In just three recent years, the number of internet users increased by about 40% while 90% of the data on the internet has been created since 2016. Given even more data moving online with the Internet of Things, the amount of information on the Internet will expand exponentially. Welcome to the era of knowing when we continue to digitize every aspect of our lives and finally realize that our privacy has critical value in a robust information society. We all have information we want to keep to ourselves, and since most of our communications take place online, we should take measures in order to protect it from prying eyes. If you have been following the news, you‘ve probably heard plenty of stories about privacy breaches, information leakage, cyber attacks and such. Last year was monumental for data breaches: in 2017, the number of data records compromised in publicly disclosed data breaches surpassed 2.5 billion, 88% up from 2016. Anonymity, privacy, and security are central concepts in the online world, and if you don‘t take them seriously, credit card numbers, confidential documents, personal photos are just a few of the things you can say goodbye to. In fact, online safety needs different measures depending on your goals and activities. However, privacy, anonymity, and security have been reduced into a big mess of blurred lines and unclear definitions. So let‘s first define these basic concepts so we can tell them apart: Privacy is concerned with the collection and use of personal data. So when the internet giants gather your private information without your knowledge and sell it to advertisers at a mass-scale, they definitely compromise your privacy. Anonymity is not just a poorly understood aspect of privacy. It is one of the amazing gifts of the internet that enables people to express their opinions and ideas without fear. Keeping their true identities under the safeguard of anonymity, people can confidentlydiscuss their bosses or spouses, challenge political authority, attack organized crime, and come forward with inconvenient facts and truth. Security is a broad concept that encompasses different mechanisms, which guard our privacy and anonymity against unwanted intruders. Security can include network protection, authentication, and data encryption to name just a few. International cyber wars, endless successful hacking attacks, and huge losses have become a modern threat. There is a constantly growing number of hacking of mobile devices, social media accounts, and private emails. According to the trend of the recent years, the number of attacks will increase by at least 50% in 2018 compared to 2017.