Definition ∞ On-chain C2 refers to Command and Control infrastructure for malicious operations that utilize a blockchain network for communication. Instead of traditional web servers, attackers use transactions or smart contract interactions to send commands to compromised systems. This method offers a decentralized and often more resilient communication channel for illicit activities. It presents unique challenges for detection and mitigation.
Context ∞ News reports on cybersecurity in the crypto space sometimes discuss on-chain C2 as an advanced technique employed by sophisticated threat actors. These reports highlight how malicious software can receive instructions or exfiltrate data by interacting with specific blockchain addresses or smart contracts. The transparency of public blockchains can paradoxically aid forensic analysis, yet the decentralized nature makes takedowns difficult. Security firms monitor such activities to identify emerging threats to digital asset ecosystems.
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