French Crypto Tax Platform Waltio Hit by 50,000-User Data Breach
French authorities have opened a preliminary investigation into a knowledge breach at Waltio, a cryptocurrency tax reporting platform used by tens of hundreds of traders.
This occurred when hackers reportedly bought entry to delicate consumer data and tried to blackmail the corporate.
The occasion has introduced up new points relating to the publicity of non-public information within the crypto trade, as goal fraud and bodily assaults towards holders have gotten an increasing number of frequent in France.
In a press release launched this week, French cybersecurity establishments confirmed that, by way of its cybercrime division, the Paris Public Prosecutor’s Office had issued an order to the National Cyber Unit of the Gendarmerie to determine the extent of the breach and establish uncovered customers.
Officials suggested that customers whose data may need been stolen ought to be cautious of scammers who declare to be real service suppliers or different officers and pressure them to surrender their digital belongings utilizing the stolen data.
The legislation enforcement businesses reported that some more moderen fraudsters posed as crypto companies, financial institution anti-fraud models, and even legislation enforcement officers and magistrates.
French newspaper Le Parisien stated that the assault at Waltio was related to a ransom demand by a hacking group referred to as Shiny Hunters.
The group purportedly had obtained private data of roughly 50,000 Waltio customers, most of whom reside in France, and mentioned it had samples of the stolen data as proof.
Waltio later filed a criticism of tried extortion and unauthorized entry to the automated information system.
Waltio mentioned its preliminary inside evaluation confirmed that the attackers accessed tax studies for the 2024 interval. These paperwork included customers’ electronic mail addresses, data on crypto income or losses, and asset balances on the finish of the 12 months.
The firm acknowledged that banking particulars, administrative information, and tax identification information weren’t affected and that its core infrastructure was not compromised.
Waltio added that its companies stay operational and that shopper funds are usually not in danger.
France Tightens Oversight After Crypto Data Breach Amid Rise in Kidnapping Cases
Waltio was based in France and is headquartered in Clermont-Ferrand. It serves roughly 150,000 customers and focuses on simplifying crypto tax compliance for European traders, significantly in France, Spain, and Belgium.
The platform aggregates transaction information from greater than 700 exchanges, wallets, and blockchains to calculate capital beneficial properties, losses, and staking earnings, and generates tax-compliant studies for native filings.
The investigation comes amid heightened scrutiny of crypto-related information leaks in France.
In the final 12 months, police have attributed plenty of dwelling invasions, kidnappings, and tried kidnappings to the criminals who meant to make use of the data of the victims having digital belongings.
Although the leakage of data has not been directly linked to these crimes, the investigation groups haven’t eradicated the probabilities of the information getting used to determine potential targets.
Masked gunmen steal crypto USB in France as prosecutors reveal tax official offered authorities database entry figuring out crypto traders to legal gangs for 800 euros per operation.#Crypto #Attack #Francehttps://t.co/GmfOkwsE6E
— Cryptonews.com (@cryptonews) January 9, 2026
Fraud victims have been cautioned to maintain proof, report back to the police, and tackle the information safety authority in France in situations the place they really feel that their private information has not been sufficiently safeguarded.
The Waltio incident is just not the primary case of information publicity within the crypto trade prior to now.
Hardware pockets producer Ledger announced earlier this month that a breach of a third-party cost processor, Global-e, happened, exposing the information of its prospects.
Last month, crypto tax software developer Koinly also notified users of a possible electronic mail information breach associated to using a third-party analytics platform.
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