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Defendor

Arsen

Weekly Solana security — exploits, news, research decoded by a real auditor.

Platform
Substack
PricingOnly free issuesPublishesWeekly
Issues21Founded5 months agoLast Issue12 days ago
Active

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Latest Issues

Trusted By Design

Hey, it’s Arsen.

In today’s menu:
• How a fake RateX program drained $6M from Loopscale’s vaults
• Immunefi’s public security scoreboard — 200+ protocols rated from 0 to 100
• Why AI makes strong auditors faster — and where it still...

12 days ago
2
1

The Phantom Challenge

Hey, it’s Arsen.

In today’s menu:
• How one missing hash broke Solana’s ZK fee proof
• Eight security pillars most DeFi audits don’t touch
• What 116 AI-generated tests revealed about finding invariants
• And more…


🏴‍☠️...

19 days ago
2

Witnessed, Not Constrained

Hey, it’s Arsen.

In today’s menu:
• How an AI agent found a 4-year-old ZK circuit inflation bug
• Bounty retired, silent patch, then a $10.7M exploit
• One missing height check that split a chain permanently
• And more…


###...

a month ago
5

Halted By Design

Hey, it’s Arsen.

In today’s menu:
• The public string that gave anyone access to 86 Gnosis Safes
• One failed Sui transaction that halted every honest validator
• The Arbitrum DAO just voted on where frozen KelpDAO ETH goes
• And...

a month ago
1

The Deferred Check

Hey, it’s Arsen.

In today’s menu:
• A p-token vulnerability was discovered — batch instruction + deferred ownership = inflated wrapped SOL
• OpenZeppelin goes continuous — what their new model signals for the industry
• Vitalik on fo...

a month ago
1

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