PII Detection Using Large Language Models: Modern Enterprise Log Security Guide

Enterprise Log Security in the Digital Age: A Practical Guide to PII Detection Using Large Language Models Introduction In today’s hyper-connected business landscape, organizations generate staggering volumes of log data daily. A recent audit revealed a major financial institution processes over 800 million API request logs weekly, each potentially containing sensitive Personally Identifiable Information (PII). Traditional security tools struggle to keep pace with evolving threats, particularly when dealing with: • Unstructured data: Temporary test entries like test_user_123@email.com often evade detection • Contextual ambiguity: Composite identifiers such as HN-004567 yield only 68% detection accuracy with regex • Multilingual challenges: Southeast Asian …