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M. Bakro et al.

Fig. 3 Security, privacy, and intertwined problems in cloud computing [9]

2.3

Definition of Security and Privacy

Security and privacy can be defined according to the following [8]: “Security isn’t to

tamper with a user’s items that adversely influence his activities, Privacy is to leave

a user’s details to himself only”. It can be said that privacy is the process of hiding

an individual’s information and isolating it from others in a dynamic, and selective

manner. As for security, it is keeping the information safe and resisting any potential

danger or unwanted forced change from others.

Figure 3 shows us security and privacy problems, which focus mostly on informa-

tion security and loss, and this is what has been worked on in our research through

the use of cryptographic algorithms to maintain information security, in addition to

using decentralized blockchain technology to distribute data to more than one server

in the event of any attack or sabotage.

2.4

Definition of Cloud Security

Cloud Security is the data storage/availability of services for users across the cloud

platforms via the Internet in a secure and protected against penetration (whether this

penetration is for the purpose of deletion or leakage or other), the security of the

cloud is a form of cyber-security and consists of a set of controls and technologies

that sharing together to protect the infrastructure and cloud data, Through Fig. 4,

it has been represented the problems and classifications of cloud security, which

makes it easy to understand attacks, evaluate them, and suggest solutions to them. It

also observed from Fig. 4. that to achieve security requires the provision of several

things: (such as firewalls, encryption, obfuscation, VPNs, etc.), in addition to that the

most important factor in data protection insurance is the nature of the relationship