Unclassified // For public releaseWordle · Official security dossier

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Automatic security check · Public OSINT only

Company website

https://slack.com/

76%

Trusted — verify

No major public red flags in this pass, but confirm reviews, ownership, and TLS details yourself. Passive OSINT only · inventKeys=false.

  1. High concern
  2. Elevated risk
  3. Caution advised
  4. Trusted — verify
  5. Strong protections

slack.com security check

Public OSINT valuation for slack.com: grade B (76/100). Title signal “Slack | AI Work Platform & Productivity Tools”. 4 security headers present, 4 commonly expected headers missing. This is a defensive surface review — not a penetration test.

76
/100
Grade B
Trusted — verify

No major public red flags in this pass, but confirm reviews, ownership, and TLS details yourself.

Checked 2026-11-02T15:48:46Z · Method: automated passive checks · No attacks, no exploits

Company website · Services · Social

Company website

https://slack.com/

Services & products

Social & LinkedIn

  • LinkedIn https://www.linkedin.com/company/tiny-spec-inc/
  • Facebook https://facebook.com/slackhq
  • Instagram https://www.instagram.com/slackhq/
  • TikTok https://www.tiktok.com/@slackhq
  • X (Twitter) https://twitter.com/slackhq
  • YouTube https://www.youtube.com/channel/UCY3YECgeBcLCzIrFLP4gblw

Links are extracted from public crawl HTML only. We never invent profiles or product pages.

Research engines · Complete scan

This complete report delivers web-check-class passive modules to customers — DNS, TLS, headers, mail auth, archives, CT logs and more. Run a live check on the security-check tool for the full interactive dashboard.

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Add a free badge that links visitors to this official Wordle security report. You get referral traffic and a backlink; customers can verify the dossier.

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Trustpilot · Glassdoor

Trustpilot

—

Official Trustpilot signals only — never scraped. Shown when a public Business Unit profile exists (inventKeys=false).

Open Trustpilot for slack.com ↗

Glassdoor

—

No Glassdoor scrape. Search the official employer directory when no linked profile is present.

Search Glassdoor ↗

Hosting · IP · map

  • IP3.68.124.168
  • ASN—
  • Hosting—
  • Geo—
  • PTRec2-3-68-124-168.eu-central-1.compute.amazonaws.com
  • Nameservers—
  • MX—
  • SPF—
Map pending — IP geolocation not available (inventKeys=false).
  1. Query
    slack.comRequested hostname
  2. IP
    3.68.124.168Resolved A record
  3. ASN
    —Hosting org
  4. Trace
    ICMP traceroute off by policyPassive IP path only · inventKeys=false

Sources: DNS · MX/SPF/PTR · ipwho.is · OpenStreetMap · hosting-check · tool=vendor.hosting_check (passive only). Soft-fail if geo blocked · inventKeys=false.

Domain registration · business age

Domain age · domain-age-checker · vendor.domain_age

34 years, 21 days

Veteran (10+ years)

RegistrarMarkMonitor Inc.
Registered1992-10-21
Domain age34 years, 21 days
Age bandVeteran (10+ years)
Registry / location.com registry (RDAP)

Public RDAP / WHOIS only · domain-age-checker · tool=vendor.domain_age. Soft-fail when WHOIS is blocked — we never invent registrar or age.

Website worth · free TLDs · age

Est. midpoint$160,987,500
Range$6,075,000 – $315,900,000
Confidencehigh
Traffic (est.)3,375,000 – 11,250,000 / mo
RPM$18–$78
MonetizationHigh

Adapted from olivernashivy/site-worth · tool=vendor.site_worth · indicative only · inventKeys=false.

Same-name free extensions

  • slack.io · available
  • slack.co · available
  • slack.online · available
  • slack.site · available
  • slack.tech · available
  • slack.store · available

Checked 21 TLDs for “slack” · 8 registered · 0 unknown · DNS + RDAP only · tool=vendor.domain_scanner · inventKeys=false.

