Concerns about code vulnerabilities are fading in the crypto space, but more sophisticated scam tactics are emerging as protocol security improves.
Crypto hackers stole $3.3 billion in 2025, but the number of attacks fell sharply as losses became concentrated in fewer, more sophisticated supply-chain exploits, according to new data from blockchain security firm CertiK shared with Cointelegraph.
While total losses remained elevated, the decline in incident counts and a drop in median theft sizes suggest that protocol-level security is improving, pushing attackers away from simple code vulnerabilities and toward phishing and infrastructure-level attacks.
CertiK said supply-chain breaches emerged as the most damaging threat, accounting for $1.45 billion in losses across just two incidents, including the $1.4 billion Bybit hack in February.
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