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After the Break-In: What Attackers Do Once They're Already Inside

Attackers rarely stop after gaining initial access. Huntress analyzes a real-world intrusion to show how threat actors establish persistence, disable defenses, and reshape compromised systems, and why defenders must investigate the original entry point rather than simply remove the malware. [...]

https://www.bleepingcomputer.com/news/security/after-the-break-in-what-attackers-do-once-theyre-already-inside/
Microsoft Teams vishing attacks lead to Chaos ransomware attacks

Threat actors are impersonating IT support staff in Microsoft Teams calls to gain remote access to corporate devices and deploy Chaos ransomware in attacks targeting North American organizations. [...]

https://www.bleepingcomputer.com/news/security/microsoft-teams-vishing-attacks-lead-to-chaos-ransomware-attacks/
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Google says AI helped Chrome fix 1,072 security bugs in two releases

Google says artificial intelligence is dramatically increasing the number of security vulnerabilities it can find and fix in Chrome, with more than 1,000 security bugs patched across the browser's two most recent releases as it expands its use of AI. [...]

https://www.bleepingcomputer.com/news/google/google-says-ai-helped-chrome-fix-1-072-security-bugs-in-two-releases/
VMware fixes three critical flaws allowing auth bypass, VM escapes

Broadcom has released security updates to fix five vulnerabilities in VMware vCenter, ESX, Workstation, and Fusion, including three critical flaws that allow attackers to bypass authentication, execute arbitrary code, or escape from a virtual machine to the host. [...]

https://www.bleepingcomputer.com/news/security/vmware-fixes-three-critical-flaws-allowing-auth-bypass-vm-escapes/
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South Korea fines telco giant KT $39 million for customer data breach

South Korea's Personal Information Protection Commission (PIPC) has fined telecommunications giant KT Corporation KRW 53.979 billion ($39 million) over data protection violations. [...]

https://www.bleepingcomputer.com/news/security/south-korea-fines-telco-giant-kt-39-million-for-customer-data-breach/
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Anthropic's Claude breached 3 orgs, uploaded PyPI malware during tests

One of Anthropic's Claude models built and uploaded a malicious Python package to PyPI during a botched security evaluation, where it ran on 15 real systems and stole credentials from a security vendor. It was one of three incidents affecting real companies. [...]

https://www.bleepingcomputer.com/news/security/anthropics-claude-breached-3-orgs-uploaded-pypi-malware-during-tests/
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ESET tracks rise in malicious AI skills and adaptable malware

Attackers are adapting established techniques to AI platforms, emerging technologies, and changing user behavior. ESET's new threat report examines the rise of malicious AI skills, AI-assisted malware, ClickFix attacks, record quishing activity, and ransomware tools designed to disable security software. [...]

https://www.bleepingcomputer.com/news/security/eset-tracks-rise-in-malicious-ai-skills-and-adaptable-malware/
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CISA warns of cyberattacks disrupting U.S. water utilities

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) is warning of a significant increase in attacks targeting internet-exposed programmable logic controllers (PLCs) in the water and wastewater systems sector. [...]

https://www.bleepingcomputer.com/news/security/cisa-warns-of-cyberattacks-disrupting-us-water-utilities/
Hacker uses DeepSeek AI to autonomously attack vulnerable servers

A Chinese-speaking threat actor is using the DeepSeek AI model and the open-source Hermes Agent to conduct autonomous cyberattacks on exposed servers with limited human involvement. [...]

https://www.bleepingcomputer.com/news/security/hacker-uses-deepseek-ai-to-autonomously-attack-vulnerable-servers/
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Online ad firm Adform’s script compromised to steal cryptocurrency

Online advertising firm Adform suffered a supply-chain attack that delivered cryptocurrency-stealing scripts to websites using its ad platform, replacing wallet addresses copied to visitors' clipboards with ones controlled by an attacker. [...]

https://www.bleepingcomputer.com/news/security/online-ad-firm-adforms-script-compromised-to-steal-cryptocurrency/
Arch Linux disables AUR package adoption to stop malware flood

The Arch Linux project has temporarily disabled adoption of Arch User Repository (AUR) packages after a surge in malicious takeovers of existing packages. [...]

https://www.bleepingcomputer.com/news/security/arch-linux-disables-aur-package-adoption-to-stop-malware-flood/
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Amgen says cloud data breach exposed patient health, proprietary info

Pharmaceutical company Amgen says it suffered a data breach after threat actors stole corporate data and patient information stored in multiple cloud systems operated by third-party service providers. [...]

https://www.bleepingcomputer.com/news/security/amgen-says-cloud-data-breach-exposed-patient-health-proprietary-info/