It is possible to set your browser to inform you when a cookie is being placed — this way, you have the opportunity to decide whether to accept the cookie. On this confidential information website, you must accept cookies because they are essential for site security, which is their only purpose. Refusing to accept a cookie will prevent you from using the services provided.
Each browser has a procedure for setting cookie preferences. For example in Microsoft Internet Explorer, go to the Tools menu and click on Internet Options. On the Privacy tab, move the settings slider to Low or Accept All Cookies, then click OK.