The Hacker News

Researchers uncover GhostPoster malware hidden in 17 Firefox add-ons with 50,000+ downloads. Disguised as VPNs, translators, and ad blockers. 50k+ installs. JavaScript was hidden inside logo images, activated after days, then hijacked links, tracked browsing, and ran ad fraud. 🔗 Read here → https://thehackernews.com/2025/12/ghostposter-malware-found-in-17-firefox.html

🛑 Amazon flagged a new AWS crypto-mining campaign using custom persistence techniques. Attackers validate permissions with DryRun, deploy miners across ECS and EC2, then enable instance termination protection to block cleanup. 🔗 Learn more: https://thehackernews.com/2025/12/compromised-iam-credentials-power-large.html

💰 A fake NuGet package stole crypto wallets for more than five years. It copied a popular .NET tracing library and hid as a normal dependency. One extra letter in the author name led to about 2,000 downloads since 2020. It exfiltrated Stratis wallet JSON files and passwords to a Russian IP. 🔗 Read: https://thehackernews.com/2025/12/rogue-nuget-package-poses-as-tracerfody.html

⚡ Amazon confirms a Russian GRU unit hacked Western energy and infrastructure networks for years. The threat wasn’t malware, it was silent credential theft from live traffic. From 2021–2025, APT44 relied less on zero-days and more on exposed routers and VPN gateways. 🔗 Read → https://thehackernews.com/2025/12/amazon-exposes-years-long-gru-cyber.html

⚠️ Most privacy risks aren't malicious. It’s accidental. A log statement. A helper function. An AI SDK someone added on Friday. If you only look in production, you’re blind by design. Read more → https://thehackernews.com/2025/12/why-data-security-and-privacy-need-to.html

🚨 Fortinet FortiGate devices are under active attack via SSO authentication bypass flaws. CVE-2025-59718 and CVE-2025-59719 both have CVSS scores of 9.8 and exploit the FortiCloud SSO feature. Disable FortiCloud SSO until systems are fully updated. 🔗 Details → https://thehackernews.com/2025/12/fortinet-fortigate-under-active-attack.html

Attackers are abusing React2Shell to plant Linux backdoors like KSwapDoor and ZnDoor. This hits orgs that left React and Next.js servers unpatched. Microsoft saw reverse shells, Cobalt Strike, and stolen cloud tokens tied to CVE-2025-55182, and Shadowserver tracks over 111,000 exposed IPs. 🔗 Details → https://thehackernews.com/2025/12/react2shell-vulnerability-actively.html

🔐 Google is shutting down its dark web monitoring tool less than two years after launch. Google admitted the tool surfaced breached data but didn’t give people clear next steps. Alerts without action paths don’t change outcomes. 🔗 Read here: https://thehackernews.com/2025/12/google-to-shut-down-dark-web-monitoring.html

🚨 WARNING: A “Featured” Chrome extension was silently copying everything users typed into ChatGPT and other AI tools. Prompts. Responses. Sent off-device by default after an auto-update. It even warned users about sharing sensitive info, while exporting the full chats itself. 🔗 Read: https://thehackernews.com/2025/12/featured-chrome-browser-extension.html

FreePBX’s worst flaw isn’t a bug — it’s a legacy setting. If AUTHTYPE is set to webserver, attackers can fake a login header and get admin access. From there, they can add their own user and run code on the system. Default configs are safe. Old tweaks aren’t. 🔗 Read: https://thehackernews.com/2025/12/freepbx-authentication-bypass-exposed.html

Sensitive data is everywhere: SaaS, cloud, AI pipelines, and most teams can’t see it. That’s why DSPM is becoming a top security priority for 2026. Next-gen DSPM goes beyond visibility→ real-time context, automation, and AI-aware protection. Learn more: https://thn.news/dspm-top-tools

⚡ Your SaaS wasn’t hacked. It was impersonated via the browser. Attackers ran clean, verified Chrome and Edge extensions for years. Millions of installs. One silent update flipped them into spyware. Not a device attack. Not a cloud breach. Both at once. The browser sat in the middle, unseen, holding the keys. 🔗 Learn more: https://thehackernews.com/2025/12/a-browser-extension-risk-guide-after.html