October 2025 marked a sharp decline in cryptocurrency security incidents, with total losses from hacks and exploits falling to just $18.18 million across 15 reported events, a decrease of 85.7% compared to September’s $127.06 million total. This represents the lowest monthly loss tally seen in 2025, underscoring improvements in protocol protections and guardrail implementations by leading DeFi platforms.
Blockchain security firm PeckShield provided the monthly data, highlighting a significant drop in high-value breaches. The largest single incident occurred at Garden Finance on October 30, when attackers exploited a solver component vulnerability to drain over $10 million from the platform’s liquidity pools. The breach targeted only the solver’s contract module, leaving the core protocol intact, but raised concerns about complex component interdependencies in peer-to-peer financial systems.
Typus Finance suffered the second-largest exploit on October 15, losing approximately $3.4 million through an oracle manipulation attack. Attackers fed false price data into a contract’s oracle feed, generating artificial liquidity imbalances and enabling the extraction of funds. This incident prompted immediate security reviews and patching of oracle integration logic across multiple Sui-based DeFi projects.
Abracadabra experienced its third major exploit since 2024 on October 10 when a flaw in its liquidity management function allowed hackers to bypass solvency checks and borrow Magic Internet Money beyond collateral constraints. This breach resulted in a $1.8 million loss, which the protocol covered using its DAO treasury reserves, preventing user fund impact but spotlighting the importance of continuous code audits.
Despite the overall reduction in losses, security analysts warn that the decline may be temporary. State-backed threat actors and sophisticated hackers continue to evolve new attack vectors, including supply chain compromises and zero-day exploits in smart contract libraries. Industry experts recommend adopting multi-layer security frameworks, increasing bug bounty incentives, and enhancing cross-protocol transparency to mitigate emerging risks.
As DeFi platforms expand functionality and user bases grow, maintaining robust security postures remains critical. The October data serve as a positive interim milestone, but the fast-paced evolution of attack methodologies demands ongoing vigilance, timely patch deployment, and collaborative risk intelligence sharing across the crypto ecosystem.
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