RIAT Institute

qubic attack on XMR monero: No 51% attack (proven)

—

by

parasew
in
  • Based on the numbers at the time (1.7 GH/s vs ~5.8 GH/s network), Qubic’s actual share was ≈29.3% — nowhere near majority.
  • Multiple outlets amplified Qubic’s press/PR without independent verification; independent researchers and data sources dispute the “>51%” narrative.
  • Reorgs/silent mining ≠ proof of sustained 51% control.
  • Potential evidence for XMR price suppression and similarities to problems outlined in the Monerun

We have proof that Qubic has either misrepresented their own hashrate, or have posted misleading numbers of the total Monero network hashrate in their post1 about their alleged 51% attack. As of today (Saturday August 16) Qubic had a hashpower of 1.7 Gh/S, while the Monero Network Hashrate was at 5.8 Gh/s – which places Qubic at approximately 30% at best. The previous claims of a 51% attack are not verifiable and are provably wrong. The reported numbers have been already debunked by theblock.co2, by Shai Wyborski from Kaspa3, and by the Monero community4.

Qubic had 51% of the last 100 blocks at a specific time. But this does not equal to a hashrate being 51%! It only tells us that it “allows Qubic to build six blocks faster than the rest of the network by getting lucky.” 5

The numbers and information of recent posts by Coindesk6 and Cointelegraph just echoded original marketing information sent out by Qubic. The Defiant7 at least have reached out to exchanges, and to developers, which has provided a more nuanced view of the situation.

In a writeup from yesterday titled “Reaction to Coindesk’s poorly researched article about an alleged 51% attack on the Monero Network” we (RIAT) already discussed why the original article of Coindesk did just echo wrong and partial information. It is important to precisely look at verifiable facts, data and risks – in order not to fall for this orchestrated media stunt by Qubic.

Current and factual data can be observed at https://miningpoolstats.stream/monero

Some researchers have voiced the theory that the ultimate goal of the FUD campaign spearheaded by Qubic is to artificially supress the price of Monero. A potential reason is the recent price spikes in the past months, and thus a campain like this could make the exchanges be able to stack up on their Monero cheaply.

Historical events such as the Monerun have already shown that exchanges rarely hold full reserves of XMR. If users demanded large-scale withdrawals simultaneously, many exchanges would need to purchase Monero externally to cover liabilities.

As of writing, XMR withdrawals remain disabled on most major exchanges, with Kraken as the sole exception.

  1. retrodrive. “Qubic Performs 51% Monero Network Takeover Demonstration | Qubic.” Qubic.org, 12 Aug. 2025, qubic.org/blog-detail/historic-takeover-complete-qubic-miners-now-secure-monero-network. Accessed 16 Aug. 2025. ↩︎
  2. Naga Avan-Nomayo. “Monero Faces Chain Reorganization Fears after Qubic Says It Controls 51% of Hashrate.” The Block, 12 Aug. 2025, www.theblock.co/post/366535/monero-faces-chain-reorganization-fears-after-qubic-says-it-controls-51-of-hashrate. Accessed 16 Aug. 2025. ↩︎
  3. Wyborski, Shai. “The Qubic Minority Report | Parallel Thoughts.” Gitbook.io, 16 Aug. 2025, shai-deshe.gitbook.io/parallel-thoughts/proof-of-work/the-qubic-minority-report. Accessed 16 Aug. 2025. ↩︎
  4. “/R/Monero.” Reddit.com, 2025, www.reddit.com/r/Monero/comments/1mod130/psa_qubic_is_lying_they_dont_have_50_hash_rate/. Accessed 16 Aug. 2025. ↩︎
  5. Behnke, Rob. “Explained: The Monero 51% Attack (August 2025).” Halborn.com, 12 Aug. 2025, www.halborn.com/blog/post/explained-the-monero-51-percent-attack-august-2025. Accessed 16 Aug. 2025. ↩︎
  6. Knight, Oliver. “XMR News: Inside Qubic’s Controversial 51% Takeover of the Monero Blockchain.” CoinDesk, 12 Aug. 2025, coindesk.com/business/2025/08/12/monero-s-51-attack-problem-inside-qubic-s-controversial-network-takeover. Accessed 16 Aug. 2025. https://archive.is/wdX5c ↩︎
  7. Omelchenko, Denis. “Monero Faces Network Reorg as Community Split over Qubic’s Role.” Thedefiant.io, The Defiant, 14 Aug. 2025, thedefiant.io/news/blockchains/monero-faces-network-reorg-community-split-over-qubic-role. Accessed 16 Aug. 2025. ↩︎