The human factor is a source of errors that arises not only in airports activities but also in the process of internal and external communication. The hybrid campaign consists of a spectrum of classic tools, called DIMEFIL, which affect the dimensions of power in seven areas (diplomacy / politics, information, armed forces, economics, finance, intelligence, public order and the rule of law) .
Hybrid threats are a complex and multidimensional threat caused by the convergence and interconnection of various elements of social life . The hybrid threat aim is to weaken mutual ties and conduct different types of espionage.
Espionage can be part of the attack preparation, mostly in a latent form, or to get information security technological progress. Determining the level of cyber security requires investigating phenomena and activities that could pose real or potential threats to the internal and external communications of critical infrastructure [3, 4].
Security of critical infrastructure is important not only in aviation but also in other industries such as metallurgy. This is mainly due to environmental protection and the possibility of an ecological disaster . Modern society is not only connected by computer networks, but we are increasingly dependent on technical infrastructure.
The interconnectedness of the infrastructure systems creates a dependency where the failure of one infrastructure subject affects the functionality of other infrastructure elements . Mutual multilevel infrastructure systems interconnection is a modern society development basic prerequisite. Assessing the level of infrastructure vulnerability is directed in two ways, technical and human failure.
The authors analyzed aerospace technical infrastructure inter-connectivity and an internal communication vulnerability. The authors analyzed the elements of an inter-connectivity level protection of aerospace technical infrastructure and internal communication vulnerability.
The authors concluded that by reducing the disconnection point’s number and splitting internal ways, they are a possible solution to cut the penetration possibility into the internal network of air transport entities.
The results of the research show that interdependent systems should have internal systems divided into open systems for outdoor and indoor access, with no external access. Protection against intrusion is the first phase and requires the firewalls and antivirus programs implementation in the critical infrastructure network.
The monitoring systems implementation is the most suitable solution to protect against data leaks, which is the most risky area, by employees and visitors. An aircraft monitoring system gains, monitors, process, and records aircraft system condition (characteristics) and failures .
The authors believe that the ongoing use of penetration tests  based on a simulated hacker attack is a proper method of verifying the level of cyber security.
In the horizon of 2030, the Ministry of Defense of the Czech Republic set out significant changes, supported not only by an anticipated budget increase, but also by an efficient process of public procurement, and an increase in the number of members of the armed forces to respond to current and future threats.
In 2019, the Czech Air Force capabilities the development was ensured by the acquisition of twelve helicopters, eight MADR mobile 3D radars, and two new CASA aircraft.
An important year for the Air Force development is the year 2027, when the lease agreement for the supersonic aircraft JAS 39, will be terminated.
The defense budgets of the Member States of the European Union are rising due to the current economic situation and change in the level of security. The goal of approaching two percent of gross domestic product will probably be reached within one decade. However, the positive trend in the development of the defense budget w ill not allow small states to acquire the exact numbers of military techniques in the numbers that imply a continuous increase the capacity of national armies. Pooling and sharing is one of the approaches that will allow the required capabilities of national armies to benefit the European Union, or the North Atlantic Alliance. Deepening co-operation in the field of acquisitions will put pressure on coordination of activities, alignment of legislation and, above all, overcoming national and common. Obviously, given the current combat experience, the issue of armed forces has already been partly solved and pooling & sharing implementation is a political issue.