Computer Economics 2005 Malware Report put the cost of malware in 2005 at US$14.2 billion. Rootkits date back to the earliest years of the Internet, when crackers created cloaked variants of Unix commands to ensure their deeds on compromised systems would go undetected. Sony BMG developed a rootkit that surreptitiously installed extended copy protection (XCP) or MediaMax CD-3 software when music CDs were played on a PC. The ability of malware authors to hide their scripts from antivirus softwares capability of automatically detecting, protecting and eradicating most malware.”]
Source: https://www.csoonline.com/article/2122103/are-rootkits-the-next-big-threat-to-enterprises-.html