No Security Risks Detected
This domain appears to be safe and secure
100%
Score
Disclaimer: This assessment is based on automated analysis of publicly available information. Results are for informational purposes only. For critical applications, consult security professionals.
Scan Information
Last checked:July 11, 2025 00:00:32
Target URL:https://simplex.chat/
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Page Information
Target URL
https://simplex.chat/
Page Title
SimpleX Chat: private and secure messenger without any user IDs (not even random)
Site FaviconStatus
Active
Host Information
Domain
simplex.chat
Server
GitHub.com
Country
United States
IP Address
185.199.109.153
ASN Information
54113
FASTLY
Technologies
Varnish
Caching
GitHub Pages
PaaS
HSTS
Security
Fastly
CDN
SSL Certificate
HTTPS Enabled
Secure
Certificate Issuer
R10
Valid From
2025-07-07 18:07:49
Valid Until
2025-10-05 18:07:48
Subject Name
simplex.chat
Performance Statistics
197
Total Requests
3
Domains
3
IP Addresses
4.82 MB
Transfer Size
Content Size7.47 MB
HTTP Headers
accept-ranges
bytes
access-control-allow-origin
*
age
359
cache-control
max-age=600
content-encoding
gzip
content-length
42175
content-type
text/html; charset=utf-8
date
Fri, 11 Jul 2025 00:00:38 GMT
etag
W/"686c20c1-3b525"
expires
Thu, 10 Jul 2025 12:56:24 GMT
last-modified
Mon, 07 Jul 2025 19:32:17 GMT
server
GitHub.com
strict-transport-security
max-age=31556952
vary
Accept-Encoding
via
1.1 varnish
x-cache
HIT
x-cache-hits
0
x-fastly-request-id
ea29a06b1018f3ae2335b5dc416165245c159780
x-github-request-id
305F:BE64E:104A30A:106A7AC:686FB620
x-proxy-cache
MISS
x-served-by
cache-mad22067-MAD
x-timer
S1752192039.777217,VS0,VE1
22 headers detected
Technology Stack Analysis
Varnish
Caching
Varnish is a reverse caching proxy.
GitHub Pages
PaaS
GitHub Pages is a static site hosting service.
HSTS
Security
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Fastly
CDN
Fastly is a cloud computing services provider. Fastly's cloud platform provides a content delivery network, Internet security services, load balancing, and video & streaming services.
External Links 60
open protocol
github.com
Target URL
https://github.com/simplex-chat/simplexmq/blob/stable/protocol/overview-tjr.md
SMP protocol
github.com
Target URL
https://github.com/simplex-chat/simplexmq/blob/stable/protocol/simplex-messaging.md
Chat bot example
github.com
Target URL
https://github.com/simplex-chat/simplex-chat/blob/stable/apps/simplex-bot-advanced/Main.hs
TypeScript SDK
github.com
Target URL
https://github.com/simplex-chat/simplex-chat/tree/stable/packages/simplex-chat-client/typescript
SimpleXMQ
github.com
Target URL
https://github.com/simplex-chat/simplexmq
Donate here to help us
github.com
Target URL
https://github.com/simplex-chat/simplex-chat#please-support-us-with-your-donations
Trail of Bits
www.trailofbits.com
Target URL
https://www.trailofbits.com/about/
Untitled Link
www.privacyguides.org
Target URL
https://www.privacyguides.org/en/real-time-communication/#simplex-chat
Untitled Link
www.whonix.org
Target URL
https://www.whonix.org/wiki/Chat#Recommendation
Untitled Link
www.heise.de
Target URL
https://www.heise.de/suche/?q=simplex+chat&sort_by=date&rm=search
Untitled Link
www.kuketz-blog.de
Target URL
https://www.kuketz-blog.de/simplex-eindruecke-vom-messenger-ohne-identifier/
Untitled Link
optoutpod.com
Target URL
https://optoutpod.com/episodes/s3e02-simplexchat/
Untitled Link
apps.apple.com
Target URL
https://apps.apple.com/us/app/simplex-chat/id1605771084
Untitled Link
play.google.com
Target URL
https://play.google.com/store/apps/details?id=chat.simplex.app
Untitled Link
testflight.apple.com
Target URL
https://testflight.apple.com/join/DWuT2LQu
Untitled Link
github.com
Target URL
https://github.com/simplex-chat/simplex-chat/releases/latest/download/simplex.apk
'poverty premium'
fairbydesign.com
Target URL
https://fairbydesign.com/povertypremium/
a reputable consulting company
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Facebook–Cambridge_Analytica_data_scandal
