Defendor
ArsenWeekly Solana security — exploits, news, research decoded by a real auditor.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 16 | Founded | 4 months ago | Last Issue | 8 days ago |
| Active | |||||
Read this Newsletter
defendor.xyzLatest Issues
The Free Variable
Hey, it’s Arsen.
In today’s menu:
• How a newly churned node reconstructed a vault key and drained $10.7M
• The end of Code4rena
• Four proof fields no one verified — and why that breaks a $60M blockchain
• And more…
🏴...
The Signer You Trust
Hey, it’s Arsen.
In today’s menu:
• How a phished npm maintainer drained $160K from live Solana dApps
• The fuzzer that surfaced a phantom stake bug in seconds
• AI agents at 70% on exploit construction — still failing at the hard pa...
Vulnerabilities that aren't
Hey, it’s Arsen.
In today’s menu:
• Reentrancy, float drift, and unchecked CPIs — all noise in Solana
• The phishing email that passes DKIM, SPF, and DMARC
• How fixing one rounding error introduced another
• And more…
�...
150K SUI from Code Nobody Called
Hey, it’s Arsen.
In today’s menu:
• How a 17-month-old Sui package drained a live rewards pool
• Why Litecoin needed a 13-block reorg to recover
• The Solana event your relayer fills that never happened
• And more…
🏴☠️...
One Character Off
Hey, it’s Arsen
In today’s menu:
• The one-character Solana bug — and what it silently broke
• The security layer Solana just built that other chains wish they had
• Anchor’s ground-up rewrite — 94% smaller, compile-time safe
• And...
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