David Holmes is a Threat Research Evangelist for F5 Networks. He researches cryptography, hackers and the Internet of Things (IoT). Holmes has spoken at over 40 conferences on all six developed continents, including RSA Europe. He has over 25 years experience in security and software development. Holmes writes a bi-weekly column at SecurityWeek, and has had the good fortune to write for DarkReading, SC Magazine, Network World and many other computer security magazines and websites. He has four patents pending for F5 and still contributes code to open-source projects such as OpenSSL.