tag:speakerdeck.com,2005:/groovecoder tag:speakerdeck.com,2005:Talk/1507789 2026-02-20T14:50:50-05:00 2026-02-20T15:13:55-05:00 This talk is a fast, practical tour of real-world AI hacking: not sci-fi doom, but hands-on exploits against LLMs and agents that are already embedded in developer tools, browsers, chatbots, and cloud systems. NOTE: The Firefox example is a PROTOTYPE. I'm not sure how well it will come across as a slides-only deck. luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/1265115 2024-10-22T12:11:47-04:00 2024-10-23T12:39:52-04:00 Want to learn more about data networks & security? This high-level survey of centuries of data networking takes the audience all the way from homing pigeons in ancient Egypt to Napoleon's semaphore network to HTTPS, concluding with practical advice for how the audience can maximize HTTPS security. luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/1146701 2024-02-15T13:46:06-05:00 2024-02-15T16:13:36-05:00 luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/859246 2022-04-08T15:13:35-04:00 2022-04-08T18:08:36-04:00 This talk starts with the simplest (and oldest) forms of secret communication: from the first invisible ink, to the ancient “scytale” anagram tool, to Caesar ciphers used in ancient Greece and Rome. These simple techniques give an accessible introduction to fundamental aspects of all cryptographic systems thru-out history. In particular, the establishment of a secure “key-exchange”, which will be shown thru-out the talk to be the most important and practical knowledge for developers. From those ancient foundations, it explores the evolution of cryptography over centuries of “battle” between code-makers and code-breakers: from frequency cryptanalysis of the Islamic Golden Age, to the Alberti Cipher Disk and the Vigenère Square used in Renaissance and pre-Industrial Europe, to the World War II stories of making and breaking the Enigma machine – the first popular use of electromechanical cryptography, and the pre-cursors to modern computers. Coming into contemporary times, it covers the development of computer cryptography: from the “Lucifer” cipher that would become the Data Encryption Standard (DES), to the Advanced Encryption Standard (AES) used today in protocols like TLS/HTTPS, along with modern key-exchange protocols like RSA, Diffie-Hellman, and Elliptic Curve. luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/714649 2021-03-15T12:19:02-04:00 2021-03-15T12:25:53-04:00 luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/722442 2021-04-06T08:42:09-04:00 2021-04-06T08:47:02-04:00 luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/425654 2018-01-24T17:25:33-05:00 2022-09-20T11:01:07-04:00 Tips, techniques, and tools for protecting your online privacy & security. Pulled together from Mozilla, EFF, Wired, and Consumer Reports resources. First presented at Tulsa Library. luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/566752 2019-10-22T08:42:43-04:00 2019-10-22T09:00:09-04:00 Have you always wanted to learn more about cryptography? This high-level survey of crypto takes the audience all the way from Scytales and Caesar ciphers in ancient Greece, to Vigenere Square, to Enigma in World War II, to TLS, and even Post-Quantum Cryptography! luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/514882 2019-05-07T20:30:31-04:00 2019-05-07T20:49:53-04:00 Whatever their price, Bitcoin and cryptocurrencies continue to provide interesting technical and security opportunities. This talk gives a comprehensive introduction of bitcoin & cryptocurrency technology, and then analyzes how cryptojacking attacks are executed with JavaScript. luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/505983 2019-03-25T16:18:40-04:00 2019-03-25T16:25:21-04:00 The web is the biggest legacy application ever developed or supported by software engineers, and it's also blurring the line between the consumption of data and the leaking of personal details. Browser makers may be the only line of defense. This deck was first presented at the 2019 Tulsa Cyber Summit. It's an expanded presentation of the material from: "Can we build a privacy-preserving web browser we all deserve?" XRDS: Crossroads, The ACM Magazine for Students - Pseudonimity and Anonymity Volume 24 Issue 4, Summer 2018 Pages 40-44 luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/530263 2019-07-17T14:52:51-04:00 2019-07-17T14:53:42-04:00 For simple, privacy-preserving data-sharing. luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/425655 2018-01-24T17:29:00-05:00 2018-01-24T17:30:05-05:00 What is it? How does Firefox use it? How can you use it as a web developer? luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/414641 2017-11-03T12:31:12-04:00 2017-11-03T12:51:23-04:00 Tor is an open anonymized network and web browser. Millions of users connect with Tor every day. Is your code ready for them? This talk introduces Tor, provides an overview of how it works and the adversaries and attacks its designed to stop, and shows that optimizing your code for Tor is quite practical, and improves your code for everyone. luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/411684 2017-10-17T09:28:02-04:00 2017-10-18T18:49:59-04:00 Short summary of some of the privacy & security fixes, features, and enhancements landing in Firefox 57. luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/411689 2017-10-17T09:39:57-04:00 2017-10-18T18:49:27-04:00 An high-level primer on dark web tech (for non-developer end-users) luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/409947 2017-10-04T18:39:29-04:00 2017-10-04T18:46:52-04:00 Tor is an open anonymized network and web browser. Millions of users connect with Tor every day. Is your code ready for them? This talk introduces Tor, provides an overview of how it works and the adversaries and attacks its designed to stop, and shows that optimizing your code for Tor is quite practical, and improves your code for everyone. luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/411914 2017-10-18T18:28:52-04:00 2017-10-18T18:30:30-04:00 From July-August 2018, we conducted a study to learn privacy settings effects' on website breakage. luke crouch (@groovecoder) tag:speakerdeck.com,2005:Talk/385472 2017-03-29T08:50:32-04:00 2017-03-29T09:07:45-04:00 A 60-minute overview of content from The Code Book by Simon Singh, covering secrecy from ancient Greece to Enigma machines used in World War II. This is a cursory, high-level, mostly-non-mathematical survey of centuries of crypto - good as an intro to crypto for developers and non-devs alike. luke crouch (@groovecoder) 2026-02-20T14:50:50-05:00