Jamming refers to the intentional interference with the signal of a cryptocurrency network, particularly those using proof-of-work consensus mechanisms. In such cases, attackers try to disrupt communication between miners and nodes by overwhelming the network with excessive data or false transactions.This disruption can prevent legitimate transactions from being processed quickly, leading to delays and increased fees. Miners may struggle to find valid blocks, as their communication becomes congested or blocked. Jamming can also take the form of spamming attacks, where the network is flooded with low-value or fake transactions to consume resources. This not only reduces the efficiency of the network but can also impact user confidence and market stability.Overall, jamming harms the functionality and security of blockchain networks, posing a challenge for maintaining a steady and reliable system. Measures such as improving network protocols and enhancing capacity are often explored to mitigate the effects of jamming.