emptytra.in

made by Brian Abelson, submitted by dylnuge
emptytra.in is an art project featuring a live feed of the JMZ train in New York City at a busy intersection. In the words of the creator, it "provides ongoing, anonymized documentation of the pandemic as manifested through the quieting city."

Introduction to Cybersecurity

made by milesmcc, submitted by dylnuge
A wonderful primer on cybersecurity concepts ranging from phone phreaking to cryptography, complete with exercises! This is incredible if you're new to cybersecurity or looking for materials to help teach people who are.