Conathst.exe?

I've searched these forums (and Chrome's) and not seen any references to this so...

Recently (the last month) I've started to notice that there can be one to several conathst.exe *32 processes running.  The number seems to be tied to the number of time I start/exit Chrome.  These processes may or may not terminate when I exit Chrome.  I can't kill them and it requires a reboot to get rid of them. The description from Task Manager is "Google Chrome (Norton Identity Safe native host)" and the image path is "C:\Program Files (x86)\Norton Internet Security\Engine\21.6.0.32\conathst.exe".

OS, Chrome (Version 37.0.2062.124 m) and NIS (v21.6.0.32) are all up-to-date.  Not sure if it requires a "solution", but would be appropriate any info.  Thx...

p.s. System specs are as follows:

CPU: Intel Core2Quad 9450 2.66GHz
RAM: 4GB
Video: nVidia GTS 450 w/1GB RAM
OS: Windows 7 Pro 64-bit SP1
Monitor: Samsung P2450H 24-inch monitor