# Digital Cloud Environment: Present Challenges and Future Forecast
## 2 Related Works  
A deep analytical overview of the advanced telecommunication technologies and the top 10 cyber threats in the networks, including the attack mechanisms, vulnerability [8] and damage assessment, the object of the attacks, counter measures, modeling and prediction of cyber resistance, and the possibility of how to organize and coordinate the preventive actions, are provided in [9; 10].  
The article [11] is an overview of the relevant research on the key threats in cloud cyber security, such as data breaches or loss, account or service traffic hijacking, insecure interfaces and applications of IoT, distributed denial of service (DDoS), malicious insiders, the abuse of cloud services, insufficient due diligence, and other shared technology vulnerabilities. In addition, the authors of the article show the dependency of cyber threats with the security controls and compliance models based on the corresponding standards. The performed theoretical research is implemented as a practical system to identify threats and protecting actions.  
The article [12] is the analytical study of various factors, which influence the cyber security on particular cloud platforms. The following ways of possible violation are pointed out:  
* Confidentiality (C) of sensitive information
* Integrity (I) of the database (DB) information
* Availability (A) of cloud service Data (D)
* Availability of a Virtual (V) server as a whole  
For example, unauthorized access to a host would result in not only V violation but also in data manipulation (D violation) and discrediting of sensitive data as well (C violation). In another example, SQL injection to a DB, especially during data replication or backup (D violation), may cause an unacceptable data modification on the DB server side (I violation). In case of a very dangerous DDoS attack against a frontend server (both V and D violation), a cloud computing service will be entirely unavailable for internet users (A violation).  
In terms of the monitoring of cloud computing resources, an analytical overview of the top five worldwide popular solutions is presented in [7]. International scientific conferences on facing the widespread problem of big data computing are addressed in [2].  
Paper [13] proposes a recognition system in the IoT area to monitor real-time data, particularly on smartphones. Data fusion from multiple mobile sensors, including audio, Internet localization, etc., allows analysis of a person's life patterns. This is helpful for taking care of either children or older adults.  
Using predictive models in GCC monitoring systems is considered in [14; 15], including the well-known problem of Java memory leak and auto-remediation of Java-based services running on a virtualized cloud environment based on the 4R options--restart, reboot, redirect, redeploy.  
The novelty of this study is in the evaluation of VM capacity and cyber security when moving from a private corporative cloud (on premise) to a public one. The public cloud is much cheaper but less secure and, therefore, additional actions should be done to meet the cyber security policy.