Malicious Code covers malware analysis, reported incidents, infrastructure, disruption efforts, and defensive guidance to reduce cyber risk.
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Malicious code is software, a script, or an altered program intended to perform unauthorized or harmful actions on a device or network. The term includes malware such as viruses, worms, trojans, spyware, and ransomware, as well as harmful macros or commands. Depending on its function, it may exploit a software weakness, execute with a user’s permissions, disrupt availability, or modify, destroy, or collect data.
Security teams should treat malicious code as both a prevention and detection concern: keep operating systems and applications patched, restrict unnecessary scripting and privileges, and use endpoint controls that identify unusual execution or persistence. Network and host telemetry can support investigation, while isolation and recovery from known-good backups can limit damage after execution. Analysis of samples and indicators can also guide threat intelligence and vulnerability-management priorities, but suspected code should be handled carefully to avoid executing it on production systems or exposing collected data.
Weekly headline count for the current query.
Old Unix Symlink Trick Lets Malicious Code Bypass User ChecksWiz researchers found that six popular AI coding assistants can be tricked into modifying sensitive files, including SSH keys, while their approval prompts display a harmless filename. The GhostApproval technique exploits a decades-old Unix symlink behavior to mislead users.
Attackers Compromised More Than 70 Microsoft Repositories in Under 2 MinutesAttackers linked to the Miasma supply-chain campaign compromised a Microsoft contributor account and pushed malicious code into more than 70 repositories, using artificial intelligence-assisted coding tools as an infection path to steal credentials and developer secrets at scale.
Open-Source Tool Security 'Dumpster Fire,' Experts WarnAn open-source AI assistant that exploded in popularity over the past month is exposing users to data theft, malicious code and runaway costs. Users can add functions called "skills" that connect assistants with different services - and hackers have been quick to add malicious examples.
3 Major Tech Firms Shipped Vulnerable Open-Source Tools to Hugging FaceResearchers discovered remote code execution vulnerabilities in three AI libraries from Apple, Salesforce and Nvidia used by models with tens of millions of Hugging Face downloads, allowing attackers to hide malicious code in model metadata.
JavaScript Repository Contends With Wormable Malicious CodeAn apparent "Dune" aficionado is responsible for the first self-propagating attack on the npm JavaScript repository in what one security company has called one of the most severe JavaScript supply-chain attacks so far. A malicious script exfiltrated data to GitHub repositories named "Shai-Hulud."
Steganography, Mobile Marketing Attribution, Code Obfuscation Deployed for Ad FraudA cybercrime crew using Android mobile apps to conduct advertising fraud took unusual pains to hide its activity, concealing malicious code in downloadable digital images and holding off from infecting the subset of users who organically found their apps through the Google Play store.
This Is Not the Malicious Code You're Looking For, Malware Tells AIIf you can't outsmart the antivirus, maybe you can sweet-talk the algorithm into looking the other way. Security researchers discovered what appears to be the first known attempt to deploy prompt injection against artificial intelligence-powered malware analysis.
Open-Source Models Hallucinate More Than Commercial Ones, Found StudyGenerative artificial intelligence assistants promise to streamline coding, but large language models' tendency to invent non-existent package names has led to a new supply chain hazard known as "slopsquatting," where attackers register phantom dependencies to slip malicious code into deployments.
North Korea's Lazarus Deploys Malicious NPM Packages to Steal DataNorth Korea's Lazarus Group expanded a malicious campaign of uploading malicious code to the JavaScript runtime environment npm repository, publishing 11 packages embedded with Trojan loaders. Researchers identified 11 malicious packages in the repository, a hotspot for supply chain attacks.
'Real Danger' Alert for Unpatched Veeam Servers Attached to a Production DomainWidely used Veeam Backup & Replication software has been patched to fix a critical vulnerability that could be abused to remotely exploit malicious code. Security experts recommend rapid patching, given ransomware and other groups' repeat targeting of the software.
Paste-and-Run Schemes Trick Users Into Running Attacker-Provided Malicious CodeSocial engineering tactics designed to trick users into installing malware, oftentimes by "fixing" a fake problem, are growing more common. Experts say a majority of these ClickFix - aka ClearFix or paste-and-run - attacks now lead to information-stealing malware infections.
Malicious Code Injected in reviewdog Just Hours Before tj-actions BackdooredJust days after researchers discovered an attack that subverted a widely used tool for software development platform GitHub, they discovered a second, prior attack, as part of what one expert said may be "a chain of supply chain attacks eventually leading to a specific high-value target."
Over 23,000 Code Repositories at Risk After Malicious Code Added to GitHub ActionAttackers subverted a widely used tool for software development environment GitHub, potentially allowing them to steal secrets from thousands of private code repositories as well as compromise other, widely used "open source libraries, binaries and artifacts" that use the tool, experts warned.
Flaw Enabled Signature Bypassing on Nuclei ProjectDiscoveryOpen-source vulnerability scanner Nuclei patched a critical flaw in its open-source vulnerability management tool ProjectDiscovery. Security firm Wiz uncovered the flaw, a signature verification system flaw that could allow attackers to execute malicious code using custom code templates.
Checkmarx's Sandeep Johri Details Malicious Code, AI Risks in Application SecurityAs software complexities grow, supply chain security is now essential to application security, according to Sandeep Johri, Checkmarx CEO. Johri discusses the challenges of malicious code, adversarial AI and the market's call for consolidated security platforms.
Flaws in Fuji's Tellus and V-Server Software Pose Risks to Critical InfrastructureSecurity researchers have uncovered 16 zero-day vulnerabilities in Japanese equipment manufacturer Fuji Electric's Tellus and V-Server remote monitoring software that enable attackers to execute malicious code in devices commonly used by utilities and other critical infrastructure providers.
Attackers Could Shut Down Operations Or Cause Physical DamageA severe vulnerability in Rockwell Automation software used to configure programmable logic controllers could allow attackers to remotely execute malicious code. The vulnerability is rated 8.8 on the CVSS v4 scale. The U.S. Cybersecurity and Infrastructure Security Agency advised immediate patching.
Attackers Could Exploit Flaw to Run Malicious Code on Google' s, Customers' ServersGoogle patched a critical remote execution vulnerability in its cloud platform Cloud Composer service, "CloudImposer," which could have allowed attackers to compromise millions of servers, say researchers from Tenable. The CloudImposer vulnerability could lead to the Jenga Tower effect.
Also: Dangers of Malicious Code Embedded in ML Models; Is Ransomware in Decline?AI's influence on social engineering and election security has become a focal point at Black Hat. ISMG editors discuss how advanced technologies are making it easier to manipulate people and compromise security systems and offer key insights on machine learning vulnerabilities.
Hackers Can Use the Attack Method to Manipulate ML Model Output and Steal DataResearchers have found a new way of poisoning machine learning models that could allow hackers to steal data and manipulate the artificial intelligence unit's output. Using the Sleepy Pickle attack method, hackers can inject malicious code into the serialization process, said Trail of Bits.