What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

Back to Search

defcon.org

https://defcon.org· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

defcon.org

Sponsored

Hosting Provider

Comcast Cable Communications, LLC

IP Address

50.230.231.78

Server Location

🇺🇸 Seattle, United States

ASN

AS7922

Organization

Comcast Cable Communications, LLC

Nameservers

dns-1.datamerica.com.dns-3.datamerica.com.

Performance

Page Speed

444 KB

37 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Comcast Cable Communications, LLC

Technology Stack

1 Technologies Detected

CSS Frameworks

Tailwind CSS

SEO Analysis

A85/100

defcon.orgdefcon.org

DEF CON® Hacking Conference Home

The largest hacking and security conference with presentations, workshops, contests, villages and the premier Capture The Flag Contest.

Title Length32 chars

Recommended: 50-60 chars

Description Length135 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

58 rules

Sponsored

A+

Security Score

100%Excellent

Static / Informational

HTTPS

No WAF

29d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

21.03.2025

Valid Until

21.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (12)

defcon.orgwww.defcon.orgdcnextgen.orgwww.dcnextgen.orgdefcongroups.orgwww.defcongroups.orginfocon.orgwww.infocon.org+4 more

SHA-256 Fingerprint

BA:83:9D:E6:EC:6A:1D:B9:95:39:CC:57:2A:71:C3:15:D4:83:BB:1D...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

same-origin

cache-control

🟡 600s(max-age=600)

content-encoding

zstd

content-security-policy

base-uri https://defcon.org/; object-src 'none'; script-src-...

content-type

text/html; charset=UTF-8

cross-origin-embedder-policy

require-corp; report-to='default'

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mail-1.datamerica.com

Domain Information

defcon.org

Domain Age

32y 8m

Created

21.06.1993

Expires

20.06.2029

Last Updated

31.05.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Typography & Readability

ration_oneregular + Helvetica Neue

45/100

Readability

/30

5/40

12px · LH 1.00

Hierarchy

/20

18/25

3.94x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

ration_oneregular

Sans46px

Body Font

Helvetica Neue

Sans12px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

46px

35px

32px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

✅ Strong hierarchy: Headlines are 3.9x larger than body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

✅ Protected text on images: Using text-shadow for readability.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

4 Resources

Scripts

Styles

Async

Defer

Top Script Sources

forum.defcon.org(1)

Website Identity

Facebook Instagram YouTube Discord Reddit Bluesky

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Last analyzed: 20 Feb 2026 at 06:27

Historical Analysis & Change Tracking