Back in 2024, Kaspersky researchers gave a brief description of a complex cyberespionage campaign that we dubbed “PassiveNeuron”. This campaign involved compromising the servers of government organizations with previously unknown APT implants, named “Neursite” and “NeuralExecutor”.
However, since its discovery, the PassiveNeuron campaign has been shrouded in mystery. For instance, it remained unclear how the implants in question were deployed or what actor was behind them. After the researchers detected this campaign and prevented its spreading back in June 2024, they did not see any further malware deployments linked to PassiveNeuron for quite a long time, about six months. However, since December 2024, Kaspersky researchers have observed a new wave of infections related to PassiveNeuron, with the latest ones dating back to August 2025.
Read more…
Source: Kaspersky
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- Jailbroken AIs are helping cybercriminals to hone their craft
June 26, 2025
Cybercriminals are bypassing the guardrails that are supposed to keep AI models from carrying out criminal activities, according to researchers. We’ve seen the misuse of AI models by cybercriminals growing rapidly over the past several years, shaping a new era of digital threats. Early on, attackers focused on jailbreaking public AI chatbots, which meant they used ...
- Active Exploitation of Zero-Day Vulnerability CVE-2025-6543 in NetScaler ADC and NetScaler Gateway
June 26, 2025
Citrix has released a critical security bulletin addressing a vulnerability affecting NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway). Citrix NetScaler is an all-in-one load balancer, web application firewall (WAF), virtual private network (VPN) gateway and SSL offloading tool for web applications. CVE-2025-6543 is a ‘memory overflow’ vulnerability with a CVSSv4 base score of ...
- Multiple Brother Devices: Multiple Vulnerabilities (FIXED)
June 25, 2025
Rapid7 conducted a zero-day research project into multifunction printers (MFP) from Brother Industries, Ltd. This research resulted in the discovery of 8 new vulnerabilities. Some or all of these vulnerabilities have been identified as affecting 689 models across Brother’s range of printer, scanner, and label maker devices. Additionally, 46 printer models from FUJIFILM Business Innovation, 5 ...
- U.S. House of Representatives bans WhatsApp from staff devices
June 24, 2025
The U.S. House of Representatives’ top official has banned WhatsApp from government-issued devices used by its staff, saying the app poses potential security risks, Reuters reported, citing a memo sent to House staff. “The Office of Cybersecurity has deemed WhatsApp a high risk to users due to the lack of transparency in how it protects user ...
- U.S. Department of Defense Employee Charged with Unlawful Retention of Classified Documents
June 24, 2025
A civilian employee of the U.S. Department of Defense (DoD) was arrested and made her initial court appearance yesterday to face charges of unauthorized removal and retention of classified documents. Ewa Maria Ciszak, 64, of Huntsville, Alabama, is charged with knowingly removing and retaining classified documents and materials. According to court documents unsealed today in the ...
- SparkKitty, SparkCat’s little brother: A new Trojan spy found in the App Store and Google Play
June 23, 2025
In January 2025, Kaspersky researchers uncovered the SparkCat spyware campaign, which was aimed at gaining access to victims’ crypto wallets. The threat actor distributed apps containing a malicious SDK/framework. This component would wait for a user to open a specific screen (typically a support chat), then request access to the device’s gallery. It would then use ...