eBPFChirp —The #1 eBPF newsletter on Substack 🐝

eBPFChirp is your go-to newsletter for all things eBPF—where complex topics are made simple, real-world applications are dissected, and the latest advancements in the ecosystem are delivered directly into your inbox.

Each issue delivers practical examples, deep dives, and hands-on insights to help you confidently build, debug, and innovate with eBPF.

Whether you're an engineer, researcher, or just curious about how eBPF is shaping modern systems, eBPFChirp offers something for you.

✍️ Posting Schedule

As a free subscriber, you’ll get a new issue of eBPFChirp every Tuesday 2PM CET, focused on making complex eBPF topics approachable through real-world examples, implementation deep dives, and the latest developments in the ecosystem.

Paid subscribers receive one extra post each month featuring exclusive interviews with renowned eBPF engineers, builders, and maintainers. These deep dives uncover hard-won lessons, performance insights, and practical takeaways from real-world deployments. Paid subscribers also gain access to the full Q&A archive, where I answer detailed community questions not covered in public posts.

What People Are Saying

📌 "I'm a huge fan of the eBPF-related work you share. You write great blogs that helped me in my eBPF journey."
— Alex Ilgayev (Head of Security Research, Cycode)

📌 "Hi Teo—Just read another eBPFChirp today. Really cool stuff, keep it up!"
— Dimitrij Klesev (Tech Lead, WhizUs)

📌 "Teodor—I have been very impressed with your blogs."
— Nat Natraj (Co-founder, CEO, AccuKnox)

📌 "Thank you for sharing. This is the area I'm currently focusing on, and it’s reassuring to know I’m not alone; I draw a lot of inspiration from people like you."
— Amit Singh (Lead Architect, Secure Networking)

📌 "Nice blog!"
— Bill Mulligan (Cilium & eBPF Community Pollinator, Isovalent at Cisco)

PTO policy: Each year, I take four weeks off. During those weeks, you may receive no new posts. The time off is important in helping me recharge and write better stuff for the rest of the year ✨