摘要：Nowadays, since th ere are th e needs of multi-purpo se term inals for accessing com pany's internal s ystem,th e po ssibility of leak ing the critical in fo rmation is getting high er. To p revent the leakage o f the criticalin fo rmation , DLP (Data Leakag e Prevention ) solutio ns h av e been d ep loyed. The DLP solutio n also canreveal the p erson al information during the d ata leakage detection process. This wo rk is m otivated b y then eed s of privacy p rotection of DLP's process. Specifically , we have d efined two indexes s uch as PVL(Priv acy Violation Lev el) an d PPL (Priv acy Protectio n Level) for this pu rp ose. In ad dition, we have shownth e relation between th es e two ind ex es usin g e-m ail an d in stan t messeng er cases
关键词：Critical Info rm atio n Leak ag e; Privacy Protection ; Privacy Protection Mod el
