I’m noting down fixes as I find them, and so far they are effective. However, our fixes face the same dillema as their changes - what one person can contrive another can work around.

We have the advantage of numbers, so we generate a wider range of work arounds, but our opponent can also see those work arounds (we share them freely) and so has an easier time countering them, i.e. they are faster at reversing each individual fix.