Here’s an experiment being run by undergraduate computer science students everywhere: Ask ChatGPT to generate phishing emails, and test whether these are better at persuading victims to respond or click on the link than the usual spam. It’s an interesting experiment, and the results are likely to vary wildly based on the details of the … Read More “LLMs and Phishing” »
Category: essays
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Congress is currently debating bills that would ban TikTok in the United States. We are here as technologists to tell you that this is a terrible idea and the side effects would be intolerable. Details matter. There are several ways Congress might ban TikTok, each with different efficacies and side effects. In the end, all … Read More “Banning TikTok” »
When is it time to start worrying about artificial intelligence interfering in our democracy? Maybe when an AI writes a letter to The New York Times opposing the regulation of its own technology. That happened last month. And because the letter was responding to an essay we wrote, we’re starting to get worried. And while … Read More “Defending against AI Lobbyists” »
In early 2021, IEEE Security and Privacy asked a number of board members for brief perspectives on the SolarWinds incident while it was still breaking news. This was my response. The penetration of government and corporate networks worldwide is the result of inadequate cyberdefenses across the board. The lessons are many, but I want to … Read More “SolarWinds and Market Incentives” »
The field of machine learning (ML) security—and corresponding adversarial ML—is rapidly advancing as researchers develop sophisticated techniques to perturb, disrupt, or steal the ML model or data. It’s a heady time; because we know so little about the security of these systems, there are many opportunities for new researchers to publish in this field. In … Read More “Attacking Machine Learning Systems” »
Hacker “Capture the Flag” has been a mainstay at hacker gatherings since the mid-1990s. It’s like the outdoor game, but played on computer networks. Teams of hackers defend their own computers while attacking other teams’. It’s a controlled setting for what computer hackers do in real life: finding and fixing vulnerabilities in their own systems … Read More “AIs as Computer Hackers” »
Maintaining bitcoin and other cryptocurrencies causes about 0.3 percent of global CO2 emissions. That may not sound like a lot, but it’s more than the emissions of Switzerland, Croatia, and Norway combined. As many cryptocurrencies crash and the FTX bankruptcy moves into the litigation stage, regulators are likely to scrutinize the cryptocurrency world more than … Read More “Decarbonizing Cryptocurrencies through Taxation” »
Earlier this month, I and others wrote a letter to Congress, basically saying that cryptocurrencies are an complete and total disaster, and urging them to regulate the space. Nothing in that letter is out of the ordinary, and is in line with what I wrote about blockchain in 2019. In response, Matthew Green has written—not … Read More “On the Dangers of Cryptocurrencies and the Uselessness of Blockchain” »
My proof of COVID-19 vaccination is recorded on an easy-to-forge paper card. With little trouble, I could print a blank form, fill it out, and snap a photo. Small imperfections wouldn’t pose any problem; you can’t see whether the paper’s weight is right in a digital image. When I fly internationally, I have to show … Read More “Why Vaccine Cards Are So Easily Forged” »
“If you think any of these systems are going to work as expected in wartime, you’re fooling yourself.” That was Bruce’s response at a conference hosted by US Transportation Command in 2017, after learning that their computerized logistical systems were mostly unclassified and on the Internet. That may be necessary to keep in touch with … Read More “Vulnerabilities in Weapons Systems” »