Is Monero Safe?
Risk Grade: C+ (40/100)
Monero is rated as elevated risk — multiple novel mechanisms and notable interaction risks.
Moderate risk — FCMP++ Trail of Bits audit completed (May 2026, no critical findings disclosed) and THORChain XMR mainnet live provide positive development signals. Regulatory risk escalated as EU MiCA custodial ban phases in through 2027, UAE enacted a platform-level ban, and Monero was directly cited in the May 2026 THORChain hack laundering trail. The RandomX hashrate concentration vulnerability persists structurally despite Qubic's exit.
Monero is the leading privacy-focused cryptocurrency, using mandatory ring signatures, stealth addresses, and RingCT to make all transactions private by default. With a market cap of approximately $7.6 billion, XMR ranks among the top 20 cryptocurrencies. Its C+ grade reflects the 2025 51% attacks — which the Qubic mining pool executed but has since exited as of April 2026 — alongside 73 exchange delistings due to regulatory pressure on privacy coins. These risks are balanced by 10+ years of operation, a fair-launch distribution, active development momentum (Ring Signature v3 deployed March 2026, FCMP++ beta stressnet live with audit in progress), and a tail emission model providing permanent mining incentives.
TVL
—
Mechanisms
6
Interactions
5
Value Grade
B-
Key Risks for Monero Users
In August-September 2025, Qubic's mining pool captured over 51% of Monero's RandomX hashrate through dual-mining incentives, executing chain reorganizations of 6 and 18 blocks. Kraken halted XMR deposits during the incidents. Qubic exited Monero mining on April 1, 2026, transitioning to Dogecoin, which removes the immediate threat actor. However, the CPU-friendly RandomX algorithm remains theoretically capturable by any future dual-mining scheme offering sufficient secondary economic incentives.
Monero faced 73 exchange delistings in 2025, including Binance globally and Kraken in parts of Europe. EU MiCA Article 79 explicitly bans custodying anonymity-enhancing coins across all 27 EU member states, with full implementation by 2027; UAE/Dubai enacted a platform-level ban in early 2026. THORChain XMR mainnet launched in May 2026 providing non-custodial swap access, but THORChain itself suffered a $10.8M exploit days after the integration and Monero was cited in the attacker's pre-attack laundering trail. Liquidity increasingly depends on P2P and DEX venues, which offer lower volume and wider spreads than centralized exchanges.
All Monero transactions are mandatory private — there is no transparent mode. This means the total circulating supply cannot be independently verified from the blockchain. Supply integrity depends entirely on the mathematical soundness of ring signatures and RingCT. A cryptographic flaw could allow undetectable inflation.
The tail emission of 0.6 XMR per block provides a permanent security budget, but at current prices the total annual miner revenue may be insufficient to prevent hashrate concentration, as the 2025 attacks demonstrated.
Top Risk Factors
- •In August-September 2025, the Qubic mining pool gained >51% of Monero's RandomX hashrate through its 'useful Proof-of-Work' dual-mining incentive, executing 6-block and 18-block reorganizations. Qubic exited Monero mining on April 1, 2026 following its transition to Dogecoin, removing the immediate threat. However, the underlying vulnerability persists: any future dual-mining scheme offering sufficient secondary rewards could repeat the attack on Monero's CPU-friendly RandomX algorithm.
- •Monero faced 73 exchange delistings in 2025, including restrictions from Binance and Kraken, severely fragmenting centralized exchange liquidity. EU MiCA Article 79 explicitly prohibits custodying anonymity-enhancing coins across all 27 EU member states with full custodial bans by 2027; UAE/Dubai enacted a platform-level ban in early 2026. THORChain XMR mainnet (v3.18) launched in May 2026 providing non-custodial BTC↔XMR swaps, but THORChain itself suffered a $10.8M exploit days after the integration — and Chainalysis traced the attacker's pre-attack funding through Monero, amplifying the regulatory narrative against XMR's privacy features.
- •Mandatory privacy (ring signatures, stealth addresses, RingCT) means all transactions are private by default, making supply auditability dependent on the cryptographic soundness of the privacy primitives. Unlike Zcash's opt-in privacy, there is no transparent fallback to verify total supply.
