Cloud computing is essentially the most rising technology today. It provides various resources such as software, hardware, computing devices, processors, storage, and so on to its users’ on demand in pay-as-you-go approach. Because of its distribute environment and introduction of the web, this computing is also liable to various attacks like DoS attack, Session Hijacking, Man-in-the-middle attack, and many others., accordingly the more than a few security concerns arises. For that reason, it is main to protect the cloud against hackers through constructing distinctive algorithms. This paper elaborates quite a lot of security concerns and widespread attacks in cloud. Beside of this it also excited about various attacks, actual world attacks happened and the treatments of attacks furnished by using researchers. We have also described how the India is becoming the paradise for cybercriminals across the globe and being targeted the business. In this paper we have taken survey of attacks in different cloud from the year 2005 to 20018. Especially, we have taken a high-level view on the report of cybersecurity and internet threats, specially on the healthcare systems. The recapitulation of ransom ware from the year 2015 to 2016 has shown, as well as the global impact of Wanna Cry ransom ware has been graphically described.
