Cyber Security is the protection of unauthorized
access of the information. Different threat and issues are present
in the network which stole unpredictable amount of data every
year. For the information technology and computer systems, a
cyber security rule is required to compel different group as well as
businesses to secure their systems and information from
cyber-attacks. In the healthcare sector huge amount of data can
be theft every year which is dangerous for both government and
personal view. The technical advancements have increased the
risk’s potential in the network in Cloud and Cyber. Security &
privacy cracks are the vital issues which need to mitigate to
maintain the dignity of the network. This paper conducted a
review to secure the network from network security issues. There
are various attacks which are vulnerable to the network like DoS,
DDoS and Spoofing. These attacks have been described to identify
the attacker’s capability. In order to facilitate this, networks such
as cloud, ad-hoc, cyber has been described to determine the
security, a paradigm. A literature from past studies has been
conducted to identify the threats and their behavior. Different
types of attacks and their behavior is also studied, and a tabular
structure is also presented for better understanding.