Cloud services are widely used across the globe to store and analyze Big Data. These days it seems the news is full of stories about security breaches to these services, resulting in the exposure of huge amounts of private data. This paper studies the current security threats to Cloud Services, Big Data, and Hadoop. The paper analyzes a newly proposed Big Data security system based on the EnCoRe system which uses sticky policies, and the existing security architectures of Verizon and Twilio, presenting the preventive measures taken by these firms to minimize security concerns.