How secure is HelloSign?
Security is what we're all about! Our documents are behind a firewall and authenticated against the user’s session every time a request for that document is made. The entire site is https. All communications use SSL encryption and all data is stored in a SAS-70 certified data center.
We also have the option of removing the PDF attachments from the confirmation email. You can do that on the “My Account” page. Email isn’t the most secure way to send documents. But, a lot of people like its convenience. So, we let people make that decision themselves.
We also have the option of removing your signatures anytime you send a new document if you don't feel comfortable storing them. Simply click the "x" next to the signature you want to delete the next time you create a doc and add a signature.
Also, if you’re concerned about the documents, you can delete the document inside of the interface; it then gets deleted from our system.