Abstract
We propose a system to detect superspreaders based on combinations of FM sketch, Bloom filter and hash table. It first eliminates sources which are not potential superspreaders, then counts the number of connections to distinct destinations (fan-out) for remaining sources. The proposed system is implemented on NetFPGA platform. Our experiment results show that the system can detect superspreaders with higher fan-out and estimate their fan-outs accurately using small amount of memory.