Not a Course
Courses teach you Solidity. You already read code. What you're missing is knowing where the critical bug hides.
For Web3 auditors & security researchers
Most auditors read every line and still miss the critical. Every week, Arsen breaks down a real exploit and the system to catch it in any codebase.
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Join 1,600+ auditors finding deeper bugs.
Arsen shows you how real bugs happened, so you can find the next one yourself.
Courses teach you Solidity. You already read code. What you're missing is knowing where the critical bug hides.
Threads tell you a protocol lost $40M. They don't show you the line, the assumption, or why every audit missed it.
Checklists catch what everyone catches. You need a way of reading code that finds what they don't.
Every issue: the bug, the root cause, and the check that would have caught it. Read it in ten minutes. Use it in your next audit.
Reader Name
Security Researcher @ Firm
★★★★★
Placeholder quote. Swap in what a real reader said about the newsletter: what changed in how they audit, a bug they found, why they read every issue.
Sep 11, 2026
Reader Name
Independent Auditor
★★★★★
Placeholder quote. A shorter one works too. Two or three sentences reads best in this layout.
Sep 28, 2026
Reader Name
Smart Contract Engineer
★★★★★
Optional bold headline line.
Placeholder quote. Cards with a headline show it in bold above the quote, like the founderos example.
Oct 2, 2026
Reader Name
Bug Bounty Hunter
★★★★★
Placeholder quote. Longer quotes are fine: the grid is a masonry layout, so cards of different heights stack neatly in columns without gaps. This one is longer on purpose to show that.
Oct 5, 2026
Reader Name
Protocol Engineer
★★★★★
Placeholder quote.
Oct 9, 2026
Reader Name
Junior Auditor
★★★★★
Placeholder quote. Six cards fills two rows of three on desktop; any number works.
Oct 12, 2026