A method contains malware within a network resource. A blockchain system establishes a smart contract, on the blockchain system, for a network resource in a computer environment. The smart contract is for an action to be performed on the network resource if a malware is detected on the network resource. In response to malware being detected in the network resource, the blockchain system determines whether a consensus is reached by a plurality of computers on the blockchain system to implement the action to contain the malware based on the smart contract. In response to the consensus being reached by the plurality of computers, the blockchain system transmits, to the network resource, directions to implement the action on the network resource as specified by the smart contract.