# How do you prevent Sybil attacks? 1\. We use aged Github accounts, SMS verification, BrightID, a few other undisclosed vectors, and Idena Network/ other DID solutions, as an identity solution for Gitcoin Grant contributions. Check out the trust tab of your profile to increase your trust level. 2\. In addition to Github's native anti-Sybil technology, we programmatically check these accounts for signs of Sybil attacks. Each contribution is assigned a trust score according to the likelihood that its part of a Sybil attack. Right now we do not take any action against Sybil attacks (other than the most egregious cases), but we are quietly collecting data to use in the future. 3\. We use Vitalik Buterin's pairwise bonding formula to dampen Sybil attacks {% embed url="" %} More on our anti-Sybil growth strategy here: {% embed url="" %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://support.gitcoin.co/gitcoin-knowledge-base/gitcoin-grants/general-questions/how-do-you-prevent-sybil-attacks.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.