Expert Tip - What is DNS cache poisoning?

DNS cache poisoning is the act of entering false information into a DNS cache, so that DNS queries return an incorrect response and users are directed to the wrong websites. DNS cache poisoning is also known as ‘DNS spoofing.’ IP addresses are the ‘room numbers’ of the Internet, enabling web traffic to arrive in the right places. DNS resolver caches are the ‘campus directory,’ and when they store faulty information, traffic goes to the wrong places until the cached information is corrected. Read more on the Cloudflare Learning Center.

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