Apparatus and methods for providing proxy and security services to one or more users via a publicly accessible network (e.g. the Internet) are disclosed Upon receiving a user request for content residing at a third-party location, a security server(s) retrieves the requested content from the third-party location, and monitors the retrieved content for suspected malicious code, which may be removed from the retrieved content before serving to the user. According to exemplary embodiments, the security server(s) is further operative to route value-added content to the user, for example, value-added content retrieved from various network sources. In some embodiments, this value-added content is associated with the request content from the third-party location. Exemplary value-added content includes but is not limited to advertisements (e.g. targeted advertisements), sponsored links, additional content mark-up, etc. Although the presently-disclosed service may be provided to any user, in exemplary embodiments, the service is provide selectively to pre-registered and/or authenticated subscribed users.