This paper considers methods for software code protection from modifying and illegal distribution. Including methods based on digital watermarks, and zero digital signs. One of the promising methods of program code protection is the KeySplitWatermark method. The paper considers it and the possibility of modernization.

Modern security tools can largely resist standard attack vectors, but they do not protect against little-known attacks, which may not be protected against. The solution to this problem can be the introduction of hidden traps into the complex to protect against attacks. This technology is a tool that can be configured to solve a wide range of information security problems in an enterprise. A honeypot can complement the existing security system of an enterprise and be a means of collecting important information for the security system. The paper discusses the algorithms for the operation of such systems, and also proposes a system for collecting and processing information from various honeypots, methods of tuning and testing.

The possibility of training neural networks to decrypt encrypted messages using plaintext-ciphertext pairs with an unknown secret key is investigated. An experimental simple 8-bit substitution-permutation cipher is considered. The neural network is a three-layer perceptron with forward propagation. The required volume of the training sample, the probability of an error after training, and the dependence of these parameters on the number of rounds of the encryption transformation are analyzed. One of the main results is conclusion that the considered model did not show an explicit dependence of the complexity of cryptanalysis using neural networks on the number of rounds in the encryption transformation. Thus the question of the optimality of the chosen neural networks architecture for the selected cipher remained open.

The analysis of literature indicates no serious research of call center, which would take into account the impact of interactive voice response (IVR), but at the same time, experience shows that its introduction significantly affects the operational costs of the system owner.That is why the development of adequate models of functioning call center is quite urgent task when designing for leading to the improvement of operation and, therefore, reduces the cash costs of their operation.The work was performed statistical analysis, and the data on the work of the Call-center, a queuing system. IVR system performance was investigated on the developed simulation model in the system GPSS World, experimental studies of developed methods and algorithms are conducted.Number of calls that were serviced, the percentage of lost calls of operators, histogram average waiting time in the queue at different values of the number of working operators, histogram queue length are obtained. They allow predicting the workload of the Call-center, and calculating based on the number of operators required.The research results show that changing the length of the IVR only a few seconds significantly affects the quality parameters of call-center such as the percentage of lost or rejected calls, average wait time, average queue length for operators. With increasing served IVR calls that left behind this system, the average call time in the queue and the average queue length to operators significantly reduced, and the simulation model allows tracking statistics module.Developed and statistical simulation models can be used in the design and operation of call-centers. In the future, it is proposed researching models on the more complex models of call distribution than normal, or exponential.

Для кількісної оцінки переваги Call-центру, що працює з IVR, розроблена імітаційна модель у системі GPSS. Програма реалізована у вигляді двофазної моделі системи масового обслуговування (СМО). Модель на відміну від аналогів дозволяє одержати залежності числа обслужених викликів і відсоток загублених викликів від кількості операторів. Досліджений вплив числа викликів, що покинули Call-центр після прослуховування відповіді IVR, на показники якості обслуговування.

Запропонована структурна схема та описані функції автоматизованої системи випробувань засобів захисту інформації. Описана математична модель для оцінювання ефективності функціонування системи інформаційної безпеки