DNS tunneling
A technique that hides other data inside DNS Domain Name System The internet's directory that links domain names to computer addresses. Full definition of DNS queries and answers. Because most networks let DNS traffic pass, malware Harmful software, often spread or controlled using domain names. Full definition of malware can use it to receive commands or to smuggle stolen data out. The traffic goes to a domain and a name server A server that holds a domain's DNS records and answers lookups. Full definition of name server run by the attacker. Blocking that domain does not reliably stop it, because attackers switch domains.
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- Security and abuse