- •FCMP++ (Full-Chain Membership Proofs), which replaces ring signatures with ZK proofs and expands the anonymity set from 16 to 150M+ outputs, completed a Trail of Bits audit May 11-22, 2026 with no critical findings publicly disclosed. Security researcher Taylor Hornby — who used AI to discover a critical 4-year-old counterfeiting vulnerability in Zcash's Orchard pool (patched June 1, 2026) — announced on June 6 he is adding Monero to his audit queue, introducing near-term cryptographic uncertainty. Until FCMP++ deploys to mainnet (targeted mid-to-late 2026), the existing ring signature privacy model remains in production.
How Monero Compares to Peers
Monero ranks #44 of 58 L1 protocols (below-median — riskier than average). At a risk score of 40/100, it's 7 points riskier than the sector average of 33/100.
Adjacent peers: Berachain (C+, 39/100) is ranked just safer, and Worldcoin (C+, 40/100) is ranked just riskier.
See the full L1 sector leaderboard or the Monero vs Worldcoin comparison.
Common Questions about Monero
Plain-English answers based on Monero's scores across Hindenrank's 8 risk dimensions. The highest-scoring (riskiest) dimension is Scale Exposure (9/10).
Has Monero ever been hacked or exploited?
Monero has had some operational issues or moderate incidents in its history. The track record dimension scored 8/15 — not catastrophic, but enough to flag. Look at the specific events and whether they were addressed by the team before drawing conclusions.
How much money is at stake in Monero?
Monero currently holds an undisclosed amount of user capital. Smaller TVL means individual depositors carry a larger share of any loss event, and it can be harder to exit a position quickly during stress.
What's the worst-case scenario for Monero?
Hindenrank has identified specific collapse scenarios for Monero. The most prominent: "Repeated Hashrate Capture Enabling Systematic Double-Spend". The trigger condition is A mining pool or dual-mining scheme captures >51% of RandomX hashrate for periods exceeding 24 hours, enabling reorganizations deeper than the 10-block safety threshold.. Reading through the full scenario list on the protocol page is the single best way to understand the actual failure modes — generic "smart contract risk" is rarely the thing that takes a protocol down.
Is Monero regulated or insured?
Monero faces material regulatory exposure (8/10 on this dimension). This may stem from counterparty concentration, jurisdiction risk, or specific products attracting enforcement attention. Users in regulated jurisdictions should consider whether they are comfortable with this profile before depositing. No DeFi protocol carries FDIC-style insurance — even with low regulatory risk, depositors are not protected in the way bank customers are.
What are the biggest red flags for Monero?
Hindenrank's retail-focused risk audit flagged: In August-September 2025, Qubic's mining pool captured over 51% of Monero's RandomX hashrate through dual-mining incentives, executing chain reorganizations of 6 and 18 blocks. Kraken halted XMR deposits during the incidents. Qubic exited Monero mining on April 1, 2026, transitioning to Dogecoin, which removes the immediate threat actor. However, the CPU-friendly RandomX algorithm remains theoretically capturable by any future dual-mining scheme offering sufficient secondary economic incentives. Monero faced 73 exchange delistings in 2025, including Binance globally and Kraken in parts of Europe. EU MiCA Article 79 explicitly bans custodying anonymity-enhancing coins across all 27 EU member states, with full implementation by 2027; UAE/Dubai enacted a platform-level ban in early 2026. THORChain XMR mainnet launched in May 2026 providing non-custodial swap access, but THORChain itself suffered a $10.8M exploit days after the integration and Monero was cited in the attacker's pre-attack laundering trail. Liquidity increasingly depends on P2P and DEX venues, which offer lower volume and wider spreads than centralized exchanges. All Monero transactions are mandatory private — there is no transparent mode. This means the total circulating supply cannot be independently verified from the blockchain. Supply integrity depends entirely on the mathematical soundness of ring signatures and RingCT. A cryptographic flaw could allow undetectable inflation.
Should beginners deposit into Monero?
Monero's C+ grade puts it in the elevated-risk band. This is not a beginner-friendly protocol. Anyone depositing here should treat the position as speculative and avoid concentrating significant savings in it.
How does Monero compare to safer L1 alternatives?
Monero is one protocol in Hindenrank's L1 coverage. The safest L1 protocols on the leaderboard tend to share three traits: a long incident-free track record, conservative mechanism design, and high-quality public documentation. Compare Monero against the full L1 ranking before committing capital.
For the full 8-dimension score breakdown, the radar chart, and dependency graph, see the Monero risk report.
Read the Full Monero Risk Report
This protocol has 2 collapse scenarios. 1 high-severity interaction risks identified. See the full mechanism classification, interaction matrix, and deep-dive recommendations.
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