Allan Liska has more than 15 years of experience in the world of information security. Mr. Liska has worked both as a security practitioner and an ethical hacker, so he is familiar with both sides of the security aisle and, through his work at Symantec and iSIGHT Partners, has helped countless organizations improve their security posture using more effective intelligence. In addition to security experience, Mr. Liska also authored the book The Practice of Network Security and contributed the security-focused chapters to The Apache Administrators Handbook. Geoffrey Stowe lives in San Francisco and is an Engineering Lead at Palantir Technologies. His network security work has included vulnerability research, reverse engineering, incident response, and anomaly detection. There was a time when he could translate byte code to assembly without looking at a manual. Geoff started Palantir’s commercial business in 2010 and built its first platforms for distributed, large scale data analysis. He graduated from Dartmouth College with a degree in computer science.