Last week, IVIX and Carahsoft co-hosted a webinar panel on “Crypto: Unmasking Tax Non-Compliance and Other Financial Crimes in the Digital Age,” featuring a powerhouse trio of industry veterans who have played an instrumental role in successfully tackling financial crime: former IRS Commissioner Charles Rettig, former IRS-Criminal Investigation Chief Don Fort, and Head of Global Investigations for TRM Labs, Chris Janczewski.
The conversation centered on recent high-profile financial crime investigations in which the three panelists were instrumental in solving. The team also discussed the pivotal role of crypto in financial crimes and hidden economic activity, as well as crypto’s contribution to the tax gap, the role of open source intelligence (OSINT) and blockchain analysis, and tools federal and state tax authorities can use to detect hidden crypto activity.
Chris Janczewski, Charles Rettig, and Don Fort each helped modernize financial crime enforcement by championing the use of technology, collaboration, and innovation to expose hidden assets and hold bad actors accountable in an increasingly digital world.
During his tenure as IRS Commissioner from 2018 to 2022, Charles Rettig prioritized the modernization of IRS enforcement efforts, with a sharp focus on combating financial crime in the digital age. He championed the agency’s investment in data analytics, artificial intelligence, and cryptocurrency tracing tools, recognizing that tax evasion and financial fraud were increasingly occurring through complex, tech-enabled channels. Rettig also expanded the IRS Criminal Investigation division’s capabilities to target cybercrime, money laundering, and illicit use of virtual currencies—supporting high-profile takedowns of darknet marketplaces and digital asset abuse.
As the lead virtual currency expert on the Welcome to Video case, then-IRS Special Agent Christopher Janczewski played a pivotal role in unraveling the financial infrastructure of one of the largest child exploitation networks ever uncovered on the dark web. When a tip revealed that the site was accepting bitcoin to facilitate the download of illicit content, it was Janczewski’s expertise in blockchain analysis that enabled the investigative team to trace cryptocurrency transactions to specific users and ultimately to the site’s administrator. His work, alongside that of his partners, directly contributed to the identification and arrest of hundreds of offenders, the rescue of 25 exploited children, and the dismantling of a global network built on anonymity and digital currency.
As Chief of IRS-Criminal Investigations (IRS-CI) from 2017 to 2020, Don Fort expanded the agency’s reach into cybercrime, cryptocurrency enforcement, and global money laundering, while continuing to pursue high-impact cases involving tax evasion, public corruption, and transnational crime. Fort spearheaded efforts to integrate cutting-edge technologies—like blockchain analytics and open-source intelligence—into the agency’s investigative toolkit, enabling IRS-CI to stay ahead of increasingly sophisticated criminal networks.
The panelists’ discussion and reflection on recent high-profile cases such as the Welcome to Video case revealed three key takeaways:
To watch the webinar replay, go to Carahsoft’s IVIX microsite events page. Learn more about IVIX and our role in helping authorities gain complete visibility into hidden activity at https://www.ivix.ai/.