As the title really.
We have just changed to BT after 12 ish years with Pipex/TalkTalk. With Pipex we had unlimited broadband so didn't know how much we were using. Now the BT usage facility shows massive uploads - approximately 3 times as much as downloads (4.98GB vs 11.31GB in 2 weeks) but we cannot see what this is from.
We have 2 windows pcs which have Norton - scans show nothing of concern. My daughter has a Macbook and uses a ps3 online occasionally, the Mac has no antivirus software. These all connect via a wireless network.
We are thinking that there may be some nefarious program that is utilising bandwidth without our knowing - is this possible?
My next step is to thoroughly check the Macbook but does anyone have any other siuggestions please?