Computer Systems Security: A Review

Computer Systems Security ABSTRACT 3 INTRODUCTION 4 LITERATURE REVIEW5 TASK 6 Impact on the Normal Man 8 Questioners 9 Importance of Risk analysis in the primary data-12 Identifying the different applicationsupporttocryptographyand encryption with primary data- 14 Propose An App for Normal Man /Screenshot of Applications 15 Create Risk chart with probability and mitigation plan with the help of primary data 18 Legal, Social and Ethical issues: 23 CONCLUSION 23 REFERENCES 24 ABSTRACT Computer system security is

Computer Systems Security

Table of Contents
ABSTRACT.....................................................................................................................................3
INTRODUCTION...........................................................................................................................4
LITERATURE REVIEW................................................................................................................5
TASK...............................................................................................................................................6
Impact on the Normal Man ........................................................................................................8
Questioners..................................................................................................................................9
Importance of Risk analysis in the primary data-.....................................................................12
Identifying the different application support to cryptography and encryption with primary
data- ..........................................................................................................................................14
Propose An App for Normal Man /Screenshot of Applications...............................................15
Create Risk chart with probability and mitigation plan with the help of primary data.............18
Legal, Social and Ethical issues:...............................................................................................23
CONCLUSION..............................................................................................................................23
REFERENCES..............................................................................................................................24

ABSTRACT
Computer system security is a process that help for providing the safety and security in the smart
phones, tablets and other devices. Information technology is a leading field to expand the
business all over the world. It is beneficial for user to check the security options to manage the
entire processing and functionality of smartphone. Computer security is the most challenging
part of organization to handle the complication in the business operations and functions.
Computer system used the different techniques such as wireless network, smart phones, Wi-Fi
etc. cryptography techniques are beneficial for used the encryption and decryption algorithm of
providing the safety and privacy in the computer system.

INTRODUCTION
Computer system security is the part of protection and safety for hardware system to the
thefts and hackers. It is required for manage the services because it can manage the entire
functionality of the computer system. Information technology is the fastest growing field to
provide the best services to the customers in marketplace. Computer security is the most
challenging part of organization to handle the complication in the business operations and
functions. Computer system used the different techniques such as wireless network, smart
phones, Wi-Fi etc. these devices are basically used for the purpose of communication from one
node to another (Conti and et.al., 2018). At the time of sharing, the hacker can attack the
computer system and can be damage the information or data that's why, it is necessary for
organization always maintain their security aspects in proper manner. In this report, It will
discuss about the different conceptual security risk that could recognized at the time of data
processing. There are different type of risk generated in the information technology environment
therefore, it is necessary to maintain their services in proper manner.
Cryptography is the technique which used for the purpose of network security therefore,
it can decode the data from one node to another by using this technique where the hacker can not
easily damage the data in the computers. There are different approaches describe in the report
and also discuss its applications. Sometimes, threats and unwanted software impacts on the
business operations and functions that's why, it is important to manage their security aspets in the
computer system. (Ross, McEvilley and Oren, 2018). This report will discuss about the smart
phones and tablet which is suitable for the normal person in the terms of security aspects. In this
way, it can easily understand the need and requirement of technology in our day to day life.
Smartphones is a type of device that is applicable for data transmission and this device used
some terminology and technologies, issues etc. Smartphones are most preferable as compare to
tablets because smartphone provide the calling facilities and services to the customer (Thota and
et.al., 2018). Most of the organization provide their own platform to share the information to the
customer. In this way, customer can easily access the information by using computer system
that's why, it is necessary for protecting the hardware system because unnecessary threats and
virus affects the entire computer system. There are some threats generated which discuss in this
report such as malware, viruses, phishing, spam etc. These are the important threats that affecting
the entire computer system. It makes sure that devices used in the computer system must used

