The main purpose of the digital certificate is to ensure that the application belongs to the entity to which the certificate was issued. The Dashlane digital certificate does not guarantee that a signed application is safe to run, but rather informs the user that the software was digitally signed by Dashlane and verified by a trusted Certificate Authority (CA).
About (from Dashlane at www.dashlane.com)
“We created Dashlane for people who don't want to settle for the mundane, who want to take charge of their time, and who value technology that makes their experiences online better and more rewarding. Life in the Dashlane means being ushered through the front door of any website, on any browser. It means buying stuff online without having to type in billing, shipping, or payment info. It means being safer, because all your passwords and private info is encrypted only you have the key to unlock it. It means less complexity and more simplicity on every device you own.
Complete any purchase in seconds, on any website. Dashlane automatically fills out checkout fields — and you never have to touch the keyboard, be it on your computer or mobile device. All the information you need to purchase online — shipping and billing addresses, payment details, and more — are safely encrypted on your own devices. Automate your receipt-tracking with Dashlane! Easily track all your spending in one place. All online purchases are instantly recorded and stored in your account. Life in the Dashlane means being ushered through the front door of any website, on any browser. It means buying stuff online without having to type in billing, shipping, or payment info. It means being safer, because all your passwords and private info is encrypted only you have the key to unlock it. It means less complexity and more simplicity on every device you own.”