We can use time series concepts to detect early signs of malware compromise or a cyber attack against a system. In the earliest phase of the attack, the malware just sniffs through the system looking for vulnerabilities. The malware goes looking for loosely open ports and peripherals, thus sniffing information about the system. These early stages of cyber attack are very similar to what the military does when it surveys a new region, looking for enemy activities. This stage in a cyber attack is called the Reconnaissance.