Kasuta topeltkinnitusega (MFA) sisselogimist, kui tarkvara seda võimaldab. MFA vähendab oluliselt riski, et volitamata isik saab ligipääsu broneerimissüsteemile, kassale või veebilehe halduskeskkonnale.
A double opt-in is adds an additional step to the email subscription opt-in process, requiring a user to verify their email address and confirm interest. Double opt-ins signify a higher level of user interest, though its effectiveness has been both lauded and disputed by marketers.
