Cysic suspends bridge after minted tokens moved to Ethereum
The Block reports that an attacker minted 10 million CYS tokens and moved about $727,000 in proceeds to Ethereum through Mayan, deBridge and SWFT's Bridgers. Cysic suspended its bridge following the incident, according to the report. The report does not state who is responsible or whether the minted tokens were burned.
Only one publisher so far. Another independent outlet or an official source would raise it.
Security topic · core coin ETH
No time pressure
Three separate rule-based signals. None is the probability that the report is true. How they work →
Key facts
Attributed sources: The Block
ETH after this site detected it
- 5 minutes-0.01%vs BTC +0.01 pp
- 1 hour+0.40%vs BTC +0.16 pp
- 24 hours—No valid sample
Claims and open questions
What sources claim
- An attacker minted 10 million CYS and bridged about $727,000 in proceeds to Ethereum via Mayan, deBridge and SWFT's Bridgers, per The Block.
- Cysic suspended its bridge after the incident, according to The Block.
Still unresolved
- What Cysic's official statement says about the 10 million CYS mint and whether those tokens were burned or frozen is not established; an official notice from Cysic would confirm it.
- Whether the bridge suspension was a contract-level pause or a front-end halt, and its scope, is unconfirmed; Cysic documentation or a contract announcement would clarify it.
- Whether the roughly $727,000 in proceeds is a complete figure or an in-progress estimate is not verified; on-chain tracking or a Cysic post-mortem would confirm it.
Model-assisted explanation; citations, numbers and output format are checked. This is not independent semantic verification.
Source evidence
www.theblock.co
Published 18/10/2026, 16:07 · Received 20/10/2026, 09:11
Original source titles remain in their source language. Full articles are not republished.
Market reaction after detection
Returns start at the sample closest to site detection (within the same minute up to 10 minutes later), using the same data source and quote currency. Actual sample times are shown; missing observations remain blank.
| Window | Return | BTC | Difference from BTC (pp) | Actual sampled interval / source |
|---|---|---|---|---|
| 5 minutes | -0.01% | -0.02% | +0.01 pp | 20/10/2026, 09:11 → 20/10/2026, 09:16 (UTC) OKX · USDT |
| 1 hour | +0.40% | +0.24% | +0.16 pp | 20/10/2026, 09:11 → 20/10/2026, 10:13 (UTC) OKX · USDT |
| 24 hours | — | — | — | No valid same-source sample for this window |
Historical market context
Research: hourly returns and BTC beta →
Closed hourly candles from the 30 days before this event observation. Different venues are kept separate.
| Metric | Value |
|---|---|
| Hourly coverage | 100.0% (720/720) |
| Median absolute 1h return | 0.19% |
| 99th percentile of absolute 1h returns | 1.46% |
| Historical hourly BTC beta | 1.12 (719 matched returns) |
OKX · USDT · Context as of 20/10/2026, 09:11 · Last included candle closed 20/10/2026, 09:00
Hourly descriptive statistics, not minute-move probabilities. Backfilled history never moves the observation cutoff above.
Event timeline
Source publication, receipt and analysis times are separate. All times UTC.
Source published: The Block
Source received: The Block
Event first detected by this site
Evidence record updated
English explanation generated
Evidence record updated
Latest content update
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