Abstract
The article provides an overview of cloud computing and services provided on the basis of its virtual technologies. Technological progress has affected all areas of people's lives. In the world of information technology, several thousand services and projects are created every month. More and more companies are switching to cloud services to improve the performance of local projects, to improve their architecture and infrastructure of the company, to save budget and time. The massive transition to cloud computing creates the illusion of one hundred percent security of user’s personal data in cloud storage. Each user's personal information is confidential, so cloud systems must ensure the integrity and reliable protection of user data. This article analyzes security measures in cloud computing.