Detection rules › Sublime MQL

DLP: France Social Security Number (INSEE)

Severity
high
Type
dlp
Source
github.com/sublime-security/sublime-rules

Detects messages containing French Social Security Numbers (Numéro de sécurité sociale).

Event coverage

Rule body MQL

type.outbound
and any([body.current_thread.text, subject.subject],
        // French INSEE: 15 digits in X YY MM DD DDD CCC KK format
        regex.contains(., '\b[1-378]\s?\d{2}\s?\d{2}\s?\d{2}\s?\d{3}\s?\d{3}\s?\d{2}\b')
)
and any([body.current_thread.text, subject.subject],
        regex.icontains(., 'sécurité\s+sociale|INSEE|NIR')
)

Detection logic

Scope: outbound message.

Detects messages containing French Social Security Numbers (Numéro de sécurité sociale).

  1. outbound message
  2. any of [body.current_thread.text, subject.subject] where:
    • . matches '\\b[1-378]\\s?\\d{2}\\s?\\d{2}\\s?\\d{2}\\s?\\d{3}\\s?\\d{3}\\s?\\d{2}\\b'
  3. any of [body.current_thread.text, subject.subject] where:
    • . matches 'sécurité\\s+sociale|INSEE|NIR'

Inspects: body.current_thread.text, subject.subject, type.outbound. Sensors: regex.contains, regex.icontains.

Indicators matched (2)

FieldMatchValue
regex.containsregex\b[1-378]\s?\d{2}\s?\d{2}\s?\d{2}\s?\d{3}\s?\d{3}\s?\d{2}\b
regex.icontainsregexsécurité\s+sociale|INSEE|NIR