Rootkit

Rootkits, like botnets, remotely access computers and do not get detected by the systems. Rootkits are enabled in such a fashion that the malware can be remotely executed by the malicious personnel. Roots access, modify, and delete files. They are used to steal information by staying concealed. Since rootkits are stealthy, they are extremely difficult to detect. Regular system updates are patches which are the only means to keep away from rootkits.