데이터 마스킹

데이터 masking (also known as data obfuscation or data anonymization) is ... process of hiding or replacing sensitive data ... placeholder characters such as asterisks (*). It protects personal in...mation like phone numbers, email addresses, ID card numbers, 및 credit card numbers while maintaining ... data ...mat ... display or testing purposes.

Select a masking type (Phone, Email, ID Card, Credit Card, Bank Card, Name, Address, or Custom), ...n enter ... data you want to mask — one item per line. Click ... Mask button to process. The tool will detect matching patterns 및 replace ... sensitive portions ... asterisks. You can load sample data by clicking ... Example button.

Phone: Masks ... middle 4 digits of phone numbers (e.g., 138****5678). Email: Keeps ... first 2 characters 및 masks ... rest be...e ... @ symbol (e.g., zh***@example.com). ID Card: Masks ... middle portion of ID numbers (e.g., 110101********1234). Credit Card: Shows only ... last 4 digits (e.g., **** **** **** 0001). Bank Card: Shows only ... last 4 digits (e.g., **********0123). Name: Keeps ... first 및 last characters ... longer names (e.g., Z***g). Address: Keeps roughly 30% at ... start 및 20% at ... end. Custom: Define your own regex pattern 및 replacement string.

For advanced use cases, select ... Custom type 및 provide a JavaScript-compatible regular expression pattern 및 replacement string. The replacement supports capture groups using $1, $2, etc. For example, pattern (\d{3})\d+(\d{3}) ... replacement $1****$2 will keep ... first 및 last 3 digits while masking ... middle.