Malwareare software programs that are
designed especially for damaging the system. These programs are malicious codes
which include worms, viruses and Trojan horse. These are destructive tool that
spreads worms which is transmittedthough emails and instant messages, web
sites and through virus infected files. It seeks and exploits the
vulnerabilities of the system. Malware are created making profit though forced
advertisements (adware), stealing sensitive information stealing (spyware),
extort money (ransomware). These factors make the PC more vulnerable to malware
attacks including defects in computer system.