-Transport-Security max-age=31556952

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://nithishkrish.github.io/

Response headers

x-fastly-request-id
35cfad65b11b70d96043f259b7d22e32b8e18fcc
content-encoding
gzip
etag
W/"64d39a40-24a3"
age
0
x-github-request-id
B231:1BF21B:7A758B:7C3A31:676640CF
x-proxy-cache
MISS
x-cache
MISS
date
Sat, 21 Dec 2024 04:15:11 GMT
content-type
text/html; charset=utf-8
x-served-by
cache-mad22036-MAD
x-cache-hits
0
vary
Accept-Encoding
strict-transport-security
max-age=31556952
content-security-policy
default-src 'none'; style-src 'unsafe-inline'; img-src data:; connect-src 'self'
x-timer
S1734754512.668731,VS0,VE124
via
1.1 varnish
permissions-policy
interest-cohort=()
accept-ranges
bytes
access-control-allow-origin
*
content-length
5254
server
GitHub.com

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: Netflix (Online)

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.

0 Cookies

1 Console Messages

Source Level URL
Text
network error URL: https://nithishkrish.github.io/images/netflix-logo.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
Strict-Transport-Security max-age=31556952