DNS Tunneling is probably considered a relic of the early Internet days, back when the first firewalls were deployed and malware analysis was a little bit simpler than it is today. Though attackers have evolved, using steganography and encryption to communicate over HTTP, DNS Tunneling is not obsolete. In fact, modern malware actors continue to engage in DNS Tunneling, as evidenced by the CoinLoader infections, first reported by Avira. Even today, we see new uses of DNS Tunneling by hackers. In fact, our analysis of DNS Tunneling confirms threat actors are still using this technique, including state-sponsored actors and cybercriminals. […]
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