Question
Is it possible to filter for personal information?
Answer
By using regular expressions, you can detect a variety of patterns.
Notes
These settings are designed to detect specific strings or sequences of numbers.
Therefore, there is a possibility that strings you do not intend to detect, such as product model numbers or unrelated place names, may also be detected.
Additionally, since personal information in email signatures is also subject to detection, we recommend setting a higher count.
*When using these settings, be sure to adjust the [Count] in advance and confirm that the emails or strings you want to filter are detected.
Credit Card Numbers
Detects strings in the format of various credit card numbers as shown below.
- 4123-4567-8901-2345: Format starting with 4
- 5300 1234 5678 9012: Format starting with 51–55
- 3582123456789012: Format starting with 3528–3589
- 3712-456789-12345 (4-6-5 digits): Format starting with 34 or 37
- 3001-123456-1234 (4-6-4 digits): Format starting with 300–305, 36, 38, or 39
- 6011-0000-1111-2222: Format starting with 6011
Email DLP Rule Settings
- Search Field: Body (including attachments)
- Filter Conditions: matches regular expression
Search string:
\b(?:(?:4\d{3}|(?:5[1-5]\d{2}|2(?:22[1-9]|2[3-9]\d|[3-6]\d{2}|7[0-1]\d|720))|62\d{2}|35(?:2[89]|[3-8]\d)|6011)(?:[- ]?\d{4}){3}(?:\d{3})?|(?:3[47]\d{2}|30[0-5]\d|3[689]\d{2})(?:[- ]?\d{6}[- ]?\d{4,5}|(?:[- ]?\d{4}){2}[- ]?\d{2,4}))\b- Count (recommended): 20
Phone Numbers (Domestic)
Detects general Japanese domestic phone numbers.
*Please note that similar formats, such as membership numbers, may also be detected.
*The following regular expression is just an example. Please verify with the strings you expect to use before applying.
*International phone numbers have different formats depending on the country. If you want to detect international phone numbers, please add and verify the patterns for the target country's phone numbers before use.
- 090-1234-5678: Starts with 0, 3-4-4 digit format
- 03-1234-5678: Starts with 0, 2-4-4 digit format
- 0123-45-6789: Starts with 0, 4-2-4 digit format
- 0120-123-456: Toll-free, starts with 0, ends with 3 digits
- (0120) 123-456: Pattern with area code in half-width parentheses
- Patterns with no separators or separated by half-width spaces
Email DLP Rule Settings
- Search Field: Body (including attachments)
- Filter Conditions: matches regular expression
Search string:
(?:^|[^0-9])(?:\(0\d{1,4}\)|0\d{1,4})[- \s]?\d{1,4}[- \s]?\d{3,4}(?:[^0-9]|$)- Count (recommended): 20
Prefectures
Detects the names of Japanese prefectures.
Email DLP Rule Settings
- Search Field: Body (including attachments)
- Filter Conditions: matches
Search string:
Georgia GA|California CA|Florida FL|New York NY- Count (recommended): 50