Crypto markets can move fast, but not every trending token deserves a place in your portfolio right now. Some coins may look exciting on the surface, but carry near-term risks such as fresh exploit incidents, large upcoming token unlocks, or the uncertainty both leave behind.
This list does not mean these projects have no future. It simply means the risk-reward setup looks weak for September 2026, especially for retail investors who may not be tracking security incidents or unlock calendars closely.
Cronos is the layer-1 blockchain built by Crypto.com, with CRO as its native token used across the exchange’s broader ecosystem.
Why avoid it right now: On August 30, 2026, an attacker exploited Tectonic, the largest lending protocol on the Cronos chain, by inflating the price of its thinly traded TONIC governance token roughly 100x in about 20 minutes, then borrowing against the manipulated collateral. Estimated losses range from $75 million to as high as $119.5 million, and the incident was severe enough that Cronos validators halted block production on the entire network to stop further outflows, an unusual, chain-wide response.
Crypto.com has said its exchange and app remained unaffected, but the underlying chain’s largest lending market has effectively been drained, and as of this writing, Cronos had not confirmed a timeline for resuming normal operations or how much of the frozen funds can be recovered. CRO fell on the news and remains exposed to further uncertainty until the chain fully restarts and the extent of bad debt is confirmed.
Flow is a layer-1 blockchain known for hosting consumer applications like NBA Top Shot, with FLOW as its native token.
Why avoid it right now: On August 31, 2026, More Markets, a lending protocol built on Flow’s EVM-compatible layer, was exploited for an estimated $9.3 million after an attacker combined a liquid staking token with the protocol’s borrowing mechanism to drain its WFLOW lending reserve. This is not Flow’s first security incident this cycle: a separate December 2025 exploit in Flow’s Cadence runtime allowed an attacker to mint $3.9 million in counterfeit tokens, forcing a network-wide halt and a controversial rollback discussion at the time.
Two distinct exploits on Flow-based infrastructure within roughly eight months point to an ongoing pattern of security incidents on the network, not an isolated event, which is the core reason to be cautious right now.
Opinion (OPN) is the native token of Opinion.Trade, an AI-driven onchain prediction market platform.
Why avoid it right now: OPN has one of the more aggressive unlock schedules of any token on this list. A scheduled release on September 5, 2026 adds roughly 39.25 million OPN, worth around $2.1 million, to circulating supply, representing about 10% of OPN’s current circulating supply in a single event. This is not a hypothetical risk: OPN’s past unlocks have historically been followed by sharp drawdowns, including a 73.3% decline in the 14 days after its June 2026 unlock, with an average drop of roughly 38.4% across its last four unlock events. With another unlock of similar scale landing in the first week of September, the pattern this token has already shown twice is a real, near-term risk, not just a theoretical one.
Sui is a large, established layer-1 blockchain, with SUI as its native gas and staking token.
Why avoid it right now: SUI has a scheduled token unlock in the first days of September 2026, releasing roughly 22-24 million SUI (worth approximately $10-18 million) to Early Contributors and Community Reserve allocations. To be clear about scale, this specific unlock represents a modest 0.5-0.6% of SUI’s market cap, meaningfully smaller than the unlock risk carried by OPN or EIGEN on this same list, and SUI’s largest token allocations are already released, with roughly 40% of total supply unlocked. SUI’s inclusion here is a near-term caution around a recurring, cliff-based monthly unlock pattern that continues into 2030, not a signal that SUI carries the same acute risk as the other tokens on this list. Investors already holding SUI for its underlying fundamentals may reasonably treat this as a smaller factor than the exploit and unlock risks above.
EigenCloud, formerly known as EigenLayer, is a restaking protocol, with EIGEN as its governance and security token.
