David Litchfield (born 1975) is a renowned security expert from the United Kingdom, who focuses on the discovery and publication of computer security vulnerabilities with a special focus on database server software. Information Security Magazine voted him as "The World's Best Bug Hunter" for 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 Forensics Parts 1 to 6. He is in the process of researching and developing an open source tool called the Forensic Examiner's Database Scalpel (F.E.D.S).
Business and researcher
Litchfield founded a company named Cerberus Information Security which was acquired by @stake in July 2000. A year and a half later he founded Next Generation Security Software with five colleagues from @stake. He is the author of various software packages, and also of many technical documents on security issues. He is the author of the Oracle Hacker's Handbook and is a co-author of the Database Hacker's Handbook, the Shellcoder's Handbook and SQL Server Security. He was also a contributing author for Special Ops.
- Saita, Anne (2003) Best Bug Hunters. Infosecuritymag.techtarget.com. Retrieved on 2 January 2014.
- David Litchfield talks about the SQL Worm in the Washington Post. Archive.cert.uni-stuttgart.de (29 January 2003). Retrieved on 2 January 2014.
- Oracle Forensics and Incident Response. databasesecurity.com
- Gray, Patrick (29 May 2007) Owning database forensicsy. theage.com.au.
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