Slampoil,Here's some info for you:Definition of the offence of...

Slampoil,

Here's some info for you:

Definition of the offence of insider trading

It is an offence under the Corporations Act to trade using inside information, or communicate inside information to others who will, or are likely to, trade on the inside information.

You could be prosecuted if it were proven:

That you possess information which is likely to have a material effect on the value of a particular financial product that is able to be traded on a financial market.
That you know (or ought reasonably know) that the information is not generally available
That you (or your agent) trade in that particular financial product; or you tell someone else about the information knowing that that the other person will trade in the product.

Given the drill start date could be considered material for a company like NSE, I reckon you should be glad the post was taken down as you represented that you knew someone who had access to information not available to the public.