ROMAD processes billions of the system calls in real time. It builds up the behavioral profiles of every program running on the PC. It compares the behavioral profiles of the programs with its Malware Genome database.Yes, it will scan your pc. You will be protected from malicious programs that will threaten your security. Also Romad checks your apps. But it does not check your emails or anything that is web related.  Firstly,  the blockchain is used to store the data about the malware attacks repelled. And secondly, it's used as a foundation for the passive data exchange that is based on the smart-contracts and zero-knowledge proof.