Polymarket hit by $2.9M theft, users to be refunded
Polymarket said it contained the compromise and removed the affected dependency after attackers injected a malicious script into its frontend. Go to Source
hacks
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DeFi TVL drops 39% in 2026 amid market downturn and record hack activity
DeFi TVL fell 39% in 2026 as a broader market downturn and fallout from major exploits, including the Kelp DAO hack, weighed on the sector. Go to Source
SecondFi traces Cardano wallet exploit to address-level issue
Cardano wallet SecondFi traced the incident to an address-level issue and secured 129 million ADA after attackers drained funds from 374 addresses. Go to Source
THORChain resumes trading more than a month after $10M exploit
THORChain resumed all network activity after implementing multiple security upgrades and a vault migration to fix the vulnerabilities that led to the $10.7 million exploit. Go to Source
Q2 2026 emerges as most-hacked quarter on record with 83 incidents
Crypto hackers stole $755 million across 83 cybersecurity incidents, as cross–chain bridges remained the most costly attack vector of the crypto industry. Go to Source
Taiko urges users to withdraw as bridge exploit drains $1.7M
Taiko’s bridge and ERC20 Vault on Ethereum suffered a compromise in its chain state verification mechanism, allowing forged proofs and unauthorized withdrawals. Go to Source
Secret Network bridge exploited for $4.7M with ‘infinite mint’ bug
An exploit of the Secret Network went undiscovered for a week as the hacker moved the loot into Ethereum and then to exchanges. Go to Source
Notorious ‘sandwich attack’ bot Jaredfromsubway.eth exploited for $7.5M
Jaredfromsubway.eth was responsible for 70% of sandwich attacks on Ethereum between November 2024 and October 2025. Go to Source
G7 calls for joint action on North Korean crypto theft, cybercrime
G7 leaders broadened their warning over North Korean crypto theft to include wider cybercrime as researchers link DPRK-affiliated actors to billions of dollars in stolen digital assets. Go to Source
Litecoin X account briefly hacked to promote a fake token
The compromised social media account is merely the latest in a string of hacking incidents on X over the last several months. Go to Source