Alex's Accounts

(Somewhat) regular posts & research about backend & blockchain systems with personal stories sprinkled in.

Featured Posts

Oct 19, 2025

External calls are dangerous

This is an attempt at outlining an exhaustive list of external call footguns in Solana programs with some Solidity counterparts for people that come from that world.

Alex Lazar

Sep 15, 2025

The hardest part about auditing is...

After almost 3 years of coquetting with the idea of auditing, I finally did my first audit. Found 1H and 1M too. What stopped me for so long?

Alex Lazar

Aug 10, 2025

It's been a month...

It's been a little over a month since I last gave you an update and I'm back. Let's talk events in my life, my newfound love for Rust, why prediction markets are actually not a great business and why EV doesn't tell the whole story.

Alex Lazar

Jul 08, 2025

Building something I own

The motivation behind this newsletter, what it is going to be about, a short about me and various updates from the past ~6 months of my life.

Alex Lazar

Let's wrap up 2025

A lot of things happened this year. I'll try to extract some lessons from it all here.

Alex Lazar

Oct 19, 2025

External calls are dangerous

This is an attempt at outlining an exhaustive list of external call footguns in Solana programs with some Solidity counterparts for people that come from that world.

Alex Lazar

Sep 15, 2025