the techniques like encryption, TCP and UDP, Decryption and IP etc (White, Fisch and Pooch,
2017). These are essential technology for protecting data or hardware system against the theft
and hackers. Encryption and decryption are the main component of computer security because
many organization used this technique to provide the safety and security in their hardware
systems(Conti and et.al., 2018). Computer security is the main part of organization that allows
securing the business operations and also protected the information and details on the specific
computer system that's why, security is the important aspects to manage and control the entire
processing of system. Security is help for removing all the threats in the system and keep protect
the hardware system. This type of security is useful for provide the integrity, availability and
confidentiality for the component in the entire system.
LITERATURE REVIEW
According to the author, A New smart phone or tablet security is the main aspects of each
and every people. They always try to secure their data and information because there are many
theft damage the functionality of smart phone and can be lost the data. First of all, person can
understand the functionality and operations of smart phones and used the different application to
protect their data in effective ways. These are the security features that applied in the smart
phones to protect their data and information effectively and efficiently (Abdo and et.al., 2018).
As per author, Modern Technology is to be considered as the main part of business that
applicable in the tablets and new phones to provide the better services to user those who used the
smart phones. The information accessibility is easy for each and every people that store the
mobile data in the gadget collection that's why, it protects all information in proper manner.
According to author, All the service that used the specific authentication security to
protect their transaction and data. It is easier process to check and enable the security features.
Once enabled even some people easily access the password.
According to author, Computer security terminology, technologies and issues that
applicable in the smart phones. It is required for each and every hardware system to manage the
entire functionality of mobile phones. Computer security is the main component in the
smartphones and other technology because it provides the full of security and safety in the entire
functionality and operations. Sometimes, Many people install the various application that help
for providing the best quality of services related the security aspects (Liu and et.al., 2018). It can
be used the different technology applicable that only provide the security in their hardware and

software system. This technology is running automatically remove all the unwanted software and
threats in the computer system. It is necessary for people to secure their computer system
because in most of time, the important and personal data store in the system that used for manage
in the proper manner.
TASK
Common Risk on the overall security system of computers-
There are different types of common risk generated in the computer system effectively and
efficiently.
 Hackers- Hacker is basically person those who tries to crack the password of computer
system and also exploits the hardware for particular reasons. It is terminology that used in
the computer security and damage the personal information and company data. Hacker
will use the different software that access their entire processing in quickly. It is the most
common technique to lost the data anywhere.
 Unauthorized access- unauthorized access is the happen when someone can use the
server to access the details of particular website. In this way, it is also accessed the
sensitive data of another person. An organization is store the details of customers in their
official database (Papernot and et.al., 2018). In this way, An authorized person easily
access the personal information of client such as transaction details, account number, card
details etc. It affects the entire processing of organization and many times, the firms face
loss and challenges issues.
 Threats- It is the most common aspects of computer security that generated at any time
in the system. It mainly causes the serious damage in the hard ware that impact on the
overall operations and functions. Sometimes, threats may be affect or not because it
depends on the quality and accessibility. This is the important for people to always
protect their smartphone, tablet and PC to secure through threats. It is based on the action
and event that might happen in the computer system and it is also comprises the security
(Thota and et.al., 2018).
 Vulnerability- It is usually based on the weakness that help to exploit by the threats in
the entire system such as attackers, This is unauthorized persona that perform in the
different action in the other devices such as computer system, Smartphones and tablets
etc. The attacker will use the one tool or technique to connect with the system weakness

and damage their processing system (Roman, Lopez and Mambo, 2018). Security risk is
the classified on the basis of vulnerability because this concept is applicable in the system
that generate more risk on system. In this way, it directly connects with the weakness and
damage the entire process.
 Attack- It is the assault on the security system where the person can be delivered the
unwanted software and text message to the accounts. In this way, the person can open the
software that impact on the computer system. This is the way to attack the hardware and
other PC, smart phones and tablet etc. It is required for every user to check in properly.
Afterwards, install the app in the smartphone because there are various types of fake
application available in the marketplace. The only reason to affect the device of hardware
to the people. In this way, the attacker access all the personal information of users in
quick manner.
 Antivirus and Anti-malware- This is the software that help for providing the security
and operates the operating system of devices for preventing through the malicious
software. This is the important for user to always install the antivirus in the smart phones
because it can provide the security features and aspects to automatically control and
remove the unwanted software in the systems (Ross, McEvilley and Oren, 2018).
 Social engineering- It is based on the technique where the hacker can access and use the
stolen data of another person for the purpose of psychological manipulations. It is the
based on the large number of malicious activities that happen by the human interactions.
Sometimes, the people use the psychological manipulation and trick makes mistake or
giving away the personal and sensitive information. The attack can happen into more
steps that investigate to gather all necessary information therefore, Attacker moves to
gain the trust of user and provide the stimulation action that break all the security aspects
and practices like revealing and accessing all information and granting to the critical
resources.
 Virus- It is a type of malicious software that enter in the smartphone, tablets and
Computer system with the help of installation, unwanted application etc. These are
different sources that help for enter in the system. In this way, The entire system of
smartphone is slower. It also impacts on the overall efficiency and data processing. The
main purpose of malicious software to damage the smart phone operations and slow

