wa8yxm wrote:
Two things I can think of:
Modern computers often have "live tiles" that can download data, And as someone noted Facebook and others can "Auto-play" on you. Many web sites do that in fact.
WAR Driving: Cursing around looking for WI-Fi Signals you can tap into.. A good hacker can get past some encryption schemes. by the way. Then you download your PORN on the unsuspecting host's Data feed. YES it is a crime, it is a form of hacking which (all forms combined) costs the US over a Billion dollars a year.. Almost as much as (Political comment deleted by poster). yet the authorities treat it as "petty Juvenal crime" instead of investigating, Arresting, Convicting and handing the hacker a bill roughly equal to the national debt as they should.
I am not certain that it would be things like live tiles etc even the Windows update for Windows10 is only 3.5GB. That is a very large amount of data over a small time window. I would suspect streaming data or downloads like torrents would be the most likely cause.
War driving is a real possibility, I forgot about that. That should be easy to figure out though if your closest neighbor is a quarter mile, I am assuming there is not much in between (including cars). A car parked at the end of your laneway would be really obvious. If you see that, try turning off your MIFI if you see any suspicious cars nearby. If they drive off when you turn it off, you have a possible source, try to get the plate and report them to the police.
I would however take the issue quite seriously, this may not be someone simply catching up on House of Cards on Netflix. There have been many cases of people using other peoples unsecured networks or hacking peoples networks to download/distribute child porn. There have been cases of it ruining the life of the home owner while he spends years and life savings trying to prove his innocence.