Defending against cache pollution attacks, highly detrimental attacks that are easy to implement in Named-Data Networking (NDN), currently suffers from the lack of coordination. Solving cache pollution attacks is a prerequisite for the deployment of NDN, which is widely considered to be the basis for the future Internet. We present CoMon++ to this end, a framework for lightweight coordination that protects from cache pollution and further attacks in NDN. Our simulation studies demonstrate that CoMon++ efficiently and effectively prevents cache pollution, remarkably outperforming a very notable state-of-the-art solution.