Syndicate Labs has confirmed that a leaked upgrade key let an attacker hijack its Commons cross-chain bridge, drain about 18.5 million SYND tokens worth roughly $330,000 plus user funds, and trigger a sharp price crash before the team pledged full compensation and sweeping security fixes.

Syndicate Labs has confirmed that a private key leak allowed an attacker to maliciously upgrade its cross-chain bridge contracts on two networks and siphon approximately 18.5 million SYND, worth about $330,000, alongside roughly $50,000 in user tokens. The team stressed that the incident was contained to specific chains and did not impact the broader Syndicate infrastructure.

In an official statement, Syndicate Labs said the breach followed “multi-stage reconnaissance, infrastructure mapping, and careful execution,” calling it an attack that “demonstrated a high level of technical complexity” while explicitly ruling out insider involvement. The attacker acquired around 18.5 million SYND and rapidly sold the tokens, with external security firms like CertiK tracing proceeds into Ethereum after bridging.

Root cause: weak key storage and upgrade controls

Syndicate Labs identified the root cause as poor operational security around the bridge upgrade keys, admitting that “the private key was stored in a password management tool without an additional layer of encryption.” The team also acknowledged that the upgrade process did not use multi-signature or hardware signatures and lacked “early warning and circuit breaker measures for contract upgrades,” leaving a single compromised key enough to push a malicious implementation.

Following the exploit, SYND’s price fell by more than 30% on some venues as the sell-off hit liquidity, echoing previous bridge hacks that sparked sharp token drawdowns. Similar cross-chain bridge incidents, such as earlier exploits on third-party infrastructure covered in this crypto.news story, have repeatedly underscored the dangers of centralized upgrade keys.

Syndicate Labs has pledged to “fully compensate all affected users,” including returning the 18.5 million SYND drained and providing “additional compensation,” while also “fully compensating affected application chain clients.” The company says it has sufficient reserves to cover losses, mirroring commitments seen in prior DeFi recovery efforts reported in another crypto.news story.

To prevent a repeat, Syndicate Labs has begun hardening its key management by strengthening private key encryption, tightening access controls, and planning to introduce hardware or multi-signature mechanisms alongside real-time monitoring of upgrade paths. The team’s roadmap follows broader industry calls for multisig-controlled bridges and automated circuit breakers, themes highlighted in a separate crypto.news story.

Syndicate’s SYND token remains under pressure as markets digest the attack and await concrete timelines for compensation and security upgrades.

Kevin Hassett warns that reappointing Jerome Powell to the Fed Board could delay or dilute Trump-era rate cuts, keeping crypto traders fixated on personnel-driven monetary policy.

White House National Economic Council Director Kevin Hassett said that Federal Reserve Chair Jerome Powell’s reappointment as a governor “may affect interest rate cut decisions,” injecting new uncertainty into the path of U.S. monetary easing. His comments land just as the Fed keeps its target rate in a 3.5%-3.75% band and as Powell chairs his final policy meetings before stepping down in mid-May.

In recent remarks relayed by U.S. media, Hassett has repeatedly argued that “there is ample opportunity to reduce rates in the upcoming months,” while also acknowledging that the composition of the Fed Board will shape how aggressively cuts are delivered. At Powell’s last meeting as chair, officials again voted to hold rates steady, with four members dissenting—the highest level of disagreement since 1992—underscoring a deeply divided Federal Open Market Committee (FOMC).

Why Powell’s seat matters for crypto

The friction is not just academic: Powell’s reappointment as a governor would keep a seasoned moderate on the Board at the same time President Donald Trump is set to install Kevin Warsh as the next Fed chair, a figure seen as more open to faster easing but constrained by inflation and politics. As Axios reported, Trump officials have recently “softened” their public pressure for immediate cuts, signaling they may “wait for new chairman Warsh and let him lead the next cycle,” a stance Hassett has echoed.

