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docs/censorship/collateral.mdx

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+---
+title: Collateral Freedom
+sidebar_position: 30
+---
+
+Collateral freedom is an anti-censorship strategy that attempts to make it **economically prohibitive** for censors to
+block a resource.
+The diverse needs of businesses to exchange information across international borders makes it impossible to build a
+catalogue of "good" and "bad" networks or websites.
+A censor requires some confidence when they block a resource that it won't be affecting economic activity.
+It’s difficult to achieve accuracy with filtering as most internet traffic is encrypted and must be categorised
+at speed to make blocking decisions.
+As a result, censors will usually err on the side of under-blocking.
+
+One way to exploit this is by deploying solutions in large platforms that are **“too big to block”**, like public cloud
+providers.
+Public cloud providers host large numbers of clients in shared infrastructure to benefit from economies of scale, but
+this sharing also makes it difficult to know what content is being accessed.
+Similarly, large social networks host content from large numbers of publishers but all traffic between the user and the
+social network is typically encrypted and so the censor cannot know what is being read.
+Blocking the cloud provider would have a negative impact on businesses and would hurt state revenue, and blocking the
+social media platform would cause backlash from the people: neither is an attractive option for the censor.
+
+Another approach is to use constantly rotating identifiers, as even where a resource may be easy to block once
+identified, a new resource can be deployed quickly to replace it rendering the blocks ineffective.
+Due to erring on the side of under-blocking, attempts to access previously unseen content usually succeed.
+Even with a procedure for screening or approval, blocking by default would bog down innovation and development to the
+extent that it could cease, certainly falling behind other economies.
+This approach is particularly suited for news media where the majority of readers will be interested in an article for
+only a short time after it is published, and if it is later blocked by the censor then the effect will be minimal.
+
+With collateral freedom on your side **you can have the upper hand** when it comes to making your content accessible to
+your audience.