nielsenupdate.exe runs as a service under the name Nielsen Update (NielsenUpdate) with extensive SYSTEM privileges (full administrator access). This is typically installed with the program NCP Connect published by National Consumer Panel and is most likely removed by most users once installed (59% removed). The file is digitally signed by The Nielsen Company (US) which was issued by the Symantec Corporation certificate authority (CA). This particular version is usually found on Windows 8.1 (6.2.9200.0).

CPU
Total CPU:	0.00076560%	0.028634%
Kernel CPU:	0.00051469%	0.013761%
User CPU:	0.00025091%	0.014873%
Kernel CPU time:	641 ms/min	100,923,805ms/min
Memory
Private memory:	2.79 MB	21.59 MB
Private (maximum):	6.5 MB
Private (minimum):	5.96 MB
Non-paged memory:	2.79 MB	21.59 MB
Virtual memory:	57.24 MB	140.96 MB
Virtual memory (peak):	61.02 MB	169.69 MB
Working set:	6.45 MB	18.61 MB
Working set (peak):	7.41 MB	37.95 MB
Resource allocations
Threads:	5	12
Handles:	138	600