Darknet Diaries is just amazing, it's always really interesting, I never get bored
The Lockdown is a pretty good podcast about digital (and physical) privacy and security
The Privacy, Security, and OSINT Show by Michael Bazzell @ inteltechniques.com was really great, but they took it down last year. Fortunately there is still a torrent of the full archive of the show floating around: https://lemmings.world/post/11120738
The Ask Noah Show is all about Linux and open source software
Basically everything produced by Jupiter Broadcasting is just awesome, including Linux Unplugged and Self-Hosted
Linux Matters can also sometimes have really good content (Here's their Mastodon profile: https://ubuntu.social/@linuxmatters)
Brodie Robertson's Tech over Tea (I'm sorry I don't have a better way to link to it than Apple Podcasts)
The Linux Experiment's weekly Linux & open source news podcast (which you can also follow from the Fediverse btw, Castopod is just an awesome piece of software)
Doesn't I2P encrypt the traffic already?