LEAKS detector
kingfisher PII detection benchmark
Measured on 2 of 41 retained datasets under the same frozen scoring and masking protocol.
2.92%fully hidden annotations
3.22%detected / overlapped
0.80%extra masking
—CPU characters / second
Strengths
Highest complete-masking rates by normalized data type.
Passwords, keys & tokens14.88%57 / 383
Bank accounts & cards0.00%0 / 169
Documents & identifiers0.00%0 / 609
Watch list
Lowest observed complete-masking rates; inspect before deployment.
Addresses & locations0.00%0 / 176
Phone numbers & email0.00%0 / 390
People's names0.00%0 / 228
Language coverage
The overall leader can differ from the best choice for one language slice.
| Language | Datasets | Fully hidden ↑ | Detected ↑ | Extra masking ↓ |
|---|---|---|---|---|
| English | 1 | 13.89% | 15.97% | 0.84% |
| Russian | 1 | 1.02% | 1.02% | 0.00% |
Configuration, source and version
- Family
- LEAKS
- Revision
- 2.1.0
- Eligible datasets
- 2 / 41
- Character F1
- 0.365
- Untouched diagnostic
- 96.78% · 1,892 / 1,955
- Benchmark version
- 1.0.3 · 2026-09-09
- CPU seconds / 10k chars
- Not measured
- GPU seconds / 10k chars
- Not measured
source overlap: secrets-rules
Results by dataset
Complete masking is primary; detection shows whether any character overlapped.
| Dataset | Gold annotations | Fully hidden ↑ | Detected ↑ | Extra masking ↓ |
|---|---|---|---|---|
| hivetrace | 1,667 | 1.02% | 1.02% | 0.00% |
| secrets-issues | 288 | 13.89% | 15.97% | 0.84% |