"Coinbase Cyber Attack Fails, $1B Bitcoin Outflow Ignites Rally"

Bitcoin breaks out while Coinbase breaks down: Finance Redefined

News broke on May 15 that Coinbase was the target of a $20 million extortion attempt after cybercriminals recruited overseas support agents to leak user data for social engineering scams. While less than 1% of Coinbase’s active monthly users were reportedly affected, the expected remediation and reimbursement expenses range from $180 million to $400 million, as the exchange pledged to repay all phishing attack victims.

Despite the attack on the world’s third-largest cryptocurrency exchange, investor sentiment remains optimistic, with the Fear & Greed Index remaining firmly in the “Greed” zone above 69, according to CoinMarketCap data.

Adding to investor optimism, Coinbase saw over $1 billion worth of Bitcoin withdrawn on May 9, marking the highest net outflow recorded in 2025 so far, triggering analyst predictions of a supply-shock driven Bitcoin rally.

Coinbase faces $400 million bill after insider phishing attack

Coinbase was hit by a $20 million extortion attempt after cybercriminals recruited overseas support agents to leak user data, the company said on May 15. Coinbase said a group of external actors bribed and coordinated with several customer support contractors to access internal systems and steal limited user account data.

“These insiders abused their access to customer support systems to steal the account data for a small subset of customers,” Coinbase said, adding that no passwords, private keys, funds or Coinbase Prime accounts were affected. Less than 1% of Coinbase’s monthly transacting users’ data was affected by the attack, the company said.

$1 billion Bitcoin exits Coinbase in a day as analysts warn of supply shock

Institutional demand for Bitcoin is growing, as Coinbase, the world’s third-largest cryptocurrency exchange, recorded its highest daily outflows of Bitcoin in 2025 on May 9. On May 9, Coinbase saw 9,739 Bitcoin, worth more than $1 billion, withdrawn from the exchange, the highest net outflow recorded in 2025, according to Bitwise head of European research André Dragosch. “Institutional appetite for Bitcoin is accelerating,” Dragosch added in a May 13 post.

DeFi lender Aave reaches $40 billion in value locked onchain

Aave, a decentralized finance (DeFi) protocol, has reached a new record of funds onchain, according to data from DefiLlama. In a post, Aave said it topped $40.3 billion in total value locked (TVL) on May 12. Onchain data reveals that Aave v3, the latest version of the protocol, has about $40 billion in TVL.

Aave is a DeFi lending protocol that lets users borrow cryptocurrency by depositing other types of cryptocurrency as collateral. “With these milestones, Aave is proving its dominance in the Lending Space,” DeFi analyst Jonaso said in a May 12 post. TVL represents the total value of cryptocurrency deposited into a protocol’s smart contracts.

SEC delays Solana ETF as decisions for Polkadot, XRP loom

The US Securities and Exchange Commission (SEC) pushed back its decision on a proposed spot Solana exchange-traded fund (ETF), with the cryptocurrency industry now looking to the deadlines for the Polkadot and XRP-based ETFs in June. The SEC delayed its decision on listing Grayscale’s spot Solana Trust ETF on the New York Stock Exchange (NYSE) to October 2025, according to a filing by the securities regulator. Spot ETFs are key drivers of liquidity and institutional adoption for digital assets.

Starknet hits “Stage 1” decentralization, tops ZK-rollups for value locked

Ethereum layer-2 scaling platform Starknet has reached a decentralization milestone laid out by Ethereum co-founder Vitalik Buterin and is now the largest zero-knowledge rollup-based network by total value locked. Starknet said in a news release shared with Cointelegraph that it has hit “Stage 1” decentralization, according to a framework Buterin laid out in 2022, which means the network operates with limited oversight or “training wheels.”

DeFi market overview

According to data from Cointelegraph Markets Pro and TradingView, most of the 100 largest cryptocurrencies by market capitalization ended the week in the green. Solana-based memecoin Dogwifhat (WIF) rose over 43% as the week’s biggest gainer, followed by decentralized exchange Raydium’s (RAY) token, up nearly 19% over the past week.