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shadowserver.org

https://shadowserver.org· First analyzed 02 May 2026· Updated 02 May 2026
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shadowserver.org
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Mobile screenshot of shadowserver.org
Mobile

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Hosting Provider

IP Address

103.41.71.79

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Cambridge, United States

ASN

AS213120

Organization

Akamai Technologies, Inc

Server

BunnyCDN-IL1-1232

CDN

CDN

Nameservers

ns1.shadowserver.org.ns3.shadowserver.org.ns2.shadowserver.org.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
621 ms10%
Speed Index
807 ms10%
Largest Contentful Paint
25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
616 KB
59 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9.4
cms
Shadowserverv1.0.1Custom
by Madison Ave. Collective

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

7 Technologies Detected

SEO Analysis

C62/100
17
8
1
Meta Tags9/15
Content11/12
Headings3/8
Technical19/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
S
shadowserver.orgshadowserver.org

The Shadowserver Foundation

The Shadowserver Foundation is a nonprofit security organization working altruistically behind the scenes to make the Internet more secure for everyone.

Title Length27 chars

Recommended: 50-60 chars (~168px / 580px)

Description Length152 chars

Recommended: 120-160 chars

Issues (1)

  • Missing H1 tag — every page should have exactly one H1

Crawlability

Sitemap

Type: index

5 URLs

5 sub-sitemaps

robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

6/100
Poor
2 13 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

D41/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
11/25

AI Bot Access

14/14 accessible
AI Search
OAI-SearchBot
PerplexityBot
Claude-SearchBot
Gemini-Deep-Research
DuckAssistBot
Training
GPTBot
ClaudeBot
Google-Extended
Meta-ExternalAgent
Bytespiderinfo
Amazonbot
Applebot-Extended
CCBotinfo
Fetch
ChatGPT-User

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
navheader/footer
Text ratio:10%
Words:665
Token eff.:Optimal
Sections/1K:6
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary15w
Descriptive Headingsavg 3w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
AI readiness recommendation preview...

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
B
73/100
10
Passed
4
Critical
0
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
13/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
15/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
15/15
Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
Keyboard & Focus
11/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 recommendations
  • Accessibility recommendation preview...

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
66/100
A
62 mg
CO₂e / view
616.2 KB
Page Weight
80%
Cleaner Than
New Visitor
71 mg
vs
Returning (cached)
36 mg
Annual (10K/mo)
7.5 kg
Emission Segments
Data Center
3 mg
Network
18 mg
Device
41 mg
Resource Breakdown
JavaScript
88.0 KB
Images
347.0 KB
CSS
152.6 KB
Fonts
1.4 KB
HTML
11.4 KB
Other
15.8 KB
Green Hosting Verified
Akamai Technologies, Inc
Provider Match
2 recommendations
  • Carbon footprint recommendation preview...
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

276d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

02.01.2026

Valid Until

02.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (3)

shadowserver.orgblog.shadowserver.orgwww.shadowserver.org

SHA-256 Fingerprint

46:FD:A2:63:5B:0C:9A:2A:E1:E9:16:C0:A8:51:C5:BB:73:BE:DC:18...

Top Recommendations

Security recommendation preview

HTTP Headers

Developer Console

cache-control
🟡 0s(public, max-age=0, s-maxage=604800)
cdn-cache
HIT
cdn-cachedat
04/30/2026 16:29:03
cdn-edgestorageid
1346
cdn-proxyver
1.51
cdn-pullzone
66178
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

68

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

mail.shadowserver.org
mx2.shadowserver.org

Domain Information

shadowserver.org

Domain Age
22y 1m

Created

29.03.2004

Expires

08.11.2034

Last Updated

17.11.2024

Registrar

GoDaddy.com, LLC

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
B
75/100
Mobile Friendly1 breakpoint
Viewport Meta
The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
Responsive Design
Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
Touch Icons
Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
Readable Font Size
Base font size should be at least 16px on mobile to ensure text is readable without zooming.
Relative Units
Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
No H-Scroll Risk
No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
Tap Targets OK
Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
No Fixed Widths
No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
Viewport
width=device-width, initial-scale=1
1 recommendation
  • Mobile compatibility recommendation preview...

Typography & Readability

Helvetica Neue

WCAG Partial
57/100
Readability
/30
16/30

15px · LH 1.80

Hierarchy
/20
6/20
WCAG
/25
16/25

1.12:1 min contrast

Performance
/25
19/25

System fonts

Heading Font

Helvetica Neue

Sans

Body Font

Helvetica Neue

Sans15px

Contrast Ratio

1.12:1

2 issues

Reading Comfort

~38 CPL

Narrow lines
26px
h2
22px
h3
22px
h4
15px
p

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

❌ Very complex text: Flesch score 15/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 1.1:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ System fonts: Zero font loading delay — best possible LCP impact.

GGoogle FontsFlesch 15

Color Palette

6 unique colors
17.4:1 AAA Dark
#1a1a1a
Text· 45.099999999999994%
#ffffff
Background· 33%
#fec420
Primary· 10.7%
#b2964d
Secondary· 3.3%
#f5da85
Accent· 1.8%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

25 Resources

15
Scripts
10
Styles
2
Async
0
Defer

Top Script Sources

local(12)gstatic.com(1)googletagmanager.com(1)google.com(1)

Website Identity

shadowserver.org

22 years old
Location detected: 🇺🇸 United Statesvia ip
GoDaddy.com, LLCen-US

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Last analyzed: 02 May 2026 at 08:53

Historical Analysis & Change Tracking