For crypto markets, this tug-of-war over the pace of cuts directly feeds into liquidity, risk appetite, and dollar strength. When the Fed cut rates in late 2025, Bitcoin (BTC) and Ethereum (ETH) both saw renewed inflows as lower real yields pushed investors out the risk curve, a pattern tracked across multiple crypto.news stories. With the federal funds rate still anchored at 3.5%-3.75% and no cuts yet in 2026, major tokens have traded in tighter ranges despite sporadic rallies in Bitcoin and Ethereum.

If Powell’s continued presence tilts the Board toward a slower easing path, that could cap near-term upside for high-beta assets like altcoins even as long-term crypto adoption remains intact. Prior crypto.news coverage of Fed transition risks in this story and of macro-driven sell-offs in another story has shown how quickly Bitcoin and DeFi tokens can reprice when rate expectations shift.

Traders are now closely watching communications from Hassett, Warsh, and Powell for clues on the first cut’s timing, with futures markets still pricing only modest reductions in 2026 despite Trump’s preference for “substantially lower” rates. Any surprise acceleration or delay in cuts—driven by Powell’s reappointment dynamics—will likely move not just Treasurys and equities, but also the entire digital asset complex.

Stablecoin payments company Kast Kast has hired former US Securities and Exchange Commission (SEC) communications official Stephanie Allen as head of corporate and policy communications, as the company builds out its licensing and policy operation following an $80 million funding round last month.

Kast said Thursday that Allen will work with senior leadership on policy and communications as the company prepares to launch Kast Business and expand further across North America, Latin America and the Middle East. The company said the hire is tied to its next phase of growth and regulatory engagement.

Allen previously served as acting director of the SEC’s Office of Public Affairs and earlier held senior media relations and speechwriting roles at the agency. Kast said she also advised the SEC’s Crypto Task Force, though that role does not appear in the SEC’s public biography of Allen.

The hire reflects how stablecoin companies are adding policy and communications talent as they move closer to regulated financial services and try to expand across multiple jurisdictions. For Kast, the appointment comes as it pushes deeper into business accounts, cross-border payments and compliance-heavy growth markets.

“We’re excited to welcome Stephanie to the Kast team,” said KAST’s chief corporate affairs officer, Brad Jaffe. “Her knowledge of the policy and regulatory landscape stemming from her leadership position at the SEC and deep U.S. public and private sector experience will help drive KAST’s momentum.”

The hire comes over a month after Kast raised $80 million to fund the expansion of its payment infrastructure platform, reaching a $600 million valuation.

KAST stablecoin payment firm, homepage. Source: Kast.xyz

Kast offers payment cards and US dollar-denominated accounts to users in over 150 countries, with plans to launch savings and remittance products under its neobank interface. 

Related: Fireblocks launches tool for institutions to earn yield on stablecoins

Stablecoin momentum cools

Stablecoin transfer volume dropped 19% to $8.31 trillion over the past month, while stablecoin market capitalization rose 2.06% to $305.29 billion over the same period, Cointelegraph reported Tuesday, citing data from RWA.xyz.

The data suggests that the growing value held in dollar-denominated stablecoins does not translate to growing onchain activity, as fewer dollars are being moved across blockchains despite the growing stablecoin supply.

30-day stablecoin net flows as of April 28, 2026. Source: RWA.xyz

Still, asset manager Fidelity’s Q2 Signals Report showed that Ethereum’s stablecoin transfer values had recently exceeded historical averages, with transfer value over the past 12 months surpassing $18 trillion. 

Fidelity said that the network activity signals that stablecoins are increasingly being used for payments, settlement and onchain access to US dollars, despite the broader crypto market sentiment.

Stablecoin transfer volume reached a record $1.8 trillion in February, according to data provider Allium. 

Magazine: Will the CLARITY Act be good — or bad — for DeFi?

Cointelegraph is committed to independent, transparent journalism. This news article is produced in accordance with Cointelegraph’s Editorial Policy and aims to provide accurate and timely information. Readers are encouraged to verify information independently.

Polymarket is rolling out an onchain integrity monitor with Chainalysis to detect insider trading and manipulation across its prediction markets and reassure regulators and institutions.

