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Mozilla Revokes Firefox and Thunderbird Linux Signing Key After Key Lands in Private Repo
Mozilla revoked the Firefox and Thunderbird Linux RPM signing subkey after an unencrypted copy landed in a private repo; no unauthorized access found.
Mozilla revoked the OpenPGP signing subkey (fingerprint 09BE ED63 F346 2A2D FFAB 3B87 5ECB 6497 C1A2 0256) used for Firefox and Thunderbird Linux downloads after an unencrypted copy was committed to one of its private repositories, citing reason code 2, 'key material has been compromised.' Audit records showed no sign of unauthorized access, and a replacement subkey (827E 6586 0867 9618 CD34 9F93 678E 455D 7676 7AA3) valid until August 5, 2028 was published. Users who verify signatures manually or install from Mozilla RPM packages may need to import the new key and remove the old one. The rotation came roughly seven months ahead of Mozilla's usual two-year subkey cycle.
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iAuthFlow v2: The $10,000 Phishing Toolkit That Survives Your Password Reset
Abnormal Security details iAuthFlow v2, a $10,000 phishing kit that enrolls attacker-controlled passkeys on Google accounts, persisting through password resets.
Abnormal Security analyzed iAuthFlow v2, a phishing toolkit sold on a Russian-language cybercrime forum for a $10,000 base price with additional capability modules sold separately. Using a browser-in-the-middle relay behind a trycloudflare.com subdomain with valid TLS, it captures Google logins and uses the authenticated session to enroll an attacker-controlled passkey within six seconds of login. Because the passkey persists after password changes and session revocation, operators regain mailbox access even after victims reset credentials. The build examined targets Google, while the seller advertises versions for Microsoft, iCloud, and LinkedIn.
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KREMLIN Banking Malware Infects Over 1,500 Systems With Malicious Chrome Extension
Elastic tracks KREMLIN banking malware that used fake Brazilian bank JavaScript lures to deploy malicious Chrome and Edge extensions on 1,515 systems.
Elastic researchers tracked the KREMLIN banking malware operation across seven campaigns over 15 months, infecting 1,515 systems, 98.75% of them in Brazil. Portuguese-language lures posing as bank records and invoices deploy a hostile 'AVSync' extension into Chrome and Edge profiles that harvests passwords, session cookies, keystrokes and screenshots. Loaders check for sandboxes, create scheduled tasks and fetch fresh infrastructure from an Ethereum smart contract; a network canary takeover temporarily disrupted infections.
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50,000 Stripe Secrets Leaked in Public Code
Over 50,000 Stripe merchant API keys leaked via public code and logs; 659 merchant accounts' data offered on trading forum.
Ransomnews researchers identified over 50,000 unique Stripe merchant API keys exposed in public GitHub repositories, GitHub Actions logs, and misconfigured web servers. A dataset on a data-trading forum dated August 18, 2026 contained live keys for 659 merchant accounts plus roughly 35 GB of customer and payment data. Researchers demonstrated a leaked key enabled accessing customer lists, creating fraudulent payment links, and making test charges within 17 hours. Stripe itself was not compromised; over 3,000 misconfigured web servers revealed Stripe-related strings, with about 12% containing working keys.
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Google Password Manager Attacks Could Let Malware Hijack Passkey
Unit 42 details three attack paths letting Windows malware silently sign into passkey-protected accounts via Chrome's Google Password Manager without user verification.
Palo Alto Networks Unit 42 described three post-compromise attack paths—Pass-ta-key, Silver Pass-ta-key and Golden Pass-ta-key—against Chrome's Google Password Manager cloud authenticator on TPM-equipped Windows systems. The attacks can silently obtain valid authentication assertions, install attacker-controlled user-verification keys, or extract the 32-byte Security Domain Secret used to decrypt synced passkey private keys, enabling reusable access from the attacker's own environment. No CVE was assigned and no exploitation in the wild was reported; demonstrations were validated against Chrome 142 and parts of the architecture are corroborated by Chromium source. GitHub enforced the User Verified flag check, while eBay accepted a test assertion lacking it before fixing its validation gap after disclosure.
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