Security snapshot
Across 4 c21 WordPress sites indexed by TLDWP, compared to the all-WordPress average.
Grade A 25%
Grade B 0%
Grade C 0%
Grade D 50%
Grade F 25%
Fail the header check (F)25%vs 82.5% avg
Leak usernames0%vs 38.5% avg
Expose a sensitive file0%vs 1.8% avg
Use HTTPS100%vs 96.2% avg
What stands out
TLDWP currently associates 4 indexed WordPress sites with c21, equivalent to 0% of the current WordPress dataset.
The largest measured difference is header-grade F: 25% versus 82.5% overall (-57.5 percentage points).
Username enumeration is 0% vs 38.5% overall (-38.5 pp); HTTPS adoption is 100% vs 96.2% overall (+3.8 pp); Sensitive-file exposure is 0% vs 1.8% overall (-1.8 pp).
These are observational associations among sites where TLDWP detected c21, not evidence that the technology, provider, or domain attribute caused a security outcome. See the overall WordPress security baseline.
| Domain | Version | Exposures | Headers | Last Checked |
|---|---|---|---|---|
| c*2*.c*.uk | — | A | Aug 27, 2026 | |
| c*1*e*i*.net | — | D | Aug 23, 2026 | |
| c*e*1.com | — | D | Aug 17, 2026 | |
| c*m*e*c*2*.c*.jp (WP 7.0.2) | — | F | Jul 26, 2026 |
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