down. It is required for user to use the security features that help for protecting the whole
system in effective manner (Thota and et.al., 2018).
Impact on the Normal Man
Normal Man cannot operate their smart phones and computer system proper manner
because these security issues are affecting the entire processing of system. In this way, attacker
easily hack their entire data and information related the transaction and account numbers etc. In
this Normal Man can use the different methods for securing their smartphone and table by using
the security features in effective manner.
Put a strong passcode- This is the initial and easy step to protect their phone through the
viruses and threats. In new phone, there are various types of features available in the phone that
set a passcode to lock the phone. It is the security option that applicable the different options
such as fingerprint, image recognition, Number-code etc. this features is added in the phone to
protect and secure in effective manner (Alali and et.al., 2018). Many new smartphone and tablet
offers different lock pattern and without the figure print, it cannot be possible to unlock the cell
phones.
Lock your app- Many organizations always remember to the security issue so that they
launch a smart phones which offers different features. In this way, it can be individually lock
installed application with the help of passcode and scan fingerprint. This features can extra
security layer to protect their data and important content especially when you hold the phone and
other person to show something. It also useful for person to install the features and applied the
smartphones such as App-lock etc.
Use two factor authentication- Many people can ignore the security features that face
many problems and hassle at every time that's why, it is required for user to use the two factor
authentication that help for provide the security with the help of authenticate with the passcode
(Conti and et.al., 2018). It can generate the unique authenticated code for particular application
such as One time password etc. this type of security feature offered by different services such as
Facebook, twitter, Instagram, google, Amazon, Snap-chat, PayPal etc.
Install security applications- A smart phone is based on the susceptible to data theft in
the computer system. It is important to get smart phones to install the security application that
manage the entire processing of system (Lee and et.al., 2018). There are various type of security
application available in the organization such as McAfee, Trend Micro, Avast, Norton etc. This

feature is automatically scan the smart phone and remove all unwanted threats and software in
the system.
Update phone and app regularly- This is the simplest procedure that each and every
people follows this to remove the unwanted temporary threats that affects the entire functionality
of smartphones. Google provide the notification to update and patch the phone regularly. It
always recommends to keep check all the system updates in proper manner. It is based on the
regular basis.
Questioners
Q1. Do you think people use the smart phones and computer system??
Yes
No
Not sure
Q 2. Do you think smart phone is useful device for people??
Yes
No
Not Sure
Q 3. Do you think people use the smartphone devices for Instagram and whatsapp??
yes
No
Not sure
Q 4.What is hacking??
Yes
No
Not sure
Q 5. Do you know comparison between the 4G and Wi-Fi ??
Yes
No
Not sure
Q.6 Do you Know what is anti virus protect in the smart phones??
Yes
No

Not sure
Q 7. Do yo upgrade the Smart phones applications??
Yes
No
Not sure
Q 1 Do you think people use the smart phones and computer system?? Frequency
Yes 2
No 5
Not sure 4
Total 11
Q 2. Do you think smart phone is useful device for people?? Frequency
Yes 4
No 8
Not sure 3
Total 15
Q 3. Do you think people use the smartphone devices for Instagram and
whatsapp??
Frequency
Yes 6
No 6
Not sure 4

Total 16
Q 4.What is hacking?? Frequency
Yes 1
No 3
Not sure 6
Total 10
Q 5. Do you know comparison between the 4G and Wi-Fi ?? Frequency
Yes 5
No 2
Not sure 2
Total 9
Q 6. Do you Know what is anti virus protect in the smart phones?? Frequency
Yes 5
No 7
Not sure 2
Total 14
Q 7. Do yo upgrade the Smart phones applications?? Frequency

Yes 5
No 9
Not sure 2
Total 16

According to the questions, it can be identified the different views of people in the
marketplace and how they have knowledge about the security aspects related the smartphones
and computer system. As per survey, it easily identifies that there are many people use the smart
phone's approximately two people used the smart phones and 5 people cannot used.
Importance of Risk analysis in the primary data-
Risk analysis is generally process that help for analysing and identifying the issue or
problem that negatively impact on the overall functionality of computer systems and other
devices such as mobile phones, tablets many more. User must understand that risk can be
associated by using the different software in the computer system because these type of software
generating the virus and malware that impact on the entire operating system of computer. It is
important for user to choose the correct software. There are different technology help for
analysing the risk in the hardware system at their primary data. Computer and hardware security
is a necessary for user to use the efficient technology that providing the best quality of
technology. These are different technology to easily identify the risk in the computer system
and smart phones. It can be detect all the primary data which is not good for the system that
easily remove. These are very fast technique to minimizing the risk in the computer system and
other devices.
Applications- This is an essential technology that help for removing all threats and
viruses in the system. This application is installed in the computer system and it performs
different functions to automatic detect the issues and problem. This is the best technology where
all the people can used them. It is easier for smart phones and other tablet to scan the issues and
detect in quick manner. Many people use this technology to maintain the security and safety.
Domain – It is basically a part of network that connect all the data of user and
organization in particular domain. There are different number of computers, devices and printer
interconnected to each other. It can be established as a whole network in proper manner. For
Example- computer is a part of domain at the work place because it is connected to the devices
of network. This technology is useful for providing the best security and safety in effective ways.
Cloud Computing- cloud computing is the best technology that allows for accessing the
information and file with the help of internet. This technology provides the better quality of
services to the user whereas people uses access the details anywhere because all information

