1970s: Rootkits
Came out of the UNIX era in the 70’s but the most famous episode was in 2005 it was discovered that Sony BMG Music Entertainment had used rootkit techniques to disguise digital rights management software that installed itself on consumers' computers when they played a Sony CD.
Rootkits are software that enables continuous, privileged access to a computer while actively hiding its presence from administrators. Typically, an attacker installs a rootkit on a com