The first 1TS report warns that Ethereum’s social layer, its network of developers, institutions and norms, is a potential attack surface, vulnerable to stake centralisation, offchain asset custodians and regulatory capture

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The institutions that hold the offchain deposits may have influence over the Ethereum ecosystem.
Governments and regulators could pressure various entities that control important components of the Ethereum stack to censor or otherwise interfere with the Ethereum protocol.
On the governance side, the report warned that Ethereum’s social layer, its network of developers, institutions, and cultural norms, is itself a potential vector for attack.
Centralization of large amounts of stake can pose risks to Ethereum as a whole if the entities controlling that stake decide to collude. This economic centralization creates the potential for social governance capture.