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XRP Ledger architect David Schwartz (<a href="https://x.com/JoelKatz" rel="noopener noreferrer nofollow">@JoelKatz</a>) addressed a pointed question on X this week: could a hostile state actor weaponize or shut down the XRP Ledger by targeting its validators? His conclusion was clear. <cite>Schwartz said state actors could disrupt XRPL temporarily, but lasting damage appears unlikely.</cite> The key reason: software can always be changed.
<h2 id="why-taking-out-validators-would-not-be-enough">Why Taking Out Validators Would Not Be Enough</h2>
The argument rests on how XRPL's consensus is structured. <cite>There are 150 or more validators on the network with 35 or more on the Unique Node List, and Ripple runs only one of those nodes.</cite> That distribution matters. Disabling <a href="https://x.com/Ripple" rel="noopener noreferrer nofollow">@Ripple</a>'s own machines would leave consensus largely intact, because no single operator controls enough of the validator set to bring the network down.
<cite>As long as fewer than 20% of trusted validators are faulty, consensus can continue unimpeded, and confirming an invalid transaction would require over 80% of trusted validators to collude.</cite> A state attack would have to suppress not just a handful of servers, but a large, globally distributed pool of independent operators.
<cite>According to Schwartz, validators could become anonymous, relocate operations, or run through privacy-focused infrastructure such as Tor, making replacements possible if operators stepped away. He suggested that the bigger risk would not be permanently breaking the network but creating enough disruption to discourage people from participating.</cite> Even that scenario, he argued, would drive protocol improvements rather than expose a permanent weakness.
<cite>"Whatever weaknesses or bugs they exploit can be fixed because software can always be changed," he said.</cite>
<h2 id="a-two-layer-emergency-fallback">A Two-Layer Emergency Fallback</h2>
Schwartz went further, sketching out what has been described as a contingency plan for extreme scenarios. <cite>Dubbed the "Doomsday" protocol, it would turn XRPL into a two-layer structure hidden behind anonymous networks such as Tor and I2P. High-performance nodes processing current transactions would be automatically replaced by reserves in the event of an attack or seizure, while the outer layer would act as an ultra-light governing committee, activated only periodically to adjust the validator composition and operating exclusively through anonymizers.</cite>
<cite>The approach has been described as a "Doomsday" contingency. It would not be a normal operating mode. Instead, it would act as an emergency path if the network faced direct physical or legal attacks.</cite>
Schwartz was clear that he was not describing an active threat. <cite>He did not say XRPL faces an active state attack. Instead, he described a possible crisis path for extreme pressure.</cite> The broader point, consistent with his earlier positions on decentralization, is that <cite>the XRP Ledger Consensus Protocol is a byzantine fault tolerant consensus mechanism, designed to work even if malicious actors are attempting to control or interrupt the system.</cite>
Sources: <a href="https://crypto.news/ripple-architect-says-xrpl-can-go-underground-if-states-attack/" rel="noopener noreferrer nofollow">Ripple architect says XRPL can go underground if states attack (crypto.news)</a> <a href="https://ethnews.com/is-xrpl-built-to-survive-state-level-attacks-heres-what-chief-architect-says/" rel="noopener noreferrer nofollow">Is XRPL Built to Survive State-Level Attacks? Here's What Chief Architect Says (ETHNews)</a> <a href="https://xrpl.org/docs/concepts/consensus-protocol/consensus-protections" rel="noopener noreferrer nofollow">Consensus Protections Against Attacks and Failure Modes (xrpl.org)</a>

Schwartz says a state can disrupt XRPL but cannot mute it

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