The Malware tag covers malware families, infrastructure analysis, incident impact, disruption efforts, and defensive guidance to reduce cybersecurity risk.
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Background for this topic.
Malware is software intentionally created or modified to perform unauthorized or harmful actions on a computer, device, or network. The term covers distinct families and functions, including viruses, worms, trojans, spyware, botnet clients, and ransomware; a single sample may combine several capabilities. Its behavior—not its label—determines the security concern: it may execute code, persist, alter or encrypt data, steal credentials, or provide unauthorized remote access.
For practitioners, malware reporting is most useful when it identifies the family or tool conservatively and provides evidence such as affected platforms, samples, infrastructure, or observed behavior. Defenses include promptly patching vulnerable software, restricting execution and privileges, monitoring endpoints and networks, maintaining tested backups, and isolating suspected systems for analysis. Detection should use behavior and verified indicators rather than names alone, since variants change. If malware processes personal or regulated data, investigations should also address privacy, evidence preservation, and applicable reporting obligations.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has shed light on a new malware called RESURGE that has been deployed as part of exploitation activity targeting a now-patched security flaw in Ivanti Connect Secure (ICS) appliances
Miscreants warming to Delphi, Haskell, and the like to evade detection Malware authors looking to evade analysis are turning to less popular programming languages like Delphi or Haskell.…
Cybersecurity researchers have discovered a new Android banking malware called Crocodilus that's primarily designed to target users in Spain and Turkey
Cybersecurity researchers are calling attention to a new sophisticated malware called CoffeeLoader that's designed to download and execute secondary payloads
An Android malware family previously observed targeting Indian military personnel has been linked to a new campaign likely aimed at users in Taiwan under the guise of chat apps
A China-linked cyberespionage group known as 'FamousSparrow' was observed using a new modular version of its signature backdoor 'SparrowDoor' against a US-based trade organization. [...]
Newly identified CoffeeLoader uses multiple evasion techniques and persistence mechanisms to deploy payloads and bypass endpoint security
Many successful phishing attacks result in a financial loss or malware infection. But falling for some phishing scams, like those currently targeting Russians searching online for organizations that are fighting the Kremlin war machine, can cost you your freedom or your life.
PJobRAT malware targets Taiwan Android users, stealing data through fake messaging platforms
Popularity of the generative AI platform makes it an obvious choice for cybercriminals abusing Google-sponsored search results, according to researchers.
An advanced persistent threat (APT) group with ties to Pakistan has been attributed to the creation of a fake website masquerading as India's public sector postal system as part of a campaign designed to infect both Windows and Android users in the country
Hackers have long used Word and Excel documents as delivery vehicles for malware, and in 2025, these tricks are far from outdated. From phishing schemes to zero-click exploits, malicious Office files are still one of the easiest ways into a victim’s system
Cybersecurity Firm Finds Rash of Apps Coded With Microsoft .NET MAUICybercriminals are using a Microsoft cross-platform app development framework to create Android malware that bypasses security measures, evades detection and steals user data. Malicious apps spotted by McAfee researchers aren't traditional Android malware.
The Chinese threat actor known as FamousSparrow has been linked to a cyber attack targeting a trade group in the United States and a research institute in Mexico to deliver its flagship backdoor SparrowDoor and ShadowPad
The threat actor known as EncryptHub exploited a recently-patched security vulnerability in Microsoft Windows as a zero-day to deliver a wide range of malware families, including backdoors and information stealers such as Rhadamanthys and StealC
A newly discovered malware campaign uses malicious npm packages to deploy reverse shells, compromising development environments
The Anti-Malware Testing Standards Organization published a Sandbox Evaluation Framework to set a standard among various sandbox offerings that help protect organizations from rising threats.
Researchers at Kaspersky discovered cyber-espionage activity that used the vulnerability in a one-click phishing attack to deliver malware.
Google has fixed a high-severity Chrome zero-day vulnerability exploited to escape the browser's sandbox and deploy malware in espionage attacks targeting Russian organizations. [...]
McAfee researchers have identified a new wave of Android malware campaigns leveraging .NET MAUI to steal sensitive user information through fake apps