Web3 Security Losses Rose in 2025 as Attackers Shift Toward Fewer, Larger Incidents

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Web3 security losses increased by 37% in 2025, primarily due to supply chain and phishing attacks, despite fewer incidents overall. Ethereum and cross-chain platforms were the main targets for these high-impact exploits, indicating a shift in attacker strategy amidst increasing on-chain activity and positive market conditions.
- 2025 losses rose 37% despite fewer incidents, driven by a small number of high-impact exploits.
- Supply chain and phishing attacks accounted for the majority of Web3 security losses.
- Ethereum and cross-chain platforms remained primary targets for large-scale attacks.
The Web3 network experienced higher security losses in 2025, despite a decline in the number of incidents compared to the previous year, according to data from CertiK’s Skynet Hack3D security report. The findings reveal a growing threat scenario, characterized by limited, high-impact attacks rather than widespread, low-value exploits, reflecting a shift in attacker strategy as on-chain activity rebounded.
Web3 activity accelerated in 2025 due to positive market sentiment, renewed liquidity, and a more accommodative policy environment in the United States. Decentralized applications expanded across pay…
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