Extortionists send a Snowflake leak threat through ASOS's own app notifications

Jake Moore, global cybersecurity advisor at ESET, separated what the alert shows from what it claims. "The fact the hackers managed to send a push notification to customers suggests they have gained access to at least some of ASOS's connected systems, but it doesn't prove their full claims about the extent of the data breach," he said ^[5].

Sending a push and reading a Snowflake tenant are different jobs. Snowflake is a cloud platform for storing, managing, analysing and sharing large amounts of data ^[9]. A push notification needs a system with permission to message the app's users. Which system sent this one is not public. If the Snowflake tie is indirect, as Arntz describes ^[7], the instance the note refers to may sit on the vendor's side. Two readings fit, and neither is confirmed: the push came from a second foothold, or one marketing system both holds the data and sends the alerts.

Stolen credentials are the first suspect because of what happened before. In May 2024, attackers used credentials harvested by infostealer malware to log directly into customer Snowflake tenants that did not enforce multifactor authentication ^[11]. In August 2026, Wiz researchers found a critical script injection flaw in one of Snowflake's public GitHub repositories and reported it through Snowflake's HackerOne program ^[12]. That flaw was in Snowflake's own repository, a different class of problem from a stolen customer login. Neither event has been tied to ASOS. Until the entry route is known, this case does not show stolen platform credentials still working as a way in.

The note was addressed to "Asos DPO and IT" and told the company to engage or see the data leaked, yet it went to shoppers ^[3]. "By broadcasting their breach directly to ASOS app users, the threat actors are likely trying to apply pressure to ASOS, showing how extensive their access is so they can leverage some sort of ransom," Moore said ^[6].

Kamran Bahdur, CIO at FLR Spectron, said ASOS's first job is to establish whether there was any unauthorised access, review Snowflake audit and authentication logs and assess what data was exposed ^[13]. "Any decision on engaging with the threat actor should be made with input from legal, regulatory and law enforcement partners," he said ^[14].

For customers, the immediate risk is the link in the alert. Infosecurity Magazine advised app users not to click it or engage with the Telegram account, and to change their passwords ^[10]. Arntz described what a confirmed exposure would hold. "Any exposure could reveal a detailed customer picture, from browsing and buying habits to location and loyalty status. That's valuable profiling data, though the connection alone doesn't establish what attackers could actually access," he said ^[8].