How to deal with defamation of powerful people, companies?

[neku]

If some of the largest tech, internet companies are extremely vicious in criminally defaming a small online business owner, spreading fake team stories when the business owner is completely isolated, what can be done to end the defamation?

 

[Starmix]

It isn't happening here, and I also do not know how to solve it, except by reporting them to the police authorities. That is too much already.

 

[eLdavis]

Taking legal action would be the best cause of action, but if the judiciary system in your country is corrupt, then this might not work.