Today's advancements in wireless communication technologies have resulted in a
tremendous volume of data being generated. Most of our information is part of a widespread …

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 …

Computer networks have fallen easy prey to cyber attacks in the ever-evolving internet
services. Domain Name System (DNS) has also not remained untouched with these …

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 …

DNS is a kind of basic network protocol that is rarely blocked by firewalls; therefore, it is used
to build covert channels. Malicious DNS covert channels play an important role in data …

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

DNS tunneling is a method used by malicious users who intend to bypass the firewall to
send or receive commands and data. This has a significant impact on revealing or releasing …

DNS tunnel is a technology used to bypass firewalls for data exfiltration. It takes advantage
of the characteristic of firewalls that always allow DNS traffic pass. Most of the studies have …

Nowadays, DNS channel attacks on mobile devices have become a challenging threat.
Attackers usually attack mobile devices and steal information with the help of DNS channel …

Abstract Virtual Private Network (VPN) can provide a concealed transmission channel for
communication and protect the privacy of users. However, it also brings hidden dangers to …