Cache poisoning is a technique by which requesting Internet users are led to an Internet address from which malware is transmitted.
The purpose of cache poisoning is to infiltrate spyware and spy out websites and access authorizations.
Since cache poisoning is often used in Domain Name Systems (DNS), it is also referred to as DNS cache poisoning. In this method, a valid Internet address is replaced with a spoofed one. User queries are deliberately directed to a spoofed website in order to install spyware or other malware through it.