class-action

Ledger SAS is a Paris-based hardware cryptocurrency wallet manufacturer founded in 2014, producing the Nano S and Nano X devices used by millions worldwide. Despite its status as a legitimate and established company, Ledger has been involved in two major security incidents: a 2020 customer database breach exposing over 1 million email addresses and 272,000 physical addresses, and a December 2023 supply chain attack on its @ledgerhq/connect-kit npm package that drained approximately $600,000–$850,000 from users of multiple DeFi protocols via the Angel Drainer malware-as-a-service. A third-party data breach via payment processor Global-e was disclosed in January 2026.

An unidentified threat actor or group breached LastPass in August–November 2022, exfiltrating encrypted customer password vaults containing cryptocurrency seed phrases and private keys stored by an estimated 25–30 million users. Beginning in late 2022 and continuing at least through late 2025, the actors allegedly cracked weak master passwords offline and drained cryptocurrency wallets in coordinated waves, with documented losses exceeding $250 million across hundreds of victims and a single high-profile $150 million XRP theft attributed to Ripple co-founder Chris Larsen. TRM Labs on-chain analysis and law enforcement investigations link the laundering activity to Russian cybercriminal infrastructure, including OFAC-sanctioned exchange Cryptex.

pump.fun (operated by Baton Corporation Ltd., also listed on AVOID.NET as 'pumpdotfun') is a Solana-based meme token launchpad that launched in January 2024 and rapidly became one of the most-used token creation platforms in crypto, generating over $800 million in cumulative revenue and more than 11.9 million tokens. The platform is subject to an active RICO class action lawsuit in the SDNY alleging up to $5.5 billion in retail losses, a UK FCA regulatory ban, a $1.9 million insider flash loan exploit, documented use by North Korea's Lazarus Group for money laundering, and independent research classifying 98.6% of its tokens as rug pulls or fraud.

pump.fun (operated by Baton Corporation Ltd., also listed on AVOID.NET as 'pumpdotfun') is a Solana-based meme token launchpad that launched in January 2024 and rapidly became one of the most-used token creation platforms in crypto, generating over $800 million in cumulative revenue and more than 11.9 million tokens. The platform is subject to an active RICO class action lawsuit in the SDNY alleging up to $5.5 billion in retail losses, a UK FCA regulatory ban, a $1.9 million insider flash loan exploit, documented use by North Korea's Lazarus Group for money laundering, and independent research classifying 98.6% of its tokens as rug pulls or fraud.

LastPass is a widely used password manager that suffered a catastrophic two-stage data breach in 2022, resulting in the theft of encrypted customer password vaults containing cryptocurrency seed phrases and private keys. Threat actors subsequently cracked these vaults offline over the following years, draining crypto wallets in waves totaling more than $438 million across hundreds of victims by late 2025. The breach has led to a £1.2 million UK ICO regulatory fine, a $24.45 million US class action settlement, US federal seizures, and on-chain attribution by TRM Labs and blockchain researcher ZachXBT to Russian cybercriminal infrastructure.

Bitcoin Depot was once the largest Bitcoin ATM operator in North America, operating more than 9,000 kiosks before filing for Chapter 11 bankruptcy on May 18, 2026. The company faces lawsuits from the attorneys general of Iowa and Massachusetts alleging it knowingly facilitated crypto scams, with one state finding that more than 80% of high-value transactions at its kiosks were linked to fraud. Multiple data breaches, a $3.6 million wallet theft, regulatory enforcement in California, and on-chain evidence flagged by ZachXBT further document systemic compliance and security failures.

Kroll Restructuring Administration LLC served as the court-appointed claims and noticing agent for the FTX, BlockFi, and Genesis bankruptcy proceedings. On August 19, 2023, a threat actor executed a SIM swap attack against a Kroll employee's T-Mobile account, gaining unauthorized access to files containing the personal data of tens of thousands of crypto bankruptcy claimants. The exposed data was subsequently exploited in large-scale phishing and social engineering campaigns, with blockchain investigator ZachXBT estimating total losses attributable to the breach at eight to nine figures, and at least one alleged perpetrator — Danish Zulfiqar, also known as 'Danny' — was arrested in Dubai in late 2025 on RICO charges related to a broader $263 million social engineering conspiracy.

Transak is a fiat-to-crypto on-ramp infrastructure provider founded in 2019 and serving over 8 million users across 160+ countries, with integrations into major platforms including MetaMask, Phantom, and Uniswap. In October 2024, a phishing attack on an employee's laptop led to unauthorized access to a third-party KYC vendor's dashboard, exposing the personal identity documents of approximately 92,554 users globally, including names, dates of birth, government-issued IDs, and selfie photos. The breach resulted in a $601,000 class action settlement covering U.S.-based affected users, and the Stormous ransomware group claimed responsibility, alleging extraction of over 300GB of data.