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Adding to investor optimism, Coinbase saw over $1 billion worth of Bitcoin withdrawn on May 9, marking the highest net outflow recorded in 2025 so far, triggering analyst predictions of a supply-shock driven Bitcoin rally.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.
After stealing the data, the attackers attempted to extort $20 million worth of Bitcoin (BTC) from Coinbase in exchange for not disclosing the breach. Coinbase refused the demand.
Instead, the company offered a $20 million reward for information leading to the arrest and conviction of those responsible for the scheme.
$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On May 9, Coinbase saw 9,739 Bitcoin, worth more than $1 billion, withdrawn from the exchange, the highest net outflow recorded in 2025, according to Bitwise head of European research André Dragosch.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 X post.
The outflow occurred as Bitcoin traded above $103,600 and just days after the White House announced a 90-day reduction in reciprocal tariffs between the US and China, easing market concerns and lifting broader investor sentiment.
The 90-day suspension of additional tariffs removed the risk of “sudden re-escalation,” which may help Bitcoin, altcoins and the wider stock market rally due to improved risk appetite, Nansen’s principal research analyst, Aurelie Barthere, told Cointelegraph.
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 an X 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. Meanwhile, lenders earn yield from borrowers.
“With these milestones, Aave is proving its dominance in the Lending Space,” DeFi analyst Jonaso said in a May 12 X 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 (SOL) Trust ETF on the New York Stock Exchange (NYSE) to October 2025, according to a May 13 filing by the securities regulator.
The decision came the week after the SEC delayed its ruling on Canary Capital’s Litecoin (LTC) ETF, Bloomberg Intelligence analyst James Seyffart wrote in a May 5 X post.
Spot ETFs are key drivers of liquidity and institutional adoption for digital assets. For Bitcoin, the US spot Bitcoin ETFs accounted for an estimated 75% of new investment after launching, which helped BTC recapture the $50,000 mark in February 2024, a month after the ETFs debuted for trading.
While a Solana ETF may generate only a fraction of the inflows of Bitcoin ETFs, it could increase Solana’s institutional adoption in the long term by offering investors a “regulated investment vehicle” that may still attract billions of dollars in capital, Ryan Lee, chief analyst at Bitget Research, told Cointelegraph.
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.”
Starknet added that the framework was the “gold standard onchain tool for analyzing Ethereum scaling solutions,” and said it achieved the milestone through changes such as creating a security council and censorship-avoidance mechanisms.
While the system still allows intervention from a security council, it has implemented a fully functional validity proof system governed by smart contracts.
Starknet is now the only layer-2 ZK-rollup network to have reached Stage 1 and has grown to be the largest ZK-rollup blockchain with a total value locked of $629 million, just ahead of ZKsync’s $610 million, according to L2beat.
Starknet is the fifth-largest layer-2 network by value locked, with the top four all Optimistic rollup-based, having reached Stage 1 decentralization using fraud proofs.
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.
Thanks for reading our summary of this week’s most impactful DeFi developments. Join us next Friday for more stories, insights and education regarding this dynamically advancing space.
Thousands more Afghan nationals may have been affected by another data breach, the government has said.
Up to 3,700 Afghans brought to the UK between January and March 2024 have potentially been impacted as names, passport details and information from the Afghan Relocations and Assistance Policy has been compromised again, this time by a breach on a third party supplier used by the Ministry of Defence (MoD).
This was not an attack directly on the government but a cyber security incident on a sub-contractor named Inflite – The Jet Centre – an MoD supplier that provides ground handling services for flights at London Stansted Airport.
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July: UK spies exposed in Afghan data breach
The flights were used to bring Afghans to the UK, travel to routine military exercises, and official engagements. It was also used to fly British troops and government officials.
Those involved were informed of it on Friday afternoon by the MoD, marking the second time information about Afghan nationals relocated to the UK has been compromised.
It is understood former Tory ministers are also affected by the hack.
Earlier this year, it emerged that almost 7,000 Afghan nationals would have to be relocated to the UK following a massive data breach by the British military that successive governments tried to keep secret with a super-injunction.
Defence Secretary John Healey offered a “sincere apology” for the first data breach in a statement to the House of Commons, saying he was “deeply concerned about the lack of transparency” around the data breach, adding: “No government wishes to withhold information from the British public, from parliamentarians or the press in this manner.”
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July: Afghan interpreter ‘betrayed’ by UK govt
The previous Conservative government set up a secret scheme in 2023 to relocate Afghan nationals impacted by the data breach, but who were not eligible for an existing programme to relocate and help people who had worked for the British government in Afghanistan.
The mistake exposed personal details of close to 20,000 individuals, endangering them and their families, with as many as 100,000 people impacted in total.
Read more on Sky News:
Data breach victims sent spam emails
Afghan data leak timeline
MoD urged to reveal details of nuclear incident
A government spokesperson said of Friday’s latest breach: “We were recently notified that a third party sub-contractor to a supplier experienced a cyber security incident involving unauthorised access to a small number of its emails that contained basic personal information.
“We take data security extremely seriously and are going above and beyond our legal duties in informing all potentially affected individuals. The incident has not posed any threat to individuals’ safety, nor compromised any government systems.”
In a statement, Inflite – The Jet Centre confirmed the “data security incident” involving “unauthorised access to a limited number of company emails”.
“We have reported the incident to the Information Commissioner’s Office and have been actively working with the relevant UK cyber authorities, including the National Crime Agency and the National Cyber Security Centre, to support our investigation and response,” it said.
“We believe the scope of the incident was limited to email accounts only, however, as a precautionary measure, we have contacted our key stakeholders whose data may have been affected during the period of January to March 2024.”
BitMine and SharpLink are raising over $25 billion to expand Ether treasuries as US debt hits $37 trillion, fueling bullish crypto market sentiment.
The Federal Reserve said it would sunset a program specifically to monitor banks’ digital assets activities and would integrate them back into its “standard supervisory process.”
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