Information Security in Cloud Based System

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A Review on Information Security in Cloud Based System during Covid-19
Article · May 2021
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Paramita Chatterjee
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Sandip Roy
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Brainwave: A Multidisciplinary Journal (ISSN: 2582-659X), Vol. 2, Special Issue No. 1, May 2021, pp. 60-69,
© Brainware University
A Review on Information Security in Cloud Based System during Covid-19
Paramita Chatterjee*#, Shantanu Mukherjee#, Rajesh Bose#, Sandip Roy#
# Department of Computational Science, Brainware University, India
*[email protected]
*Corresponding Author
Work from Home is the new trend in corporate working culture in this Covid-19 pandemic situation. Of course it is a
preventative measure to avoid the infection from the disease. Not only companies or corporate world but also education sectors
are hugely depending on “online study” as schools and colleges are closed during the pandemic period. Cloud computing is the
way that employees and students/teachers can work from home by using this. While using this cloud computing environment,
users are using their own private network to accomplish the work and hence the security and privacy factor is major challenges
to its user as this paradigm shift is involved with data protection, network security, virtualization security, application security
etc. To prevent these security measures lots of researches going on. In this paper authors have tried to take some preventive
solution, by going through different research paper and journals, analyzing the risk factor issues and minimize the risk factor.
The objective is to underline the principal risk factors in cloud environment and find out the technical solution to it from log in,
using the cloud to log out.
Keywords: information security, cloud security, pandemic threat, authentication, confidentiality, access control, integrity, cloud
I. Introduction
Currently the new working pattern in corporate and educational sector, which is work from home or
online study, wholly depending on cloud computing. During the pandemic situation, to avoid the infection
users are trying to fulfill their individual work from any places using private network. Same way students
or teachers are continuing their academics from their own places which are geographically different. All
are using or connected a common platform through cloud computing. This whole cloud based system
gives its user to access a huge and variety of database via internet. Now where every moment users are
dealing with huge data, obviously there comes a data storage centre and its subsequent management
system [2]. The total infrastructure consists of storage device, software, hardware interfaces and
communication network. This whole cloud service model involves three types of participants. Those are
Service provider, Programmers and end users. Service providers are maintaining and monitoring the
service i.e. the infrastructural parts are taken care by them. Programmers are responsible for delivering the
services from the infrastructure to end users. The end users are using the whole features of cloud service
through internet to accomplish their individual and corporate tasks from different geographical positions
[1]. Now as multiple users, whether it is corporate employees or students and teachers, are sharing the
same platform in cloud service, there comes the main concern which is security challenges. As the cloud
computing system depending on some technicalities, there are different security level protocols like Saas,
PaaS, IaaS, which is managing the security system effectively. When we are mentioning security
concerns, we are keeping in mind Data lost, Data Protection, Data theft, data malfunctioning, Data share

Brainwave: A Multidisciplinary Journal (ISSN: 2582-659X), Vol. 2, Special Issue No. 1, May 2021, pp. 60-69,
© Brainware University
etc [3]. In this paper we are trying to describe the common security issues faced by users and the possible
solution to minimize the risk factors by analyzing the different related journals and researches. The
following pandemic threats are generally recommended for measures in work from home culture or online
study culture as in both cases private or public network uses for accessing huge data from multiple source
which stored by multiple service provider.
Table I
II. Related Works
We have gone through related works and found that there are many research work going on Information
Security and Cloud Security to minimize the risk factors by suggesting optimum measures. Viewpoints of
few papers are as given below:
In [1] described Key aspects of cloud computing and its security and privacy. In [3] described the security
problem in Cloud computing and resolve with quantitative security risk assessment model known as
Multi-dimensional Mean Failure Cost (M
2FC).In paper [8] describes that the database security, privacy
and its ethical issues. In paper [9] we can see the authentication security related to SSO, multi factors,
username password, public key infrastructure etc. In paper [13] shows data security by digital signature
with RSA algorithm. In paper [15] author discussed about malware threats and privacy protection, its
detection process to resolve the privacy risk concern. The paper [16] explains the impact of Covid-19
pandemic situation on Cloud Computing. In paper [17] described about Fog Network its pre distribution,
revealing the TD-R. In paper [19] discussed about Mobile Cloud computing and its security threats like
malware behavior and its detection. In paper [20] we can see security transparency framework by
incorporating an implementation process. In paper [21] describes about security risk assessment and
systematically gain a distinction in multiple system resources and same security defense priority level. In
paper [22] shows a comprehensive survey of intrusion detection systems that use computational
intelligence in a mobile cloud environment. In paper [23] author proposes a secure data stream

