Defendor
ArsenWeekly Solana security — exploits, news, research decoded by a real auditor.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 27 | Founded | 6 months ago | Last Issue | 12 days ago |
| Active | |||||
Read this Newsletter
defendor.substack.comLatest Issues
Rounding Both Ways, Same Loser
Hey, it’s Arsen.
In today’s menu:
• How a bug fix introduced a rounding exploit in a stake pool
• North Korea’s own hackers just stole from North Korea
• How Fogo skips wallet signatures without skipping security
• And more…
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- *...
The Swap That Traded Against Itself
Hey, it’s Arsen.
In today’s menu:
• How a same-asset swap let an attacker manipulate their own trade
• Five chains losing bridge support before some users even notice
• $3.4B stolen last year despite institutions passing every audit...
The Withdraw That Forgot Its Own Reserve
Hey, it’s Arsen.
In today’s menu:
• How one withdrawal check forgot to protect its own account
• Certora just automated the hardest part of formal verification
• A North Korean operative spent a month inside MetaMask’s codebase
• T...
The Patch Anza Had to Ship Blind
Hey, it’s Arsen.
In today’s menu:
• Why Anza had to patch a validator bug without explaining it
• Why a “47% drop” in hack losses is actually a 28% rise
• Why AI agents already move billions in fractions of a cent
• And more…
- *...
The Index That Remembered Too Much
Hey, it’s Arsen.
In today’s menu:
• How a stale cache let one struct hijack another’s storage
• A pre-mainnet chain where whitehats get paid to drain you
• The audit patterns that cost more than the bugs they miss
• And more…
- *...
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Blockchain security — exploits, news, research decoded by a white hacker.
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