In a step towards enhancing security for the signing process within Authentisign, the vendor has added a "captcha" prompt before a user can access an invitation to sign documents. Below is a screen shot of what users will see when they click on the link in an Invitation email. Once the signer checks the "I'm not a robot" box, they will be taken directly to the Adopt Your Signature screen as usual.

This will greatly increase security, as well as eliminate issues caused by Microsoft Office 365 interfering with signing documents. This new feature is effective starting September 18, 2018.