This RTA forum is no place to lay charges let alone prosecute and convict.
......... anyone, including me, talking through their kick is no way to administer racing integrity.
Rather the responsibility lies with the stewards in each state being given the authority, and the political and funding support, to find and prosecute the rorters.
Tabcorp has a database of evidence of insider trading -- but, claiming 'commercial in confidence', there is no confidence that Tabcorp either looks for it intelligently or reports it when it is found.
Betfair seems to do better but there is no money in Betfair.
Either way, building a case against the insider-traders will be a painstaking, many-race exercise.
It will take time to identify the patterns in some punters knowing when to bet and when not to bet and linking those patterns to the better and worse performances of horses suspected of being manipulated.
...........this is a proper job....we need Sherlocks, Perrys and Rumpoles and anyone else with commonsense given the resources to get it done.
TAB punters will get no surprises when the offenders are identified and convicted.