Switchboard Halts Oracles on SUI, Aptos After Security Scare
Sui (SUI)
Editor:
Eugene Serbin
cvj.ai reports that Switchboard has temporarily paused its oracle services on SUI, Aptos, IOTA, and Movement following a potential security compromise. The halt affects only the data feeds provided by Switchboard, while the underlying blockchains continue to produce blocks normally. This distinction is critical because oracles supply the price feeds and market data that DeFi protocols rely on for liquidations and risk parameters.
Without accurate data, automated smart contracts could execute decisions based on stale or manipulated information, potentially triggering cascading losses. Switchboard’s decision to pause operations is a precautionary measure, as the team detected a possible issue but has not confirmed a full exploit or data manipulation yet. The incident highlights the vulnerability of shared infrastructure, where a single security concern can ripple across multiple ecosystems simultaneously.
High-performance networks like SUI and Aptos are particularly reliant on these reliable data layers for their growing DeFi footprints. Until Switchboard publishes full details, applications using its feeds may need to halt markets or fall back to alternative data sources. This proactive shutdown prioritizes safety over continuity, preventing the worse outcome of serving unreliable data to users.
How the market reacted
Whalio's own Binance spot order flow for SUI, measured when this story was written up on 31 August 2026. Not the outlet's figures.
Sui is trading at $0.7111 with a 1-hour buy ratio of 36.3% and a 4-hour buy ratio of 46.8%, compared to a 24-hour buy ratio of 45.7%. The 1-hour buy ratio is notably lower than the longer-term averages, suggesting that immediate buying pressure is fading relative to selling pressure. Volume delta figures reflect this imbalance, showing a net outflow of -$601,329 in the last hour and -$501,139 over the past four hours. Over the last 24 hours, the cumulative volume delta stands at -$3,766,210, indicating sustained net selling pressure. The Cumulative Volume Delta (CVD) for the 24-hour period closed at -$5,905,618, confirming that sellers have dominated the flow. Net buying occurred for only 9 out of the last 24 hours, further underscoring the bearish sentiment in the spot market.
The latest daily buy ratio of 49.7% sits at the 54th percentile of the last 322 days, against a median of 49.4% - ordinary for this coin.
Twenty-four hours later
What SUI did over the 23 hours after the story broke. The market moves for its own reasons; this is what happened, not what the story caused.
Was that an ordinary day?
The same Binance spot measurements for SUI, averaged over the days leading up to the story.
Over the preceding week, Sui experienced a 16.4% price decline with a total volume delta of -$12,771,395. The 7-day average buy ratio was 49.2%, but the latest day saw a buy ratio 3.5 percentage points lower than that average. Trading volume was also subdued, registering at 0.74 times the weekly average. This indicates that the current day is an unusual one, characterized by weaker buying interest and lower activity compared to the recent norm. Only 3 of the last 7 days saw net buying, highlighting a broader trend of seller dominance leading into this event.