Mohamedou Ould Salahi
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Mohamedou_Ould_Slahi
even in democratic countries
www.dailymail.co.uk
Target URL
https://www.dailymail.co.uk/news/article-11282263/Moment-police-swoop-house-devout-catholic-mother-malicious-online-posts.html
pairwise anonymous addresses
csrc.nist.gov
Target URL
https://csrc.nist.gov/glossary/term/Pairwise_Pseudonymous_Identifier
Orbot app
guardianproject.info
Target URL
https://guardianproject.info/apps/org.torproject.android/
on iOS
apps.apple.com
Target URL
https://apps.apple.com/us/app/orbot/id1609461599?platform=iphone
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Peer-to-peer
DHT
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Distributed_hash_table
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Man-in-the-middle_attack
BitTorrent
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/BitTorrent
Sybil attack
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Sybil_attack
proof of work
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Proof_of_work
DRDoS attack
www.usenix.org
Target URL
https://www.usenix.org/conference/woot15/workshop-program/presentation/p2p-file-sharing-hell-exploiting-bittorrent
see here
github.com
Target URL
https://github.com/simplex-chat/simplex-chat/blob/stable/docs/SIMPLEX.md#comparison-with-p2p-messaging-protocols
Join the REDDIT community
www.reddit.com
Target URL
https://www.reddit.com/r/SimpleXChat/
Join us on GitHub
github.com
Target URL
https://github.com/simplex-chat
phone number portability
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Local_number_portability
Federation on Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Federation_(information_technology)
Digital credential on Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Digital_credential
consensus protocol
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Consensus_(computer_science)
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Blockchain
IPFS
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/InterPlanetary_File_System
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Merkle_tree
designed by Signal
signal.org
Target URL
https://signal.org/docs/specifications/doubleratchet
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Padding_(cryptography)
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Defence_in_depth
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/End-to-end_encryption
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Forward_secrecy
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Key-agreement_protocol
Tor
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Tor_(network)
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Onion_routing
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Overlay_network
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Non-repudiation
the definition
csrc.nist.gov
Target URL
https://csrc.nist.gov/glossary/term/pairwise_pseudonymous_identifier
Wikipedia
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Post-quantum_cryptography
this comparison
en.wikipedia.org
Target URL
https://en.wikipedia.org/wiki/Comparison_of_instant_messaging_protocols
SimpleX Chat protocol
github.com
Target URL
https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/simplex-chat.md
Terminal CLI
github.com
Target URL
https://github.com/simplex-chat/simplex-chat/blob/stable/docs/CLI.md
Untitled Link
snort.social
Target URL
https://snort.social/p/npub1exv22uulqnmlluszc4yk92jhs2e5ajcs6mu3t00a6avzjcalj9csm7d828
Untitled Link
mastodon.social
Target URL
https://mastodon.social/@simplex
Untitled Link
lemmy.ml
Target URL
https://lemmy.ml/c/simplex
Untitled Link
twitter.com
Target URL
https://twitter.com/simplexchat
Untitled Link
www.linkedin.com
Target URL
https://www.linkedin.com/company/simplex-chat/
Requested Domains 3
api.github.com
Unknown Type
No category information available
buttons.github.io
Unknown Type
No category information available
simplex.chat
Unknown Type
No category information available