Polymarket has unveiled a comprehensive on-chain market integrity monitoring solution designed to track trading behavior across its platform and enforce strict market conduct rules. The system is being developed in partnership with blockchain analytics firm Chainalysis and will cover the full DeFi lifecycle on Polymarket, including real-time analysis of trading flows, user holdings, and settlement data, with a particular emphasis on detecting insider trading and market manipulation.

According to Polymarket, every transaction on the platform already settles on a public blockchain, and this new framework is meant to weaponize that transparency rather than treat it as a mere byproduct. By layering multi-stage monitoring over open ledgers, the platform aims to automatically surface anomalous patterns—such as suspiciously timed position builds ahead of key events or coordinated wash trading—so they can be investigated and sanctioned under its market rules.

The company stresses that the collaboration is also aimed at external stakeholders, not just internal policing. Because activity is on-chain, the enhanced monitoring is expected to help regulators and law enforcement obtain verifiable evidence of misconduct, potentially speeding up investigations and making enforcement more robust. Polymarket says this combined toolkit is intended to establish “a new compliance standard in the predictive market field,” framing the platform less as a regulatory outlier and more as a testbed for transparent, auditable market structure.

Founder and CEO Shayne Coplan reiterated that the platform has prioritized transparency and traceability since launch, arguing that prediction markets can only influence serious capital and institutional users if their order flow is both visible and credibly monitored. He said the Chainalysis partnership will further entrench Polymarket’s position as a “trusted source of market information,” especially as crypto-native prediction markets increasingly inform pricing in broader risk assets, including equities, rates, and major tokens like Bitcoin and Ethereum.

The US Senate on Thursday unanimously approved a resolution banning its members and staff, who are often exposed to sensitive information, from using prediction markets.

The resolution, passed by unanimous consent, changed the Senate’s rules and took immediate effect. 

“Engaging in any way in a prediction market or trying to place bets where we might have inside information deteriorates the confidence that our constituents have in us,” Republican Senator Bernie Moreno, who introduced the resolution, said on the Senate floor.

“By changing the standing rules of the Senate, what we’re doing is allowing our constituents to know, once and for all, that no member of the United States Senate, no member of the staff of the United States Senate, can ever use that inside information as a way to monetize this job whatsoever,” he added.

Source: Bernie Moreno

The resolution comes after a special forces soldier involved in the plan to capture former Venezuelan President Nicolás Maduro was charged last week, on April 23, with using classified information to make bets on Polymarket, as lawmakers also air concerns over well-timed bets on the Iran war. He has pleaded not guilty. 

Senate Democratic leader Chuck Schumer said on the Senate floor that “of all the issues we debate in Washington, this falls clearly in the category of a ‘no-brainer.’”

“We must never allow Congress to turn into a casino where members representing the public can gamble on wars, or economic crises, or elections,” he said.

Related: Insider trading backlash forces Polymarket to step up surveillance

“We should go further; this is a good start, but not enough,” Schumer said. “The administration and its employees must apply these very same rules too, particularly this administration, which shows such a troubling affinity to corruption and self-dealing.”

Republican Representative Ashley Hinson posted to X that she would introduce a similar resolution to ban the use of prediction markets in the House.

Polymarket posted on X that it fully supported the Senate resolution and its terms of service “already prohibit such conduct, but codifying this into law is a step forward for the industry.”

Tarek Mansour, co-founder and CEO of rival prediction market platform Kalshi, also celebrated the resolution in a post on X, adding that it “already proactively blocks members of Congress and enforces against insider trading.”

Magazine: How to fix suspected insider trading on Polymarket and Kalshi

Cointelegraph is committed to independent, transparent journalism. This news article is produced in accordance with Cointelegraph’s Editorial Policy and aims to provide accurate and timely information. Readers are encouraged to verify information independently.

