For starters you should probably put up a minimal barrier at your registrar to make it less easy to figure out your personalia. That won't deter a big fish but it will help a bit and it will buy you a bit of time in case someone does say in the media that they'll sue you. Try to get in under the rights that the mainstream press has when protecting sources and the 'gathering of news'. Try to stay away from libel, phrase stuff as opinions unless you can back them up with evidence.
Second, the best defense against a suit like that is to make sure the data gets spread around. Set up a system of mirrors in different countries administered by different people that will host all the content regardless of where they sue. 10 lawsuits in 10 different countries is a whole lot harder than one against a sitting duck.
If possible host the copies of the documents outside the location where the target of your project is located, so if you publish on say a Canadian politician don't host your stuff in the US and Canada, but simply link to it.
Research your co-location facility how they act in the case of a takedown request.
Second, the best defense against a suit like that is to make sure the data gets spread around. Set up a system of mirrors in different countries administered by different people that will host all the content regardless of where they sue. 10 lawsuits in 10 different countries is a whole lot harder than one against a sitting duck.
If possible host the copies of the documents outside the location where the target of your project is located, so if you publish on say a Canadian politician don't host your stuff in the US and Canada, but simply link to it.
Research your co-location facility how they act in the case of a takedown request.
Talk it over with them before committing.