Re: Harvest Away......Avoidance Is Possible.........
If they're looking, they would just run a query on the history: SELECT phone_number FROM calls WHERE name_known=false ORDER BY call_frequency;
There is your list of people who use burner phones. At the beginning, that's a lot of unknown callers and the query isn't useful. If they start attaching names to numbers, the list gets smaller and only consists of people who are intentionally preventing them from making those links. That is your list of people of interest.
And yes, there are ways to fight against that, just as there are for every other abuse. Those methods are more difficult, easier to mess up if you think you know more than you do, and more easily made illegal when only a small, easily scapegoated subset are doing them. For example, if the search is for numbers without names linked to them, you could get a phone under someone else's name, but that requires more effort and could become challenging to keep up, not to mention that another query could identify people with multiple numbers that behave in completely different ways (calling different people from different locations). Turning something like this into a 1984-esque infallible surveillance regime is nearly impossible, but turning it into something pretty bad is much easier.