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Foundation Says Phishing Emails Sent Using Compromised Cloudflare API Keys

The company revoked the keys, removed the spoofed domain and then opened an investigation into whether attackers accessed support inboxes or customer data.

Overview

  • Foundation, which announced the issue on Oct. 26, traced fraudulent emails to one or more compromised Cloudflare API keys and revoked those keys while taking down the malicious domain.
  • CEO Zach Herbert said attackers likely exploited a vulnerability in a self‑hosted application and may have gained access to parts of Foundation’s backend, including the customer support inbox.
  • Recipients reported that the phishing messages included real names, shipping addresses and past purchase details and a former job applicant outside the customer base also received one of the emails.
  • Foundation says Passport hardware and the funds stored on it were not technically breached but warned users that authentic-looking emails and exposed personal data raise a high risk of social‑engineering attacks that can lead to stolen recovery phrases.
  • The company has not disclosed how many people were targeted or whether any recovery phrases were obtained and has pledged a formal incident report as its investigation continues, a development that follows other recent wallet-related phishing and data‑exposure incidents.