Coinbase just flagged major quantum computing risks for Proof-of-Stake blockchains, spotlighting Ethereum and Solana as vulnerable targets that could face cryptographic breakdowns without swift upgrades. The exchange's report warns that advancing quantum tech might shatter current encryption, echoing broader crypto quantum computing threats that have investors eyeing Bitcoin's Proof-of-Work resilience for comparison. This alert lands as the sector grapples with Proof-of-Stake vulnerabilities, potentially reshaping ETH price predictions in a volatile market.

Zooming into the 4h chart for ETH, price action clings to a bullish structure with the EMA50 at $2311.55 acting as immediate support just below the current $2316.13 mark, while the EMA200 at $2210.59 anchors longer-term upside conviction. Yet confluence screams caution—MACD's bearish death cross at -7.24 signals weakening momentum, and with RSI neutral at 48.61, we're trading snug inside Bollinger Bands where upper resistance at $2358.09 caps any quick rally. Expect a probe toward lower support at $2271.93 if volatility spikes, setting up a classic retest before bulls reclaim control amid these quantum risk headlines.