SecureList

JULY 21, 2025

This is a Chinese-speaking cyberespionage group known for targeting organizations across multiple sectors, including telecom and energy providers, educational institutions, healthcare organizations and IT energy companies in at least 42 countries. 9 38.175.195[.]13 13 hxxp://github[.]githubassets[.]net/okaqbfk867hmx2tvqxhc8zyq9fy694gf/hta

Energy and Utilities 98

Energy and Utilities Accountability Data collection Encryption 98

Security Affairs

JUNE 24, 2021

Chashell is a reverse shell over DNS provider, while Chisel is a port-forwarding tool. “Healthcare and education organizations also host large volumes of sensitive data, making them more valuable targets. The name ChaChi comes from two key components of the malware, Cha shell and Chi sel. ” .

Ransomware 145

Ransomware Education DNS Backups 145

Webroot

APRIL 13, 2021

Ransomware attacks generate big headlines when the targets are government entities, universities and healthcare organizations. This includes essential security measures like firewalls, endpoint protection and DNS protection. But there’s one increasingly frequent target of ransomware attacks that tends to slip under the radar.

Ransomware 133

Ransomware DNS Firewall Security Awareness 133

Webroot

MAY 6, 2024

For businesses, this means implementing a comprehensive incident response plan that includes secure, immutable backups and regular testing to ensure rapid recovery in the event of an attack. Combine antivirus tools with DNS protection, endpoint monitoring, and user training for comprehensive protection.

Antivirus 126

Antivirus Phishing Cyber threats Education 126

Veracode Security

NOVEMBER 19, 2020

In late October, the Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), and the Department of Health and Human Services (HHS) co-authored an advisory report on the latest tactics used by cybercriminals to target the Healthcare and Public Health (HPH) sector. C:WindowsSysWOW64. Because it???s

Healthcare 52

Healthcare Ransomware Phishing Social Engineering 52

IT Security Guru

AUGUST 16, 2021

Pervasive attacks against healthcare, local government, schools and other forms of critical infrastructure are threatening our quality and safety of life every day. Ransomware is a crime that is predominantly financially motivated, yet the effects of attacks are far broader and more profound than just the financial impact.

Ransomware 133

Ransomware Government Healthcare Education 133

eSecurity Planet

MAY 2, 2024

50,000 DDoS attacks on public domain name service (DNS) resolvers. 553% increase in DNS Flood attacks from 1H 2020 to 2H 2023. DDoS attacks on single networks or websites render them unavailable, but DDoS attacks on DNS resolvers bring down all networks and websites using that DNS resource. 54% on-prem infrastructure.

Cybersecurity 116

Cybersecurity DDOS Penetration Testing Ransomware 116