Some Bitcoiners actually prefer radical transparency to paranoid defensiveness. Think about it.
Those aren't mutually exclusive... in fact , transparency is one thing I'm advocating to deflect these types of attacks.
I'd be interested to hear more about this when you have some time.
One must first understand the techniques:
https://cryptome.org/2012/07/gent-forum-spies.htm
The ways to combat it mainly are trying to be as open and transparent as possible to prevent rumors and conspiracy theories. Try and be as clear and objective as possible to try and avoid the spread of misinformation. Try and avoid assuming bad faith among peers to avoid excessive paranoia from creating fear and distrust with a group(this can be difficult to do as there are individuals one may need to ignore and one needs to reasonably review the evidence), ignoring very unproductive and wasteful individuals who constantly troll or try and turn the conversation off-topic, and try and discuss the facts as much as possible without getting bogged down in spiteful attacks or personal attacks.