Endpoint Security

Cybersecurity
Coldcard Firmware Flaw Linked to $88.6M Bitcoin Sweep
A Coldcard firmware flaw that sent seed generation to a software PRNG is tied to an $88.6 million Bitcoin sweep across 4,585 drained wallet addresses.
CVE Vulnerability Alerts
N-able Warns Attackers Reached Managed Endpoints via N-central Flaw
N-able warns attackers exploited CVE-2026-18577 to take over N-central servers and reach managed endpoints, planting Cloudflare tunnels for persistent access.
Cybersecurity
DPRK macOS Malvertising Uses ClickFix to Steal Wallets and Cloud Keys
North Korea-linked actors use fake macOS update pages and ClickFix prompts to deploy malware that drains crypto wallets and steals SSH, AWS, and Azure keys.
Application Security
AnySign4PC Zero-Day Watering Holes Hit 72 South Korean Organizations
A state-sponsored campaign used hacked South Korean websites to exploit an AnySign4PC zero-day and infect visitors with SIGNBT and COPPERHEDGE backdoors.
Cybersecurity
Silver Fox BYOVD Chain Deploys ValleyRAT at Japanese Manufacturer
Silver Fox used a new three-driver BYOVD attack chain and dual watchdog persistence to deliver ValleyRAT at a Japanese manufacturer through invoice lures.
Cybersecurity
Fengwo Group Ad-Fraud Uses TV Sticks That Spoof as Phones
Bitsight found generic TV streaming sticks spoofing as phones and clicking ads on AI-generated sites in a Fengwo Group ad-fraud network worth $50,000 a day.
Cybersecurity
Nimbus Manticore Deploys NightLedger Backdoor Across Three Regions
Iran-linked Nimbus Manticore deployed the new NightLedger backdoor and WebSocket tunnelers against targets in the Middle East, Africa, and South Asia.
Cybersecurity
Tengu Botnet Reboots Devices via Hardware Watchdog to Evade Removal
Tengu, a new Mirai-derived Linux IoT botnet, triggers device reboots via hardware watchdog when defenders kill its process, supporting 25 DDoS methods.
Cybersecurity
Flying Eagle Android RAT Leaks on Telegram, 170 C2 Servers Active
Flying Eagle Android RAT source code is on Telegram; researchers traced matching panels to 170 servers targeting Chinese users via a fake government app.
Application Security
@joyfill npm Beta Packages Deploy DEV#POPPER RAT on Import
Two @joyfill npm beta packages were compromised to deliver DEV#POPPER RAT on import, risking credential theft and persistent access on developers' machines.