The Bulgarian Electronic Information System for Civil Registration and Administrative Services (CRAS) is a centralized store for personal data of all Bulgarian citizens. Citizens are identified using Personal Identification Numbers (Personal ID) issued and maintained by the CRAS system. This function is like the Social Security Number (or similar) identification in other countries. The system stores as personal data names, addresses, marital status, death, parentage, passport data, nationality and relatives – children, brothers and sisters of about 10.5 million citizens (counting 2 million dead people). The system is built on a mixture of standard modern technologies such as PKI, digital certificates, smart cards, web, SQL databases and is leading provider of eServices in Bulgarian Public sector.