already install in the cloud (Saini and et.al., 2018). It is provided the best facilities to secure their
large amount of data and remotely access the server request.
Social networking- It is generally base on the network services that provide the online
platform and tool which user can use the social network to connect with another people. This is
the best for communication between the people therefore, they can share the information from
one network to another by using smart phones and computer system. This technology is useful
for distributing the information across the computer networks (Thota and et.al., 2018). It
incorporates with wide range of new details and interaction tool that operates the smart phones,
computer system etc.
Telecommunication- Communication is the best technology that provide the facilities
and services to transmit the signals from one network to another. It is based on the signals for
transmitting the messages, image, file etc. It is better way to exchange the information among the
participants that includes technology (Thota and et.al., 2018). This communication provides the
different security which required in the system because sometimes, data can be lost at the time of
transmitting. Attacker easily loss the sensitive information. In this technology, it can be used the
specific features that manage the entire signals and messages in effective manner.
Cryptography and Encryption-
Encryption – Encryption is technique that translating the plain text or message into the
code format. This is security purpose where hackers easily broken the encryption process. It is
the most effective method by using the symmetric key in both encryption s well as decryption
process(Willison, Warkentin and Johnston, 2018). In the security purpose, the main objective of
encryption algorithm is difficult for converting the signals into decryption without using the
symmetric key.
Decryption – Decryption is reversible process that help for converting the signals into
the encryption form. This process can happen by manually and automatically in the network.
According to the aspects of security and risk in the computer system encryption and
decryption algorithm applicable in the term of security in primary data because Broken
cryptography is the common security issue and problem arise because many developer can used
the weak encryption algorithm that easily attack the hackers the data. It is required for developer
to implement the strong encryption technique that provide the best safety and security to their
hardware devices. Encryption algorithm is useful for increase the speed of processing and also

manage the app development effectively and efficiently(Willison, Warkentin and Johnston,
2018). Many motivated hacker easily crack the password to gain the access of particular device.
Many organizations used the high secure algorithm that has unlimited possibilities to protect
their data and information in effective ways. They also used the high quality of code to manage
and protect their password and mail id easily.
Identifying the different application support to cryptography and encryption with primary data-
For controlling and managing the data that used the encrypt data which help for reduce
the security risk in the hardware system. It is the most appropriate process that used in the
encryptions. There are different developing application applicable the data encryption.
Securing the sensitive information- Encryption is important part of each and every solution of
security that provide the different mechanisms such as
 It is Used the strong user authentication service to easily identity the proper identity.
 Granular access control to see the actual limit of users
 Accountability and auditing service providers
 Network encryption to protect and secure their confidential data at the time of
transmissions.
Stored data encryption in the oracle- It can use the various number of security threats which is
clearly selective the encryption sensitive information and data before storing the data by using
oracle because it provides the better quality of facilities to improve the security aspects in proper
manner. In the database system, It is applied the different algorithm supports such as
 Data Encryption standard (DES)
 Advanced Encryption Standard (AES)
 Message authentication Code (MAC)

Propose An App for Normal Man /Screenshot of Applications

Create Risk chart with probability and mitigation plan with the help of primary data
Each and every devices are required for used the proper security that help for securing
their data and information in proper manner. It is an essential to maintain the proper
communication. There are various types of security issues and risk generated in the system
which requires for user to manage and control their data information in access amount because
other attacker can easily damage the entire processing of system such as computer, smartphone
and tablets.
Risk probability How to remove Percentage of risk
Maximum- 5
Minimum- 2
Data leakage- Data leakage is possible
in the mobile application because it is
real time problem that arise when the
application installed in the Smart
phones. They always take permission to
access the data but user cannot always
check the security. In this way, it can be
Antivirus – It is
based on the
computer programs
which also known as
anti malware that
provide the facility to
remove threats,
5

