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Web3sec News

Chirag Agrawal

Stay ahead with Web3Sec for web3 security, blockchain, DeFi, and exchange threat intel on hacks, vulnerabilities, security tools, and events.

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Substack
PricingOnly free issuesPublishesWeekly
Issues54Founded3 years agoLast Issuea month ago
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Latest Issues

The .fi Files: A Field Report on DNS Hijacking in DeFi

when did we stop calling this a campaign?

Cow.fi got hijacked. DNS level. Registrar compromise, almost certainly.

Same thing that happened to Steakhouse.

Same thing that happened to HypurrFi.

Same thing that happened to Neutrl.

F...

a month ago
4

Web3 Security in Q1 2026: Over $450M Lost, and the Code Wasn’t Even the Problem

I’ve been tracking Web3 security for a while now. and every quarter i tell myself “okay this time i’ll wait for all the reports to drop before writing anything.”

Q1 2026 made that easy. because once you read through all of it — the exploit...

2 months ago
4

NPM Supply Chain Attacks: How Hackers Stole Millions from Crypto Wallets

Happy New Year, anon! 🎉

Hope you made it through the holidays without getting drained, both mentally and cryptographically. While most of us were enjoying time off, attackers decided Christmas Day was the perfect time to backdoor Trust Wa...

5 months ago
4

How Multi-Agent AI Is Catching the 80% of Hacks That Audits Miss

The numbers are stark: $2.9 billion lost to exploits in 2024 alone. But here’s the part that should concern every Web3 builder—approximately 70% of those major hacks occurred in professionally audited contracts.

Traditional audits are...

6 months ago
6

Web3 Security Weekly

Hey fam,

October’s closing out with a clear message, the biggest threats aren’t always in your smart contracts they’re in the code you never think to check. Between massive npm compromises, sophisticated phishing campaigns, and record-brea...

7 months ago
3
2

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