Unlike some services that renew automatically until specifically cancelled, SSL Certificates have a set expiry date. Letting an SSL Certificate expire can have a number of consequences for the website owner and also for the end user.
Website Owner:
Reduction in trust as the site becomes unsecure
Decline in sales and revenue with increased shopping basket abandonments
Corporate brand and reputation adversely affected putting the business at risk
Website User:
Warning error messages displayed by browsers when visiting the site
Personal information at risk from man-in-the-middle attacks
Individual susceptible to fraud and identity theft
