What is "sitekey"

SiteKey is a web-based security system that provides one type of mutual authentication between end-users and websites. Its primary purpose is to deter phishing.

SiteKey was deployed by several large financial institutions in 2006, including Bank of America and The Vanguard Group. Both Bank of America and The Vanguard Group discontinued use in 2015.

The product is owned by RSA Data Security which in 2006 acquired its original maker, Passmark Security.