Kako otkriti PII u dokumentima: Potpuni vodič

What is PII?

Personally Identifiable Information (PII) is any data that can be used to identify a specific individual, either on its own or when combined with other data. The definition varies by regulation, but the core idea is the same: if it points to a person, it needs protection.

PII falls into three broad categories, each with different risk profiles and regulatory treatment:

Why PII Detection Matters

You cannot protect what you cannot find. PII detection is the foundational step in any data protection strategy. Without it, compliance is guesswork, breach response is slow, and AI systems risk leaking sensitive data.

Detection Methods Compared

There are four main approaches to PII detection. Each has trade-offs in speed, accuracy, and coverage. The best systems combine multiple methods.

What cloak.business Detects

cloak.business uses the hybrid approach: 317 custom regex pattern recognizers combined with NLP models for names, locations, and context-dependent entities. This combination delivers the highest accuracy across structured and unstructured text.

Detection covers everything from universal identifiers (emails, phone numbers, credit cards) to country-specific formats (US SSN, German Personalausweis, Japanese My Number) and secrets (AWS keys, GitHub tokens, database connection strings).

Getting Started: Implementation Steps

Integrating PII detection into your workflow takes minutes, not weeks. Here is a typical implementation path:

curl -X POST https://cloak.business/api/v1/analyze \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "John Smith, SSN 123-45-6789, lives in Berlin.",
    "language": "en",
    "entities": ["PERSON", "US_SSN", "LOCATION"]
  }'

# Response:
# [
#   { "type": "PERSON",   "start": 0,  "end": 10, "score": 0.92 },
#   { "type": "US_SSN",   "start": 16, "end": 27, "score": 1.0  },
#   { "type": "LOCATION", "start": 38, "end": 44, "score": 0.88 }
# ]

Accuracy: Why Pattern Count Matters

Most open-source PII detection tools ship with 20-30 built-in recognizers. This covers the basics — US SSNs, credit cards, email addresses — but misses the vast majority of country-specific formats. A German tax ID, a Brazilian CPF, or a Japanese My Number will pass through undetected.

cloak.business uses 317 custom pattern recognizers with checksum validation and format verification. That is 10x more coverage than default Presidio, and each recognizer is tuned for real-world formats, not just textbook examples.

Compliance Frameworks That Require PII Detection

PII detection is not optional under major data protection regulations. Each framework has specific requirements that make automated detection a practical necessity:

Where to Deploy PII Detection

Effective PII protection requires detection at every point where data enters or leaves your systems. cloak.business provides tools for each:

Key Takeaways

• Hybrid detection is the gold standard — Regex alone misses names and context; NLP alone misses formatted IDs. Combine both for the highest accuracy
• Pattern count directly impacts accuracy — 317 recognizers cover 10x more entity types than default open-source tools
• Compliance mandates detection — GDPR, CCPA, and HIPAA all require organizations to know what PII they hold
• Detect at every boundary — AI prompts, documents, APIs, and Office files all need coverage to prevent leaks

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