supply-chain-attack

C&M Software (also styled CMSW) is a Brazilian financial technology company authorized by the Banco Central do Brasil to provide connectivity between smaller financial institutions and Brazil's national payment infrastructure, including the PIX instant-payment system. On June 30, 2025, hackers exploited credentials sold by an insider employee to drain approximately R$800 million (roughly USD 140–148 million) from reserve accounts of at least six financial institutions, in what became Brazil's largest recorded banking cyberattack. A portion of the stolen funds—estimated at USD 30–40 million—was subsequently laundered through Latin American OTC desks and crypto exchanges using Bitcoin, Ethereum, and Tether USDT, with on-chain investigator ZachXBT playing a central role in tracing and partially freezing the laundered assets.

Kiln is an institutional-grade, non-custodial staking infrastructure provider that manages over $14 billion in staked assets across 50+ proof-of-stake networks, including approximately 6% of the entire Ethereum validator set. In September 2025, Kiln suffered a sophisticated supply chain attack in which a threat actor compromised a GitHub access token belonging to a Kiln infrastructure engineer, injected malicious code into the Kiln Connect API, and caused the theft of approximately 192,600 SOL (~$41 million) from enterprise customer SwissBorg. The incident prompted Kiln to exit all 1.6 million ETH worth of its Ethereum validators as a precautionary measure, triggering the longest Ethereum exit queue backlog in the network's history.

Cointelegraph is a major legitimate cryptocurrency news outlet that has been a victim of two distinct infrastructure compromises. In January 2024, attackers breached its email service provider MailerLite and sent phishing emails to subscribers using Angel Drainer malware, resulting in estimated losses of $580,000 to over $700,000 across affected platforms. In June 2025, attackers separately compromised Cointelegraph's banner advertising system to serve Inferno Drainer-linked pop-ups promoting a fake CTG token airdrop to site visitors.