My wife and I just moved. At our last location it was a non-issue, but now that we're located in a complex we have some really close neighbors. In setting up my computer I was without net access for a wile until my ISP pulled some levers and flipped the right do-dads. In the middle I looked to see if there were any other wifi networks I could join. There were about 8all locked. This got me to thinking (never a good thing). When I set up my wifi network, is there any real harm in leaving my network open? First, I'm not concerned about someone else using my internet to do x or y and having the FBI knock on my door. I'm also not too concerned about slowing my speed or anything. I don't do much that requires a fast connection. I'm really only concerned about any real threats to my own personal machine or data. Thoughts?