Mobile TeleSystems Company, a digital ecosystem, has prepared educational lessons for teaching schoolchildren in grades 5-8 about digital hygiene and information security. The materials will help teachers in an interesting game format in an accessible language to inform about modern cyber threats and the main ways of protection from them, the principles of safe communication and behavior on the network. Informative methodological materials are posted on the website of the MTS creative online project "Generation M" in the "Children on the Internet" section. MTS developed them together with experts from the Regional Public Centre for Internet Technologies.