Solana Drops $1.1M in Rain Card Exploit
Solana (SOL)
Editor:
Eugene Serbin
newsbytesapp.com reports that an attacker exploited a security flaw in an old Rain Card smart contract on the Solana blockchain to steal $1.1 million on August 28, 2026. The breach affected Avici and Tria, which use Rain's technology for stablecoin cards, resulting in losses for 2,321 users who slipped past the two-signature protection rule. Rain patched the systems after the exploit was detected to block further attacks. The incident highlights the necessity of regular security updates in blockchain technology.
How the market reacted
Whalio's own Binance spot order flow for SOL, measured when this story was written up on 3 September 2026. Not the outlet's figures.
Solana is currently trading at $100.43 with a 24-hour buy ratio of 51.7%, indicating a slight majority of buy-side volume over the day. However, the 1-hour buy ratio has dropped to 41.8%, suggesting that short-term buying pressure is fading compared to the longer trend. The 1-hour volume delta is negative at -$1,426,310, showing recent selling dominance, while the 4-hour delta remains positive at +$2,920,684. Over the last 24 hours, the cumulative volume delta closed at +$33,339,646, with net buying occurring in 21 of the 24 hours.
The latest daily buy ratio of 50.1% sits at the 53rd percentile of the last 281 days, against a median of 50.0% - ordinary for this coin.
Was that an ordinary day?
The same Binance spot measurements for SOL, averaged over the days leading up to the story.
Over the preceding week, Solana saw a 7-day average buy ratio of 50.4%, with the latest day showing a 1.3 point increase over that average. Trading volume was 0.64x the average, and the price changed by -1.6% over the 8-day period. Net buying occurred on 3 of the 7 days, with a total volume delta of +$25,287,137 for the week. This represents a quieter trading environment compared to the 24-hour spot volume of $192,068,598.