Why avoid it right now: EIGEN has a scheduled unlock on September 1, 2026 releasing approximately 39.5 million EIGEN, worth roughly $7.7 million, equal to about 4.5% of circulating supply. Unlike some unlocks that go partly to community or ecosystem allocations, this entire tranche goes to investors and early contributors, the recipients most likely to sell into any strength. This is also not a one-off event: EIGEN has followed a fixed monthly unlock schedule since October 2025 that continues through October 2027, so this specific date is one instalment in an ongoing pattern of insider supply reaching the market, not an isolated risk. Compounding the near-term caution, ether.fi, the largest liquid restaking protocol, disclosed on August 6, 2026 that it had exited its EigenLayer restaking exposure entirely, a signal worth weighing alongside the unlock schedule.
| Token | Primary Risk | Approx. Price | Key Detail |
|---|---|---|---|
| Cronos (CRO) | Exploit / chain halt | ~$0.056 | $75M+ Tectonic exploit forced a full Cronos chain halt on Aug 30, 2026 |
| Flow (FLOW) | Exploit | ~$0.027 | $9.3M More Markets exploit on Flow EVM (Aug 31, 2026); second major exploit in 8 months |
| Opinion (OPN) | Token unlock | ~$0.05 | ~10% of circulating supply unlocking Sept 5, 2026; past unlocks averaged -38.4% in 12 days |
| Sui (SUI) | Token unlock (modest) | ~$0.83 | ~0.5-0.6% of market cap unlocking in early September; smaller risk than others on this list |
| EigenCloud (EIGEN) | Token unlock | ~$0.19 | ~4.5% of circulating supply unlocking Sept 1, 2026, entirely to insiders |
Prices approximate as of September 1, 2026.
Three of the five tokens on this list (OPN, SUI, and EIGEN) share the same underlying risk: a scheduled amount of new supply entering circulation in a short window. This matters because token unlocks increase the number of coins available to sell, regardless of whether demand has grown to match. When unlocked tokens go to early investors, team members, or insiders rather than community pools, that risk is typically higher, since those recipients are more likely to sell into any strength, which is exactly the case with EIGEN’s upcoming unlock.
An unlock does not automatically mean a price crash, SUI’s modest, well-telegraphed monthly unlocks are a good example of a supply event the market has generally absorbed without major disruption. But unlocks reliably increase uncertainty and volatility around the event, and OPN’s own unlock history (an average 38.4% decline in the 12 days following its last four unlocks) shows that this risk is not hypothetical for every token. Checking a token’s unlock calendar before buying takes just a few minutes and can explain moves that would otherwise look random.
CRO and FLOW’s inclusion on this list comes from a different kind of event: unplanned security incidents rather than scheduled supply changes. A DeFi exploit on a major protocol built on a given chain does not always mean the base-layer token itself was hacked, in both cases here, the underlying blockchains (Cronos and Flow EVM) remained structurally sound, and the exploits hit specific lending protocols (Tectonic and More Markets) built on top of them. But the market impact still lands on the native token, for a few concrete reasons: exploits shake confidence in the broader ecosystem, they can force emergency measures like a full chain halt (as happened with Cronos), and they raise real questions about how much bad debt or frozen liquidity remains unresolved in DeFi protocols the token’s ecosystem depends on. A single exploit is a risk signal; a second exploit on the same network within months, as with Flow, is closer to a pattern worth taking seriously.
None of the five tokens on this list are necessarily bad long-term projects. Cronos and Flow both suffered real, verified DeFi exploits in the final days of August 2026, with Cronos forced into a full chain halt and Flow experiencing its second major incident within eight months. Opinion, Sui, and EigenCloud all face scheduled token unlocks in the first week of September, though the scale of that risk varies significantly: OPN’s unlock has a documented history of sharp drawdowns, EIGEN’s goes entirely to insiders, and SUI’s is comparatively modest against its overall supply.
Avoiding downside is as important as capturing upside, and for September 2026, these five carry more near-term uncertainty than the setup rewards for most retail investors.
To track unlock calendars and price action on any of these tokens before deciding, explore Mudrex Learn or watch risk management breakdowns on the Mudrex YouTube channel.
Cronos (CRO), Flow (FLOW), Opinion (OPN), Sui (SUI), and EigenCloud (EIGEN) all carry near-term red flags this month, ranging from major DeFi exploits to scheduled token unlocks.(Power Protocol) all carry near-term red flags this month, ranging from choppy, unpredictable price action to large scheduled token unlocks.
Review the project’s whitepaper, token unlock schedule, team background, and on-chain data. Track regulatory news, exchange listings/delistings, and governance transparency to assess long-term viability.
Not always. An unlock simply increases circulating supply. If demand is strong enough to absorb the new tokens, the price impact can be minimal. But unlocks reliably increase short-term volatility and uncertainty, and larger unlocks relative to market cap tend to generate stronger selling pressure, especially when the newly unlocked tokens go to early investors or insiders rather than the community.
