Have you received this annoying popped up message telling you that something called a Certificate Authority from VeriSign had expired. Has you system been invaded, or worst yet, has someone stolen you banking information?
You can safely ignore the warning and continue using your online bank account. (But you should probably yell at them about this; not having updated certificate is a bit of a faux pas.) The key thing is to make sure the site is using encryption, notably SSL, to encrypt information sent between your computer and the web site. Part of that process involves the site sending a copy of its SSL certificate to your browser. VeriSign is the primary issuer of these certificates, which expire after a certain amount of time. A number of sites have neglected to update their certificate after they expire. When you visit a site with an expired certificate, you’ll get the annoying warning message you saw. However, you can still establish a secure connection and conduct business. To make sure the site uses SSL, check the site URL, it should start with https://. If it doesn’t, don’t use the site for financial transactions.
To learn more about VeriSign and SSl, head to VeriSign SSL page.