lost the data quickly in the smart phones
(White and et.al., 2017). There are
typically lot of application found that
store in the devices and perform
different actions such as advertisement
and send the personal details of firms
etc. this type of advertisement is fake
and cybercriminals attack to hack all the
personal information in the devices.
Data leakage is the most common cause
of security in the devices such as Smart
Phones, tablets etc.
malware and prevent
to the unwanted
software. This
software is usually
generated to remove
all viruses in the
entire computer
system and smart
phones. This software
is started to give
protection to other
device.
Unsecured Wi-Fi- there are various
types of free wireless network available
that usually unsecured that impact on
the functionality of mobile phones.
Many cybercriminals can used this Wi-
Fi and damage the entire system in
quick manner. According to the British
politicians who agreed that free wireless
security is necessary because data can
be hacked by the hackers. It is an
experimental thing that hacked with the
help of technology and this criminal
easily access the personal information
such as Facebook account, bank details,
account number, card details etc. All the
confidential information requires for
protecting by using different techniques.
Firewall – Firewall is
basically networks
security system, that
help for providing the
facilities to monitor
and control all types
of outgoing and
incoming traffic in
the network. It can
establish the barrier
among the internal
trusted network and
external network
such as internet
(Willison, Warkentin
and Johnston, 2018).
It is divided into
different ways such
as host based and
2

network based.
Network firewall
helps for filtering the
traffic among two or
more network
system. It also runs
the network in
different hardware
systems.
Network Spoofing- It is a major
security issues where the hacker set up
their fake access point in different
places such as airport, coffee shops,
libraries etc. Cyber criminals provide
the access with the specific name such
as free airport services etc. In this way,
many people confused to connect with
the access. In this way, it easily accesses
all the data and information in effective
ways (Willison, Warkentin and
Johnston, 2018). Many people uses the
same email and password used in the
different services which allows for
hacker to easily comprises their email
with e-commerce and with other secure
information. This is also common
security issues happen at anywhere and
any places.
TCP/IP protocol –
This is the most
common protocol
that helps for
exchanging the data
over the internet by
using end to end
communication
between the client
and server. It is form
of packet that has to
be transferred from
one destination to
another. It is required
for TCP and IP to
manage the central
system because it
designed according to
the network system
which is reliable that
automatically manage
their services in the
5

devices.
Phishing attacks- The mobile phones
and devices are always powered on that
represented the front line of phishing
attack. Mobile user are more vulnerable
where they can receive the legitimate
mail. The user will check the main same
day as well as another day. Email
monitoring is a crucial part and never
click on the unnecessary links because it
is fake links that hack the data in easily.
Some times, it is very hard to identified
between the fake email and other that's
why, it is possible to manually enter the
URL. In this way, this awareness
provide the safety and security in proper
manner.
SSL – It stands for
Secure Socket layer
which is standard
security protocol that
establish the
encryption link
among the web server
or browser. This
technology is mainly
concern about the
data transmitted from
web server to the
browser by using the
encryption algorithm.
SSH – This is the
security method for
provide the safety at
the time of login
from one device to
another. It is known
as Secure shell and
using various option
for managing the
authentication
process in proper
manner. This process
is basically used for
the communication
method that create
strong encryption on
5

the network system.
IP – Internet protocol
is principal method
for communication
by using specific
data-grams that help
for sending signals
from one device to
another. It is the
better security
operations to manage
the entire
functionality. It is
continuous process
and transmitted the
signals in the packet
forms.

Legal, Social and Ethical issues:
Ethical issues in the security important part that requires for protecting against the threats
in the company, society. For Example- many people use the computer system and managing the
consumer profile, personal information such as national ID card etc. It is necessary for providing
the security and privacy. Many times, there are various types of fraud and spam cell phone loss
the data and information because they send the fraud link or message and many believe on them
to send their personal details. In this way, security and privacy are major concern about the
people and user. They always used the proper security application to maintain their information.
This type of issue directly impact on the social culture as well as society.
CONCLUSION
As per discussion, it concluded that Computer security is the most challenging part of
organization to handle the complication in the business operations and functions. Computer
system used the different techniques such as wireless network, smart phones, Wi-Fi etc. It also
identified the different types of terminology and technology that support to provide the best
quality of security in the network system. As per discussion, it easily identified that there are
different security issues that generated at time of data exchange from one device to another. It
also describes the various technique that help for providing the security in various devices such
as smart phones, customer system and tablets.

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