Spain appears to be the strongest retail market for Circle’s euro-pegged stablecoin EURC on the Brighty platform, with Brighty data indicating a clear regional concentration in 2025 and the first quarter of 2026. In that period, Spanish activity accounted for roughly 36% of EURC transactions and about 25% of EURC-related volume, a signal that euro-stablecoin usage for everyday payments is taking hold in select European markets. According to Brighty data reviewed by Cointelegraph, this pattern positions Spain as a leading early adopter in euro-stablecoin retail usage within the broader MiCA-era regulatory landscape.

“For Spanish users, EURC functions essentially as a standard euro on a card with no exchange rate friction when transacting against USDC,” Brighty co-founder Nick Denisenko said. The observation underscores how EURC can simplify euro-denominated payments for retail customers, particularly when paired with card-based spending and stablecoin yield features.

Cointelegraph’s review of Brighty’s dataset also highlights a broader market dynamic: euro tokens remain a minority segment relative to USD-pegged stablecoins like Tether’s USDt and Circle’s USDC, even as policymakers push to expand the euro’s role in crypto markets. The data offer an early glimpse into how euro stablecoins may be used in European retail payments as regulatory frameworks like MiCA come into force.

Key takeaways

• Spain accounted for about 36% of EURC transactions and 25% of EURC volume in 2025 through the first quarter of 2026, signaling a retail-oriented adoption pattern.
• EURC is the largest euro-pegged stablecoin by market share, representing around 49% of the euro-stablecoin market cap (approximately $887 million) according to CoinGecko.
• Spain shows the clearest retail usage of EURC with low average transaction sizes—about 49 euros per payment—compared with other European markets that display more mix between retail and higher-value transfers.
• Italy ranks second in EURC activity (about 15.5% of transactions and 18% of volume), followed by Germany (roughly 13% of transactions and 19% of volume), while France is notable for higher average transactions (~€171).
• Denisenko argues that Spain’s combination of early adoption, retail-focused usage, and broad institutional awareness makes it the clearest early hub for euro-stablecoin activity under MiCA.

Spain as a retail EURC hub

Data from Brighty shows Spain leading EURC activity within the platform’s footprint, with a clear tilt toward everyday, low-value transactions. The typical EURC payment in Spain is around €49, placing the euro-stablecoin usage squarely in the realm of consumer purchases, P2P transfers, and other retail payments rather than large-scale transfers or institutional settlements.

Denisenko notes that Spanish users have been among the earliest adopters of EURC on Brighty and have shown robust engagement with yield features tied to stablecoins. This combination—early adoption, retail-friendly transaction sizes, and active use of yield mechanics—helps explain why Spain stands out in Brighty’s euro-stablecoin analytics.

From a regulatory and market-structure perspective, the Spanish pattern aligns with a broader intention to normalize euro-stablecoin usage within a MiCA-ready environment. The MiCA framework seeks to bring regulatory clarity to crypto-asset service providers and issuers of asset-backed tokens in the European Union, potentially smoothing the path for banks and payments ecosystems to integrate euro-stablecoins into everyday retail flows.

Cross-country usage patterns and value segmentation

Italy ranks second in Brighty’s EURC metrics, accounting for about 15.5% of EURC transactions and 18% of EURC volume. The data imply a mix of retail and higher-value use cases in Italy, rather than a narrow retail-only pattern. Germany follows with roughly 13% of transactions and 19% of volume, where the average EURC payment size stands at about €105 ($123).

France stands out for its comparatively higher average transaction size of roughly €171 ($186) per EURC payment, indicating a greater share of larger transfers or higher-value payments within the country’s EURC activity. This contrast suggests a diversification of EURC use cases across Europe, from everyday consumer purchases to larger-value transfers that may involve corporate or high-net-worth clients.

Despite these country-specific dynamics, euro-stablecoins in Europe remain a relatively small slice of the broader stablecoin market when viewed against USD-pegged tokens. The euro-stablecoin segment’s total market capitalization sits well below the USD-backed tier, a gap that policymakers and market participants have been monitoring as MiCA implementation progresses and as banks explore euro-stablecoin integrations.

