👋 Hi! I’m Octav.

Welcome to my blog!

With a strong interest in Cybersecurity and Software Development, I explore both building and securing digital solutions.

Here, you’ll find posts related to cybersecurity, web technologies, and writeups from my experiences.

A favorite quote: “A jack of all trades is a master of none, but often times better than a master of one.”

Enjoy exploring, and happy reading! 😊

Proposal: A new BPF helper function

There is no BPF helper function that can override parameters of a system call that are passed as direct values into registers. Should we add it?

November 1, 2024 Â· 4 min

The VM Inside Your Kernel 👻

Inside your Linux kernel there’s a VM. It runs a specific bytecode. It can also JIT compile that bytecode. And it can ghostly track your processes behaviour. It exists since 1992. Its name? BPF

October 1, 2024 Â· 14 min

A Quick QUIC Explanation 🦆

QUIC aspires to be the 21st-century replacement of TCP. In 2023, Cloudflare assessed QUIC usage in around 30% of the requests they processed. The adoption of QUIC is growing at a rapid pace.

September 20, 2024 Â· 5 min