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How secure are Technology domains?
Businesses that chose the .io ending — typically in Technology — number 1,083,024 graded domains. Here's how their security looks. Aggregate only. As of 2026-08-16.
This reflects firms that picked the .io ending; most Technology businesses on a generic ending like .com aren't captured here.
Grade distribution
| Grade | Domains | Share |
|---|---|---|
| A+ | 916 | 0.1% |
| A | 3,407 | 0.3% |
| B | 30,445 | 2.8% |
| C | 107,178 | 9.9% |
| D | 160,964 | 14.9% |
| F | 780,114 | 72% |
Against the internet average
Across the entire census, 78.3% of graded domains score an F. Among .io domains it is 72% — the sector's businesses are doing better than the internet at large. As of 2026-08-16.
The Technology endings, side by side
Every ending in the census mapped to Technology, with the share of its domains scoring the failing grade:
| TLD | Domains | Share |
|---|---|---|
| .io | 1,083,024 | 72% |
| .tech | 518,543 | 77.5% |
Frequently asked questions
What share of .io domains are effectively unprotected?
72% of the 1,083,024 graded .io domains score an F, meaning core protections like enforced DMARC are missing and the domain can typically be email-spoofed. As of 2026-08-16.
Does this cover every Technology business?
No. It covers the businesses that chose the .io ending. Most Technology firms sit on a generic ending like .com and are not captured here — treat this as a sector-flavoured sample, not a census of the whole industry.
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