Multimedia IP-based communications, especially IPTV, streaming, and video
sharing services, play a key role in today's information-based society. These systems are
not only used to provide entertainment content, but can also be essential tools for everyday
information, news services, and even emergency communications. As an increasing part of
the citizens access information through these channels, their function, reliability, and
security have become critical. Multimedia IP networks can therefore now be classified as
critical infrastructure, not only from a technological but also from a social perspective. The
security risks of this technology are increased by the fact that these systems are based on
the same protocols as traditional data transmission IP networks, and therefore have similar
vulnerabilities and attack surfaces. In the case of a successful attack, the attacker may be
able to manipulate content and broadcast illegal or disinformation programs, which could
lead to mass deception, panic, or ideological influence. A similarly serious problem can
arise if the service becomes unavailable due to a cyberattack, as in a critical situation—
such as a natural disaster, war, or terrorist attack—the population will not be able to
access reliable information in a time-sensitive way. In this case, it is not just a simple
technical problem, but also a security risk at the public level, as the lack of reliable
information flow can lead to public insecurity and social instability. In such cases, the goal
is not only economic benefits, but also influencing society. The consequences of such
attacks can be particularly serious in countries where there is armed conflict or political
instability, as attackers can directly influence the ideology and decisions of the public by
manipulating multimedia channels. The security assessment of multimedia IP networks is
therefore no longer just an IT issue, but is also of key importance from a national security
and social security perspective. The aim of my research is to show why these networks can
be considered critical infrastructure and what dangers their vulnerability represents.
