Despite $83 billion flowing through decentralized finance, less than 2% of that total value locked carries any insurance coverage, according to Nexus Mutual founder Hugh Karp. In April 2026 alone, over $600 million was lost to security events — and since DeFi was coined, uninsured lending protocols have shed $7.7 billion to exploits. Nexus Mutual, the sector's dominant player, holds just $123.5 million in TVL across the entire DeFi insurance market — a rounding error against the exposure it's meant to cover.
The coverage gap isn't just a size problem — it's structural. Early DeFi insurance products were priced around smart contract bugs, but attackers have pivoted to offchain failures: compromised private keys, phishing, and social engineering now account for the largest share of losses. "The premiums required become prohibitively expensive," Karp said. Many users simply opt out,…
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