Regulatory and institutional implications for euro-stablecoins in Europe

The Spain-centric retail pattern observed on Brighty has notable implications for compliance, licensing, and cross-border operations within the European Union. Under MiCA, euro-stablecoins face a regulated environment designed to standardize issuance, disclosures, and safeguarding of user funds, with potential licensing prerequisites for issuers and service providers operating across member states. Spain’s apparent readiness—both from consumer familiarity with crypto and from the apparent willingness of local banks to engage with euro-stablecoins—could serve as a case study in how MiCA compliance and banking integration might unfold in practice.

Brighty’s experience in Spain, including interactions with major Spanish banks where staff demonstrate a high level of competence, suggests that institutional readiness may accelerate the deployment of euro-stablecoin-based payments and yield features for retail users. This aligns with a broader European push to expand the euro’s role in digital finance while maintaining robust regulatory oversight and consumer protections.

Where EURC and other euro-stablecoins fit within the MiCA framework remains a key question for operators, banks, and policymakers. The ongoing evolution of licensing regimes, cross-border oversight, and interoperability with fiat rails will shape how euro-stablecoins scale in retail channels. The comparative patterns across Italy, Germany, and France provide a preliminary map of how different market segments may respond to MiCA’s regulatory contours, with Spain potentially serving as an early operational benchmark for compliance-ready, retail-focused euro-stablecoin activity.

Closing perspective

The Brighty dataset paints a valuable early picture: Spain stands out as the clearest retail-focused hub for EURC within Europe, reflecting a combination of consumer familiarity, institutional readiness, and a regulatory environment moving toward MiCA-aligned clarity. As MiCA-backed euro-stablecoins continue to gain traction, observers should monitor how cross-border EU usage develops, how banks expand euro-stablecoin integrations, and how transaction sizes and channel mix evolve beyond Spain’s initial lead. The coming quarters will reveal whether Spain’s early lead translates into broader regional patterns or remains a selective, country-specific anomaly shaped by local financial ecosystems.

Key Takeaways

• Nvidia shares declined over 4% Thursday even as major tech companies announced significant AI infrastructure spending hikes
• Google revealed intentions to commercialize its proprietary TPU chips for external clients, intensifying competitive pressures
• Amazon highlighted accelerating growth in its proprietary chip division
• Top four hyperscalers collectively plan AI infrastructure investments reaching $725 billion in 2026
• Nvidia’s B300 server pricing in China has surged to approximately $1 million following stricter smuggling enforcement

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Nvidia shares tumbled over 4% Thursday, defying the broader narrative of explosive AI infrastructure spending commitments from technology’s biggest players. The decline signals mounting investor anxiety about a critical question: can Nvidia maintain its market leadership as its largest clients develop competing chip solutions?

NVIDIA Corporation, NVDA

The downturn followed earnings reports from Meta, Alphabet, Microsoft, and Amazon, each announcing elevated capital expenditure forecasts for 2026. Meta increased its projection by $10 billion, targeting a range of $125 billion to $145 billion. Alphabet boosted its guidance by $5 billion, potentially reaching $190 billion. Microsoft indicated its fourth-quarter capital spending alone would exceed $40 billion.

Combined, these four cloud computing giants are projected to deploy up to $725 billion on AI infrastructure throughout the year. With Nvidia commanding approximately 90% of the AI accelerator market, this investment wave should theoretically benefit the semiconductor manufacturer substantially.

Yet market sentiment doesn’t always align with positive fundamentals.

Alphabet’s TPU Commercialization Triggers Market Concerns

Investor apprehension stemmed primarily from Alphabet’s strategic announcement. The company disclosed plans to market its proprietary Tensor Processing Units — TPUs — to external clients who can deploy them within their own infrastructure environments.

Historically, TPUs functioned exclusively within Google‘s ecosystem. By commercializing these chips, Alphabet positions them as a viable, albeit specialized, competitor to Nvidia’s GPU offerings. While TPUs typically lack the versatility of Nvidia’s solutions, they deliver superior cost efficiency for specific artificial intelligence applications.

