Activity Monitor - weird traffic

[drimac60]

Hello,

I have a 20inch imac (bought in summer 2007). I am just getting into using it as my primary computer. I was playing around in order to learn more and I found something through Activity Monitor that does not make sense to me.

In the Network Activity tab, I see "Data received:" and "Data sent:" sections. As I browse the web, these numbers change of course, but it seems that the Data received quickly reaches hundreds of megabytes! Right now, Data received: is 540MB and Data sent: is 280MB (after a reboot earlier in the day). I am not using the iMac as a server or anything and I have never seen a Windows PC sending out so many packets in the course of browsing the web.


Is this in line with others' experience? Should I be concerned about a spyware program on my iMac?

 

[Fleetwood Mac]

Nothing to be worried about, that sounds pretty typical to me.

 

[jjxc90]

Download the little snitch trial. It will prompt you to allow or deny network connections. Should allow you to see which apps are responsible.

 

[Cynicalone]

Do you have Time Machine backing up over ethernet or wi-fi? If so that will count as data being sent.