Bank Account + IFSC detection
A publicly auditable detection pattern in the LeakSnitch engine. Category: Personal Data (PII). Severity: Critical.
Short answer
LeakSnitch detects bank account + ifsc with a base score of 90 (Critical severity). The pattern below is fully public, so any security team can verify exactly what gets flagged before rollout.
\b([A-Z]{4}0[A-Z0-9]{6})\b.*?\b(\d{9,18})\bBase score
90 / 100
Severity
Critical
Category
Personal Data (PII)
Why it matters
Indian bank account numbers paired with IFSC codes are detected together, which is the combination needed for transfers.
In the LeakSnitch engine this pattern is one of 58 public rules combined with context signals, entropy analysis, and checksum validators. A single match never blocks by itself; the full context aware scoring decides whether bank account + ifsc in a prompt is a real leak or a false positive.
Frequently asked questions
Why is the bank account + ifsc pattern public?
LeakSnitch's competitive advantage is the context aware engine, not hidden regexes. Publishing every pattern lets security teams audit, test, and trust the detection before it ships to their organization.
Can I test this bank account + ifsc pattern?
Yes. Paste sample text into the free LeakSnitch scanner in your browser and watch the exact detection in action, including severity and scoring.
Does LeakSnitch use other signals for bank account + ifsc?
This public pattern is the format based layer. The engine adds context signals, disclosure phrasing, entropy fallback, and checksum validation to confirm high confidence before blocking.
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