This course undertakes a detailed examination of technology-based responses (blockchain, crypto-tax-currency, real-time transactional data collection, artificial intelligence [AI] applications) to technology-facilitated tax frauds (Zappers, Phantomware, SSaaS, the Dark Cloud and missing traders). It is valuable for both state and local as well as international practitioners, and will readily compliment criminal tax studies. This course will direct the student to consider how the sweep of technological developments in indirect taxation (digital invoices, encrypted transactional records, real-time data transmission to tax authorities, and inter- jurisdictional exchanges of digital tax data) will change/ is changing not only the collection and reporting of indirect taxes (VAT, RST, and various excise taxes) but will impact both the collection and reporting of direct taxes (personal and corporate income taxes), but also the treaties that facilitate international tax cooperation and coordination. Students should expect to be able to not only understand current technology-based tax frauds, but also be able to anticipate both the next generation of frauds, and the government's technology-based detection methods and countermeasures. Students should be able to see this as an iterative process where a technology-based fraud application is met by a government countermeasure only to find that criminal elements are fast advancing new technologies to be met yet again by more advanced government countermeasures. Public and private blockchain storage of tax data, and proposals for crypto-tax-currency based tax systems will be examined. Because this course works in a highly fluid tax/technology space the specific topics considered may not remain the same from year-to-year. This edition will examine the tax issues embedded in the technology of (1) sales suppression -- Zappers, Phantomware, SSaaS, and the Dark Cloud; (2) Missing Trader frauds -- notably frauds in CO2 permits, VOIP; and (3) excise tax avoidance -- notably frauds involved in cigarette smuggling and legalized marijuana. Both traditional organized criminal activity as well as terrorist funding activity will be explored. JD students are not permitted to enroll in the online section of any tax courses without receiving prior approval from the Assistant Dean for Graduate, International, and Online programs.