Highlights

Positive Highlights

  • SSL/TLS certificate validates (public handshake succeeded).
  • Final URL is served over HTTPS.
  • DNS resolves publicly (A/AAAA or equivalent).
  • TLS handshake OK (TLSv1.3).
  • HTTP Strict Transport Security is present.
  • DNS resolves publicly (A/AAAA).
  • security.txt found (coordinated disclosure signal).
  • RDAP domain record available (slack.com).

Negative Highlights

  • Content-Security-Policy not observed.
  • X-Content-Type-Options missing.
  • Set-Cookie present but Secure/HttpOnly incomplete on sampled header.
  • Security header missing: content-security-policy.
  • Security header missing: x-content-type-options.
  • Security header missing: permissions-policy.
  • Security header missing: cross-origin-resource-policy.

Derived from this scan’s findings, RDAP, TLS, and enrichment only · tools=vendor.site_worth,vendor.domain_age,vendor.hosting_check,vendor.domain_scanner · inventKeys=false.

Review Details

Company Evaluation

Registration data lists registrar “MarkMonitor Inc.”. Treat WHOIS fields as public OSINT only — not a legal ownership certificate. Domain age from RDAP is about 34 year(s) (12431 days).

Webshop Evaluation

Heuristic site-worth model (inventKeys=false) estimates midpoint value around $160,987,500 with monetization potential “High”. This is not an appraisal.

Technical Evaluation

Transport looks healthy: TLSv1.3 with certificate from Let's Encrypt. One or more browser security headers are missing on the final HTTPS response. That weakens clickjacking/XSS defenses even when the site is otherwise legitimate. Registrar on record: MarkMonitor Inc.. No automated “low-trust registrar” claim is made without a verified feed.

How we scored slack.com

Positive signals

  • TLS handshake OK (TLSv1.3).
  • HTTP Strict Transport Security is present.
  • DNS resolves publicly (A/AAAA).
  • security.txt found (coordinated disclosure signal).
  • robots.txt is publicly available.
  • RDAP domain record available (slack.com).

Risk signals

  • Content-Security-Policy not observed.
  • X-Content-Type-Options missing.
  • Set-Cookie present but Secure/HttpOnly incomplete on sampled header.

Findings

Technical details

DNS

resolved
A
3.68.124.168, 52.29.238.212, 18.159.197.225, 3.68.124.95, 3.68.170.153, 3.68.175.98
AAAA
—
PTR
ec2-3-68-124-168.eu-central-1.compute.amazonaws.com
error
—

TLS / certificate

ok
version
TLSv1.3
cipher
TLS_AES_256_GCM_SHA384
issuer
Let's Encrypt
notAfter
Jan 5 08:37:07 2027 GMT
SAN sample
*.slack.com, slack.com
error
—

HTTP & security headers

4 present
finalUrl
https://slack.com/
status
200
server
Apache
x-powered-by
—
present
cross-origin-opener-policy, referrer-policy, strict-transport-security, x-frame-options
missing
content-security-policy, x-content-type-options, permissions-policy, cross-origin-resource-policy
cookie Secure
True
cookie HttpOnly
False

Tech fingerprint (public)

passive
title
Slack | AI Work Platform & Productivity Tools
generator
—
tech
Google Analytics
script hosts
a.slack-edge.com, cdn.cookielaw.org, d34u8crftukxnk.cloudfront.net
description
Boost productivity and save time with Slack‌ — ‌the AI work platform for managing projects, automating workflows, and connecting teams securely. Start working smarter today.

RDAP / registration

rdap
domain
slack.com
registrar
MarkMonitor Inc.
created
1992-10-21T04:00:00Z
expires
2027-10-20T04:00:00Z
nameservers
ns-1493.awsdns-58.org, ns-166.awsdns-20.com, ns-1901.awsdns-45.co.uk, ns-606.awsdns-11.net
status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
error
—

Public well-known

passive
/.well-known/security.txt
HTTP 200 · found
/robots.txt
HTTP 200 · found
/security.txt
HTTP 200 · found
Analyzed 2026-11-02T15:48:46Z WORDLE passive OSINT (DNS/TLS/HTTP/RDAP/well-known) — no exploits More recent checks

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