# Preventing the Cloud Networks through Semi-Supervised Clustering from Both Sides Attacks
## 1 Introduction  
Cloud computing is a robust physical or virtual infrastructure that exists on various devices and servers and allows users to access online data instead of using an internal hard drive [1]. The concept of cloud computing is linked to distributed systems [2] because, even in a distributed system, the data are stored in different locations (servers). These data can be retrieved from any place where these servers are available. Cloud computing is a technology used to access data globally [3]. Cloud computing has four service deployment models: public, private, community, and hybrid [4]. A public cloud is a free cloud managed by a third party and provides free services to users. Amazon Web Service (AWS), Oracle Cloud, and Microsoft Azure are the most common public cloud providers. A private cloud is designed for a specific organization and accessible within that organization. The hybrid cloud is the third type of cloud computing, featuring the best features of public and private clouds. If an organization wants to use both public and private clouds, it uses the hybrid cloud. Community cloud is the fourth type of cloud computing. A set of organizations can access the systems and services through the community cloud. By 2021, the rate of cloud computing will remain something like this [5]:* 73% of organizations turned to the private cloud;
* 92% of organizations turned to the public cloud;
* 69% of organizations turned to a hybrid cloud. On average, 5 to 30 percent of companies have moved their organizations to the cloud [6]. Cloud computing has increased 2 to 3 times since 2013 and provides more than 1400 services [7]. The rapid advancement of internet technology has brought many conveniences in life, but security issues have increased rapidly [8,9]. According to the survey of 2021, the ratio of Ransomware malware attacks increased to 52.5 million [10], while Distributed Denial of Service (DDoS) attacks increased from 1392 per day to 2043 per day [11]. As the number of services in cloud computing increases, so does the number of attacks in the cloud. Different attackers have designed various algorithms to break cloud security and provide some algorithms to end-users in free applications. These applications can contain bugs and intrusions, allowing attackers to attack cloud servers quickly [12]. Many data centers have external security, while attacks on data centers are primarily from the inside [13]. This is because security mechanisms can detect external attacks and prevent data from being attacked, but internal side attacks can be challenging to detect. The growth rate of malware attacks is shown in Table 1.  
Despite implementing various security mechanisms on the internal system of cloud computing, information leakage could not be prevented, and internal side attacks could not be reduced [14]. Network security is essential because the Internet is so widespread [15]. Many researchers have developed many algorithms that prevent cloud servers from attacks and designed a set of rules and policies that can be applied logically and physically to prevent the cloud from intrusions. So far, only a few solutions are available that are fully implemented on the cloud server [16]. \begin{table}
\begin{tabular}{c c c} \hline _SR\#_ & **INTRISION** & **GROWTH RATE** \\ \hline
1 & Intrusion delivered by an email & 92\% \\
2 & Increased malware attacks in mobile by applications & 54\% \\
3 & Attacks by third-party application & 99.99\% \\
4 & Increased Trojan Horse attacks in applications & 45\% \\
5 & Increased attacks rate in Mac OS & 16.5\% \\
6 & Malware development rate decrease in Windows OS & 11.6\% \\
7 & Ransomware & 70\% \\
8 & Backdoor & 79\% \\
9 & Websites infected per week by malwares & 18 million \\
10 & Businesses affected by malware per week & 34\% \\
11 & Financial Institute & 90\% \\ \hline \end{tabular} The growth rate of malware attacks increases by 20 to 30 times yearly [17], as shown in Figure 1. Overall, malware infections have been increasing over the last ten years.  
\end{table}