In the presence of security countermeasures, a malware designed for data exfiltration must
use a covert channel to achieve its goal. The Domain Name System (DNS) protocol is a …

Many enterprises are under threat of targeted attacks aiming at data exfiltration. To launch
such attacks, in recent years, attackers with their malware have exploited a covert channel …

Enterprise networks constantly face the threat of valuable and sensitive data being stolen by
cyber-attackers. Sophisticated attackers are increasingly exploiting the Domain Name …

Abstract Domain Name System (DNS) tunnels, established between the controlled host and
master server disguised as the authoritative domain name server, can be used as a secret …

Botmasters are known to use different protocols to hide their activities. Throughout the past
few years, several protocols have been abused, and recently Domain Name System (DNS) …

The traditional design principle for Internet protocols indicates:" Be strict when sending and
tolerant when receiving"[RFC1958], and DNS is no exception to this. The transparency of …

DNS (Domain Name System) tunnels can provide high-bandwidth covert channels that pose
a significant risk to sensitive information inside the company networks. Sensitive data are …

DNS is often used by attackers as a covert channel for data exfiltration, also known as DNS
tunneling. Since the plaintext DNS lookup leads to privacy issues, DNS over HTTPS (DoH) …

Enterprise networks constantly face the threat of valuable and sensitive data being stolen by
cyber-attackers. Sophisticated attackers are increasingly exploiting the Domain Name …

The Domain Name System (DNS) protocol has been in use for over thirty years. As the
primary method of resolving domain names to Internet Protocol (IP) addresses, it is a …