Zero Day Exploit – A recent flaw discovered, that is leveraged by a hacker or “threat actor” before a patch or preventative measure can be made available by the manufacturer of the system or software. The bugs or flaws are unknown, go on undetected, and can continue to be exploited for many weeks, months or potentially years. Some security researchers will responsibly report such flaws to the company responsible, giving them enough lead time to pinpoint and resolve any such issues with software updates before going public with the information. Keep up with system patches, and make sure to look for network and traffic anomalies in your security management consoles.