PII Arena
LEAKS detector

titus PII detection benchmark

Measured on 2 of 41 retained datasets under the same frozen scoring and masking protocol.

4.45%fully hidden annotations
5.27%detected / overlapped
0.84%extra masking
CPU characters / second

Strengths

Highest complete-masking rates by normalized data type.

Passwords, keys & tokens22.72%87 / 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.

LanguageDatasetsFully hidden ↑Detected ↑Extra masking ↓
English124.31%29.86%0.89%
Russian11.02%1.02%0.00%

Configuration, source and version

Family
LEAKS
Revision
v1.2.9
Eligible datasets
2 / 41
Character F1
0.352
Untouched diagnostic
94.73% · 1,852 / 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.

DatasetGold annotationsFully hidden ↑Detected ↑Extra masking ↓
hivetrace1,6671.02%1.02%0.00%
secrets-issues28824.31%29.86%0.89%