Nostra Finance Exploit Highlights Starknet DeFi Vulnerability
Starknet (STRK)
Editor:
Eugene Serbin
bitcoinethereumnews.com reports that Nostra Finance, a decentralized lending platform on Starknet, suffered an exploit that serves as a cautionary tale for DeFi security. Blockchain security firm GoPlus Security uncovered the incident, which demonstrated how a single manipulated price feed allowed an attacker to withdraw millions in borrowed assets.
How the market reacted
Whalio's own Binance spot order flow for STRK, measured when this story was written up on 18 September 2026. Not the outlet's figures.
Whalio’s spot data for STRK shows a buy ratio of 39.1% over the last hour, dropping to 39.7% over 24 hours, indicating that buying pressure is fading relative to selling. The volume delta reflects this shift, sitting at -$166,513 in the last hour compared to -$398,439 over 24 hours. A buy ratio below 50% means sellers are dominating the market, while the negative volume delta confirms that more capital is flowing out than in. Over the past 24 hours, there were only 7 hours of net buying, with a total spot volume of $1,958,569 across 38,793 trades.
The latest daily buy ratio of 45.1% sits at the 9th percentile of the last 324 days, against a median of 48.6% - among the weakest buying days it has had.
Was that an ordinary day?
The same Binance spot measurements for STRK, averaged over the days leading up to the story.
Over the preceding week, the average buy ratio was 49.1%, making today’s 24-hour ratio of 39.7% a significant drop of 9.4 points. While volume was slightly elevated at 1.06 times the average, the price only rose 3.7% over eight days despite a total volume delta of -$620,664. Net buying occurred on only 3 of the 7 days, suggesting this is an unusual day for the coin given the sustained selling pressure. The current 24-hour volume delta of -$398,439 contributes to the weekly total of -$620,664, highlighting a consistent trend of outflows.