10 internet etiquette core rules . Rule 1: Do not engage in spam. Rule 2: Be tolerant of other people, and if your interlocutor does not follow the rules of etiquette, do not communicate in his manner. Rule 3 : Do not reveal sensitive information online. Rule 4: Create back-up copies for your important stuff. Rule 5: Do not download questionable apps or try to do so using unknown links. Rule 6: Come up with atypical passwords that do not contain any information about you. Rule 7: Get a separate (virtual) card for online payments. Rule 8: Create multiple email addresses: personal, work, and entertainment (for subscriptions and services). Rule 9: If you log in to a social network or email from someone else's computer, do not forget to log out. Rule 10: Install and update antivirus programs . source