"Verified by VISA"
You'll notice an LSO created from a popup when paying online using a VISA debit / credit card and you are asked for a security confirmation, this is where that confirmation originates.
This is part of RSA, view their LinkedIn page for more info, or simply check the WhoIS or do a Google search:
http://www.linkedin.com/companies/rsa-the-security-division-of-emc