Internet – one of the greatest innovations of our times – has become a familiar term in our daily life. Besides its undeniable positive influences, it is necessary to acknowledge the disadvantages it brings. The most predominant drawback that people need to consider is security issues. As the Internet is widely used in different aspects of life such as business or education, users’ privacy can run a risk of invasion by hackers, causing their personal information to be leaked. Furthermore, in the virtual world where people are connected with each other and access is unlimited, it is a good opportunity for scammers and cyber criminals to approach their “preys”. Another bad side of this tool is the spread of false or inappropriate information. Every day or even every hour, a number of information is freely uploaded and shared without any restrictions.As a result, many people exploit this to distribute fake news for their own advantage, which can have a negative impact on a large scale. Moreover, the availability of entertainment on the Internet also makes unhealthy materials more accessible than ever, leading to a rise in behavioral problems, especially juvenile delinquency. Last but not least, Internet can be seen as additive. Nowadays, people are likely to spend hours surfing the web, it can be at class, it can be at work or at lunch, anywhere and at any time. Sometimes it may become a distraction, causing them to work ineffectively. Watching your favorite film or finishing work – that’s definitely a hard question. Besides, some people are so addicted that they live in the virtual world more than in the real world. They tend to express their feelings and opinions freely on social network while being rather reserved in the outside world and lacking interaction with others around. To put it briefly, much as the Internet offers a wide range of benefits in different fields, it has the cost that needs careful consideration.