This book is a set of rules for working safely in today's information world. We did not notice how the devices in our home began to play a key role in the life of every person. Computers, smartphones, as well as other technology, is fraught with many opportunities. Hackers can take full advantage of them, and not just the rightful owner. For this reason, today everyone should know the basics of personal cybersecurity. It is for the purpose of explaining this material to ordinary users that this work was written.