Rhysida claims 5.79TB data theft from Berlin government systems

🚨 ACTIVE EXPLOITATION

• Infostealers hijack Claude sessions to drain users’ account usage
  Infostealers are hijacking Claude sessions and consuming users’ account usage.
  • Claude users on Windows and a small number of Mac accounts are affected.
  • Stolen active Claude sessions let attackers access accounts and consume usage.
  • Infostealers capture authenticated browser sessions, login cookies, passwords and app credentials.
  • Anthropic linked cases to Vidar, LummaC2, StealC, RedLine, Acreed and Atomic Stealer (AMOS).
    📎 Coverage: bleepingcomputer.com · 👁 via BleepingComputer

💥 BREACHES & INCIDENTS

• Rhysida claims 5.79TB data theft from Berlin government systems
  Rhysida claims it stole 5.79 TB of data from Berlin government systems.
  • Berlin state government departments, including mobility, transport, environment and another Senate department, were affected.
  • Rhysida claims it took 5.79 TB across about 1.44 million files, including personal data, contracts, personnel records, passwords and government documents.
  • The group says the data includes 12,076 individuals, 16,389 email addresses, 11,963 phone numbers and 148 IBANs; the claims are unverified.
  • Investigators said data was exfiltrated between August 7 and 12; two department networks were shut down on August 14 after the intrusion.
  • Rhysida claimed responsibility on its dark-web leak site, demanded payment and threatened to auction the data for 30 bitcoin.
    📎 Coverage: reuters.com · 👁 via @metacurity@infosec.exchange

🔓 CVEs & KEV

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• CVE-2026-82644 — CVSS 8.7 — WWBN AVideo Brute-force Rate Limiting Bypass via Missing User-AgentWWBN AVide...

• CVE-2026-82648 — CVSS 7.1 — WWBN AVideo SSRF Filter Bypass via NAT64 Hex AddressWWBN AVideo contains a se...

• CVE-2026-82649 — CVSS 7.0 — SiYuan before 3.8.1 Local Privilege Escalation via Uncontrolled Search PathSi...

• CVE-2026-82652 — CVSS 6.9 — SiYuan before v3.8.1 Information Disclosure via Publish AccessSiYuan before v...

• CVE-2026-82651 — CVSS 6.9 — SiYuan before v3.8.1 Missing Authorization via /history and /repo/diffSiYuan ...

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📋 ADVISORIES

• 📄 Source for 19 Chrome and Edge Extensions Found Stealing Crypto and Browser Data — socket.dev