Threats and other issues associated with Online Education/Work from home culture [16]
Data Privacy Internet Application Personal
Infected old
Data Storage

Brainwave: A Multidisciplinary Journal (ISSN: 2582-659X), Vol. 2, Special Issue No. 1, May 2021, pp. 60-69,
© Brainware University
outsourcing scheme with publicity verifiable integrity in cloud storage. In paper [24] author presented
secure and effective scheme for storage of shared dynamic data in unstructured cloud server by integrity
checking of third party service provider. In paper [25] introduces new technique of storing data in cloud
network by file type classification. In paper [27] describes and proposed a new threshold hybrid
encryption for integrity audit without trusting the data centre or data service provider.
III. Information Security
Information security is a bunch of measures taken to keep the data secured from unauthorized access or
alteration, in transmission or transition from one to another location as well as when it is getting stored.
Sharing information is like sharing knowledge and knowledge is a most valuable asset one can have. The
basic aspects or motto of information security are
The main intension of Information security is to give its user confidence that they can share their thoughts
or knowledge with having fear of any unwanted malpractice. It is protecting an organization from
unwanted interference in confidential business information from its beginning. In educational sector it is
so important to have right kind of information as per user need to get oneself updated about a particular
subject whether it is for student or teacher.
Now when users start using the cloud system, first thing should taken care of is confidentiality so that it
get encrypted, next thing should keep in mind that integrity so that the encrypted data remain same as it
was created, third thing should keep in mind that availability of data as an when it needed.
In information Security there are different categories that shown in Figure 1.
Information Security
Fig 1 [14]
Also following figure 2 is showing various risk or threats associated with information security that should
respond immediately to minimize the impact of unauthorized and unexpected outcome.

Cryptography Incident

Brainwave: A Multidisciplinary Journal (ISSN: 2582-659X), Vol. 2, Special Issue No. 1, May 2021, pp. 60-69,
© Brainware University
security Risk
and attacks
denial of
services Ransomware
IP Spoofing
To prevent the above risks there are various security measure technologies applied in information security
industry. They are
Security incidents and event management
Data loss prevention
Intrusion detection system
Intrusion prevention system
User behavior analytic
Blockchain Cybersecurity
Endpoint detection and response
Cloud security posture management
IV. Cloud Computing-Security Aspect
Security is one of the biggest concerns among the users as there is involvement of internet technology.
The reason behind is internet is having loophole that can create insecurity by hacking, crashing, accessing
the unauthorized details and there are specialized hackers available in worldwide. It is tuff to provide
exact solution to it but we can minimize the risk factors by
Providing entry level authentication security,
Carefully handled encrypted data,
Managing and storing massive amount of data.
Secure control over accessing the data.
As we have already mentioned about different level of security protocols in cloud system model, the
following figure 2 is describing the different cloud level services structure in cloud system [5].

Brainwave: A Multidisciplinary Journal (ISSN: 2582-659X), Vol. 2, Special Issue No. 1, May 2021, pp. 60-69,
© Brainware University
Fig.3 Cloud: Level of Service [5]
The following table II is describing different security attacks in cloud system delivery structure [5]

Software as a Service (SaaS) Platform as a Service (PaaS) Infrastructure as a Service
Data Security Data Location Web Service Attack
Network Security Privileged Access SLA attack
Data Integrity DDoS Attack
Data Segregation MITM Attack
Data Breaches DNS Attack

Table II
SaaS level security
: Service provider has to measure security as huge level of date need to handle from
different source. Users have to depend on the service provider as they are little confused about their
security. The types of risk are mentioned in above table II.
PaaS level security: In this level of security users faces risk at different software platform and access.
IaaS level security: In this level user faces mainly data storage related security. The different type of
security attacks in this level shown in the table II.

Brainwave: A Multidisciplinary Journal (ISSN: 2582-659X), Vol. 2, Special Issue No. 1, May 2021, pp. 60-69,
© Brainware University
The following table III will describe the different implementation model in cloud system [6], [7].From
this also we can assess the risk involved in each model.

