# kaal:claim:3227933-020

**Claim.** Anonymity in blockchain organizations makes them prone to Sybil attacks and 51 percent attacks, and anonymity combined with autonomy has already produced hacks.

**Type.** failure  **Support.** argued

**Holds when.**

- anonymous, permissionless blockchain organizations

**Source quote.**

> Also, the anonymity in blockchain organizations means that they are prone to "Sybil attacks" or "51% attacks."

**From.** Mark Fenwick, Wulf A. Kaal, Erik P.M. Vermeulen, *Why 'Blockchain' Will Disrupt Corporate Organizations* (2018), 5. All Just Hype?, page 13

**Cite as.** Mark Fenwick, Wulf A. Kaal, Erik P.M. Vermeulen, Why 'Blockchain' Will Disrupt Corporate Organizations (2018). SSRN: https://ssrn.com/abstract=3227933

**Verify.** sha256 of source PDF `a9e9660c4dc25a2202f1da4e762f5885256e05f68c53ca51942f5833a7a4c108` at https://raw.githubusercontent.com/wulfkaal/Academic-Papers/main/papers/pdf/Fenwick%20et%20al.%20-%202018%20-%20Why%20%27Blockchain%27%20Will%20Disrupt%20Corporate%20Organizations.pdf

**Failure mode.** Anonymity-enabled attacks  (family: sybil-and-identity-attack)

**Topics.** consensus-and-security, blockchain

**Keywords.** sybil-attack, 51-percent-attack, anonymity, blockchain-security

**Related claims.**

- restated_by: https://wulfkaal.github.io/claims/3227967-033
- extended_by: https://wulfkaal.github.io/claims/5254152-013

**Canonical form.** This markdown file is the canonical hashed representation of the claim. Its sha256 is the content hash used for attestation.