grc.com
Home of Gibson Research Corporation
Last scanned Aug 2, 2026, 1:00 AM · 7 views
Overall score
Great
Summary
Steve Gibson's and Gibson Research Corporation's Web homepage. This website uses Google Analytics. SEO is fair (60/100) and accessibility is good (85/100). Security scores good (85/100) and performance excellent (100/100). Top issue: Missing canonical link.
Steve Gibson's and Gibson Research Corporation's Web homepage.
Top issues to fix
12 issues found · 3 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
TLS certificate expires in 21 days
SecurityRenew soon or enable auto-renewal to avoid a browser-warning outage.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
2 cookies without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
+6 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
690 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Score history
-2 overall since Jul 26, 2026
- Overall
- 81
- SEO
- 60
- Security
- 85
- Performance
- 100
- Accessibility
- 85
Organization
Company details published in this site's own structured data.
Steve Gibson's and Gibson Research Corporation's Web homepage.
Meta tags
- Title
- Home of Gibson Research Corporation
- Description
- Steve Gibson's and Gibson Research Corporation's Web homepage.
- Canonical
- Language
- en
- Charset
- UTF-8
- Viewport
- Robots meta
- Manifest
- https://www.grc.com/manifest.json
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.2
- Issuer
- DigiCert Inc
- Subject
- grc.com
- Valid from
- Jul 23, 2025
- Valid to
- Aug 23, 2026
- Days until expiry
- 21
- SAN domains
- grc.com, *.grc.com, grctech.com, *.grctech.com, grc.sc, breath.cafe, biotech.cafe
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 0
Links
74 internal · 1 external · 20 broken
Images
10 total · 0 missing alt
Scripts / Styles
3 scripts · 4 stylesheets
JS / CSS size
153 B · 0 B
Page size
12.3 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- No H1 heading found
- Missing viewport meta tag
Scan details
- Requested URL
- https://grc.com
- Final URL
- https://www.grc.com/intro.htm
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 690 ms
- HTML size
- 12.3 KB
- Redirect chain
- https://grc.com → https://www.grc.com/intro.htm
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Frequently asked questions
- What technology does grc.com use?
- grc.com is built with Google Analytics.
- Is grc.com secure (HTTPS)?
- Yes. grc.com uses TLS 1.2 with a certificate issued by DigiCert Inc, valid until Aug 23, 2026.
- Who hosts grc.com?
- Hosting provider information for grc.com is not available yet.
- What is grc.com's SEO score?
- grc.com scored 60/100 for SEO in the latest analysis (fair).
- What is grc.com's overall website score?
- grc.com has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.
- Has grc.com's score changed over time?
- grc.com's overall score has declined by 2 points (from 83 to 81) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card