Jonathan Zdziarski is better known as the hacker “NerveGas” in the iPhone development community. His work in cracking the iPhone and helped lead the effort to port the first open source applications. His initial book on the iPhone, iPhone Open Application Development, developed an immediate cult following and taught developers how to write applications for the popular device before the SDK was ever conceived. Prior to the release of iPhone Forensics, Jonathan wrote and supported an iPhone forensics manual distributed exclusively to law enforcement, and has assisted many forensic examiners in their investigations. Jonathan frequently consults to law enforcement agencies and teaches an iPhone forensics workshop in his spare time to train forensic examiners and corporate security personnel.

Jonathan is also a full-time research scientist specializing in machine learning technology to combat online fraud, spam, and develop networking products capable of learning how to better protect customers. He is founder of the DSPAM project, a high-profile, next-generation spam filter that was acquired in 2006 by Sensory Networks, Inc. He lectures widely on the topic of spam and is a foremost researcher in the fields of machine-learning and algorithmic theory.

Jonathan's website is zdziarski.com.