2600: The Hacker Quarterly, Spring 2021

The 2021 volume, in which the magazine's arguments with cryptocurrency, quantum computing and machine learning take as much space as its network security coverage.

Spring runs "Anonymity, Privacy, and Reality," "Ham Radio, SMS, and the ISS," "Randomize Your Exit Node" and "Logging Discord Tokens." It also prints "A Layman's Intro to Quantum Computers," "Inside Job: Exploiting Alarm Systems and the People Who Monitor Them" and "A Proposal for the Elimination of Passwords." Summer covers "More Privacy and Better Security Through Email Diversification," "Fluc Google's FLoC," "The Demise of Network Security" and "Vulnerabilities in Deep Artificial Neural Networks." Autumn prints "Wherever You Go, There You Are," "Where Have All the Tor Sites Gone?," "The FBI Communications Breach of 2010" and "Hacking NYC MTA Kiosks." Winter adds "L-Band: Frequencies and Equipment You Need to Know About," "In the Trenches: Working as a Security Analyst," "Inside the New World of Cryptocurrency Phishing" and "leet.c."

"The Phreak's Field Guide to Identifying North American Phone Switches" begins in the Autumn issue and concludes in Spring 2022. The serial "An Atavistic Freak Out" starts in Summer and ran to a final episode two years later.