David Litchfield (born 1975) is a security expert from the United Kingdom. Anne Saita, writing for Information Security magazine, called him along with his brother Mark Litchfield, "World's Best Bug Hunters" in December, 2003.
Litchfield has found hundreds of vulnerabilities in many popular products, among which the most outstanding discoveries in products by Microsoft, Oracle and IBM. At the Blackhat Security Briefings in July 2002 he presented some exploit code to demonstrate a buffer overflow vulnerability he had discovered in Microsoft's SQL Server 2000. Then six months later, on 25 January 2003, persons unknown used the code as the template for the SQL Slammer Worm.
After several years in vulnerability research, Litchfield made a move into Oracle forensics and has documented how to perform a forensic analysis of a compromised database server in a series of white papers – Oracle Forensi…Read more on Wikipedia