Amazon similarly emphasized expansion in its proprietary chip initiatives during its quarterly earnings presentation. While both organizations remain significant Nvidia clients, the strategic trajectory is unmistakable.

Nvidia has historically downplayed threats from custom chip development, emphasizing the superior versatility its GPUs provide for AI application developers. However, maintaining this position without encountering market skepticism is becoming increasingly challenging.

Chinese Market Sees B300 Server Prices Approach $1 Million Mark

On supply dynamics, pricing for Nvidia’s advanced B300 server systems in China has escalated to approximately 7 million yuan, representing a sharp increase from roughly 4 million yuan in late 2024. This translates to nearly $1 million per system.

Intensified enforcement against semiconductor smuggling operations in China — which previously sustained a parallel market for export-restricted hardware — has substantially constrained available supply. The B300 represents one of Nvidia’s most sophisticated AI server configurations and remains subject to US export restrictions in the Chinese market.

Meanwhile, Thursday’s trading session delivered mixed results across the semiconductor industry. Qualcomm surged 9% following announcements of expanded data center initiatives. Memory sector players Sandisk, Western Digital, and Seagate also posted gains after Microsoft and Meta highlighted increasing expenditures for storage and memory infrastructure.

Regarding investment activity, Nvidia’s venture division NVentures contributed to a $50 million extension of Swedish AI legal technology company Legora’s Series D funding round, establishing a $5.6 billion valuation and bringing aggregate capital raised to $600 million.

Nvidia shares were trading near $200.84 Thursday afternoon, representing an approximate $8.41 decline for the session.

TRM Labs says North Korea-linked hackers have stolen about $577m in 2026 so far—76% of all crypto hack losses—driven by massive hits on KelpDAO and Drift Protocol.

A new report from blockchain intelligence firm TRM Labs finds that organizations linked to North Korea were responsible for roughly 76% of all global cryptocurrency hacking losses in the first four months of 2026, stealing an estimated $577 million. The report, cited by The Block, warns that North Korean operations have become the dominant source of on-chain theft as state-aligned groups refine their tactics against exchanges, DeFi protocols, and cross-chain infrastructure.

According to the analysis, North Korea’s share of global crypto theft has climbed relentlessly over the past five years: 22% in 2022, 37% in 2023, 39% in 2024, 64% in 2025, and 76% so far in 2026, pushing cumulative illicit profits since 2017 above $6 billion. TRM Labs ties this growth to increasingly sophisticated tooling, better laundering pipelines, and a clear state incentive to bypass traditional sanctions via digital assets.

The report highlights two April incidents as the primary drivers of 2026 losses to date: a roughly $292 million exploit targeting KelpDAO and a separate $285 million theft from Drift Protocol. Together, these two attacks alone account for nearly the entire $577 million total so far this year and about 3% of all recorded hacking incidents in the same period, suggesting that a small number of high-impact exploits continue to dominate loss statistics.

For crypto markets, the concentration of large-scale thefts in DeFi and restaking protocols underscores the structural risk in smart contract and bridge design. Each $200 million–plus drain not only hits token prices for the affected projects, but also tightens liquidity across interconnected ecosystems as market makers, lenders, and LPs de-risk exposure.

This trend also feeds into regulatory and institutional responses. As more of the loss profile is attributed to a single sanctioned state, global authorities will likely intensify pressure on centralized exchanges, OTC desks, and mixers to block known laundering channels, raising compliance costs for the entire industry. For traders in Bitcoin, Ethereum, and other majors, repeated headlines of nine-figure hacks tied to North Korea translate into higher perceived tail risk, wider risk premia, and occasional systemic bouts of deleveraging when large exploits force on-chain liquidations.

Overall, TRM Labs’ findings paint a picture of a crypto market where protocol innovation and capital inflows continue, but where the “crypto war chest” of a sanctioned state is now a central macro variable, not a side story—one that will increasingly shape both policy and risk pricing across digital assets.