This research will be comprised of five main parts which are directly correlated to achieve some well-based conclusions. The first part will be regarding cybersecurity in general and cybersecurity in the European Union. Here we will give some data that will show the relevance of the topic in our daily life, while at the same time demonstrating why it is so important to have a good cybersecurity strategy to protect the Union’s citizens. In the second part, we will analyse the cybersecurity-related legislation in the European Union, which will give us a good head start as to how we stand in the European Union. The third part will consist of the analysis and description of the law enforcement agencies cooperation with companies in the European Union and how this cooperation can be successful enough for the benefit of the whole Union. In the fourth part we will discuss injunctions in the European Union, in general, and then we will specifically discuss injunctions in the United Kingdom, Germany and Spain. Last, but not least, we will analyse the United States’ legislation and law enforcement agency regarding cybersecurity. Also, during the course of our research, we will interview two Associate General Counsels of one of the biggest technology firms in the world, Microsoft. Microsoft is a leading company in the cybersecurity space with a broad range of experience of working to disrupt malware and botnets, through private law and through law enforcement partnership.