A virus is a piece of malicious code that interferes with the normal functioning of a system and damages the way it operates. It is self-replicating in nature and copies itself or attaches itself to other legitimate programs and runs when that program runs.
Cyber threats are the possible dangers associated with electronic data available on the computer systems, internet or other network devices that might breach security. Some of the common cyber threats are the virus, phishing, SQL injection, etc.
Cyber Security is the set of processes designed to protect the computer, computer networks and the data from unauthorized access, vulnerabilities and attacks such as hacking, phishing, spamming, IoT Malware, spoofing, etc.