Rapport is a light-weight security software tool made by Trusteer, a Boston-based browser security vendor. The tool is effective enough to have a customer base now of nearly 200 banks representing tens of millions of accounts. Rapport, launched in 2008, “locks down customer browsers and creates a tunnel for safe communication with the online website” It can be used to protect transactions with other websites as well. The software “runs in the background” and is updated regularly — sometimes twice a week.”]