Public Cloud Private Cloud Community Cloud Hybrid Cloud
Users can use this cloud
through internet which
is accessible for mass
Users are restricted as
per as accessibility is
concern, mainly used by
inter organizational
communication or
It is mainly managed by
more than one
organization for
particular secured
communication or
exchange of
information. Mixture of
Private, Public and
Hybrid model.
Combination of Private,
Public and Community
cloud mostly controlled
by third party service

Table III
The whole cloud system is the medium of exchanging or sharing information or sharing communication
in current technological era. And internet is the technology of the cloud system thorough which this
information shared by the end users.
A. Authentication: In cloud system, cloud is used to store data of users in a definite location which is
maintained by different service provider or third party [9]. Every time user need to properly access to the
said data through internet network. To have a proper access, authentication is the step to ensure the exact
login entity so that user can have secure access to his needed data [8].
The cloud authentication is having multiple natures as [9]:
Trusted Computing group
Single sign on(SSO)
Public key infrastructure
Multi factor
Username and Password
1. Physical biometrics
2. Behavioral biometrics
Some Techniques of Authentication [9]:
a. Data Access and Secure Storage (hidden policy method)
b. Access Control (Semantic-based) for needful security of Data
c. To improve Data access security using encryption ( location-based)
d. Based on Data classification secure model of cloud computing
e. Scalable authentication (User)
f. Digital Signature Authorization and Geo Detection
g. For private access approach of Trust management
h. Mechanism of 1-,2-,and 3- factor authentication

Brainwave: A Multidisciplinary Journal (ISSN: 2582-659X), Vol. 2, Special Issue No. 1, May 2021, pp. 60-69,
© Brainware University
B. Integration: Cloud Integration is a process of different technologies combines various applications,
systems, and other IT environments for sharing and storing data. After assembling these all the data and
integrated cloud service is ready to use by users from multiple devices through internet [10]. Two types of
integration is there they are Data Integration and Application Integration.
C. Confidentiality: This is an major part of security measure for user’s data protection in the cloud. It
sees whether the data been exactly encrypted and received without distortion. For example DELL provide
hardware and software based encryption as well as transparent file encryption [8, 11].
D. Access control and Authorization: Access control and authorization is one of the key security
measures so that the original and authentic user can access the data from cloud. It gives proper
specification or recognition to the users at the time of log in to network or internet to get the needed data
from cloud. The example of access control is McAfee which act as vendor to the cloud control and Oracle
Vault is technique by which apply authorization [8].
E. Database Security: Database Security enables the security measures to stored database in the cloud in
respect of malfunctioning, theft of data, loss of data during transaction and ethical practice on data use.
There are following types of data security against which we should take mitigation approach [7]:
Insecure Application Programming Interface (API)
Malicious Insider
Data loss
Atrocious use of cloud computing
Account and Traffic Hijacking
Shared technology unprotected
Unknown risk profile
F. Encryption: Data encryption is a process to transform a data to a another form or code and only
authorized users can access with private key or password [12].
G. Digital Signature: It is a mathematical Approach towards authentication of data user so that the other
end believes that it has send by actual author [13].
H. Internet of Thing (IoT): It is a combined process of interconnected physical object that connected
through internet to exchange data on wireless network. The example is Home security services, Biometric
etc [10].
I. Mobile network or Fog Network in Cloud computing: The fog network or mobile network or multi
network is a distributed network which is connected through a hardware device with remote service
provider. It is a specific area oriented network. The example is network through router [17, 18].
The following figure 4 is showing Fog Network

Brainwave: A Multidisciplinary Journal (ISSN: 2582-659X), Vol. 2, Special Issue No. 1, May 2021, pp. 60-69,
© Brainware University
Fig 4 Fog Network or Mobile Network [18]
In commercial or organizational level there are many service providers providing services at different
level of cloud security [14, 15]. Some of are as follows
Amazon Web Services (AWS) providing remote access to cloud service with data protection
Amazon EC2 is providing tailor made multilevel security
Microsoft Windows Azure is protecting confidentiality of user in cloud data access.
V. Cloud Computing Security during Pandemic-Conclusion
Novel corona virus is the reason for current pandemic situation in almost more than 120 nations all over
the world. People of the world hugely effected as Govt. declared lockdown to stop spreading the
infection. All the companies and corporate world adapted new working culture that is work from home.
Not only corporate world affected but also it got huge impact on educational sector too. Educational
sectors are also stated online classes or e learning to continue their course of studies [16]. Cloud
Computing (CC) platform is only way to accomplish the individual work done. With the increasing trend
of using CC the related technology is becoming complex to handle huge data source. And hence the
security risk is getting higher day by day which we have to minimize by proper detecting and providing
optimum solution in near future.
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