grc.com

Grc.com Computer security software solutions & more.

Gibson Research Corporation develops computer security software and utilities, including SpinRite and Shields Up. The site serves users seeking security tools and data recovery solutions. Founded by Steve Gibson, GRC is known for its focus on internet security and hard drive diagnostics.

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Authority

97/100

Safety

90/100

Registered

Dec 17, 1991

34 years old · Tucows Domains Inc.

On record

since 2006

All 5 safety checks passed (Sep 3, 2026).

Current facts

What AboutUs observed on the live site and in WHOIS/DNS today. These are measurements, not an endorsement of the site.

checked now

Domain registered Dec 17, 1991 — 34 years old.

checked now

Registrar today: Tucows Domains Inc. — unchanged since AboutUs began tracking (Jul 21, 2026).

checked now

Live site responds over HTTPS.

Trust record

Authority & Safety, with the evidence

How this is scored →

Authority 97/100 — ahead of 97% of scored sitesClear

Why this authority score

Prominence (Tranco rank #22,384; Open PageRank 4.2/10)+13
Verified continuity: 34.7 years (RDAP registration)+11
Security & email hygiene+4
Prominence × continuity interaction+1
Calibration adjustment (published map)+23

Every point maps to a sentence. These lines sum to the model score of 52/99, which is what places this site at 97/100 against every other scored site.

Safety evidence

All checked sources came back clean

Site history

Dated record — historical facts always carry their date; self-description below is the 2013 record.

1991
Domain registered (Dec 17, 1991).
2006
First tracked by AboutUs (Jun 20, 2006); profile edited 4 times through 2013.
2013
Self-description at the time:
“Grc.com Computer security software solutions & more.”
2026
Checked today — All 5 safety checks passed (Sep 3, 2026).

✓ domain continuity 34 years registered✓ live verified Sep 3, 2026

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