StealthInk: a Multi-Bit and Stealthy Watermark for Large Language Models

Watermarking for large language models LLMs offers a promising approach to identifying AI-generated text. Existing approaches, however, either compromise the distribution of original generated text by LLMs or are limited to embedding zero-bit information that only allows for watermark detection b...

BitBypass: a New Direction in Jailbreaking Aligned Large Language Models with Bitstream Camouflage

The inherent risk of generating harmful and unsafe content by Large Language Models LLMs, has highlighted the need for their safety alignment. Various techniques like supervised fine-tuning, reinforcement learning from human feedback, and red-teaming were developed for ensuring the safety alignme...

Keeping an Eye on LLM Unlearning: the Hidden Risk and Remedy

Although Large Language Models LLMs have demonstrated impressive capabilities across a wide range of tasks, growing concerns have emerged over the misuse of sensitive, copyrighted, or harmful data during training. To address these concerns, unlearning techniques have been developed to remove the...

VIMU: Effective Physics-Based Realtime Detection and Recovery against Stealthy Attacks on UAVs

Sensor attacks on robotic vehicles have become pervasive and manipulative. Their latest advancements exploit sensor and detector characteristics to bypass detection. Recent security efforts have leveraged the physics-based model to detect or mitigate sensor attacks. However, these approaches are...

REDEditing: Relationship-Driven Precise Backdoor Poisoning on Text-To-Image Diffusion Models

The rapid advancement of generative AI highlights the importance of text-to-image T2I security, particularly with the threat of backdoor poisoning. Timely disclosure and mitigation of security vulnerabilities in T2I models are crucial for ensuring the safe deployment of generative models. We...

Medusa Ransomware Disables Anti-Malware Tools with Stolen Certificates

Cybercriminals exploit AbyssWorker driver to disable EDR systems, deploying MEDUSA ransomware with revoked certificates for stealthy attacks...

Chinese Hackers Breach Asian Telecom, Remain Undetected for Over 4 Years

A major telecommunications company located in Asia was allegedly breached by Chinese state-sponsored hackers who spent over four years inside its systems, according to a new report from incident response firm Sygnia. The cybersecurity company is tracking the activity under the name Weaver Ant ,...

FIN7, FIN8, and Others Use Ragnar Loader for Persistent Access and Ransomware Operations

Threat hunters have shed light on a "sophisticated and evolving malware toolkit" called Ragnar Loader that's used by various cybercrime and ransomware groups like Ragnar Locker aka Monstrous Mantis, FIN7, FIN8, and Ruthless Mantis ex-REvil. "Ragnar Loader plays a key role in keeping access to...

PT-2025-15185

Name of the Vulnerable Software and Affected Versions The product name cannot be determined. Description A DLL Search Order Hijacking issue potentially allowed an attacker with administrator privileges to load a malicious dynamic-link library and execute its code. Recommendations At the moment,...

BellaCPP: Discovering a new BellaCiao variant written in C++

Introduction BellaCiao is a .NET-based malware family that adds a unique twist to an intrusion, combining the stealthy persistence of a webshell with the power to establish covert tunnels. It surfaced for the first time in late April 2023 and has since been publicly attributed to the APT actor...

Lazarus Group Targets macOS with RustyAttr Trojan in Fake Job PDFs

Group-IB has uncovered Lazarus group’s stealthy new trojan and technique of hiding malicious code in extended attributes on…...

Ymir: new stealthy ransomware in the wild

Introduction In a recent incident response case, we discovered a new and notable ransomware family in active use by the attackers, which we named "Ymir". The artifact has interesting features, including a large set of operations performed in memory with the help of the malloc , memmove and memcmp...

Supply Chain Attacks Can Exploit Entry Points in Python, npm, and Open-Source Ecosystems

Cybersecurity researchers have found that entry points could be abused across multiple programming ecosystems like PyPI, npm, Ruby Gems, NuGet, Dart Pub, and Rust Crates to stage software supply chain attacks. "Attackers can leverage these entry points to execute malicious code when specific...

North Korean Hackers Using New VeilShell Backdoor in Stealthy Cyber Attacks

Threat actors with ties to North Korea have been observed delivering a previously undocumented backdoor and remote access trojan RAT called VeilShell as part of a campaign targeting Cambodia and likely other Southeast Asian countries. The activity, dubbed SHROUDEDSLEEP by Securonix, is believed t...

PT-2024-12430 · Apache · Apache Rocketmq

Name of the Vulnerable Software and Affected Versions: Apache RocketMQ affected versions not specified Description: The issue concerns a stealthy malware named perfctl, which targets millions of Linux servers. It exploits over 20,000 common misconfigurations and a critical vulnerability in Apache...

Quad7 Botnet Expands to Target SOHO Routers and VPN Appliances

The operators of the mysterious Quad7 botnet are actively evolving by compromising several brands of SOHO routers and VPN appliances by leveraging a combination of both known and unknown security flaws. Targets include devices from TP-LINK, Zyxel, Asus, Axentra, D-Link, and NETGEAR, according to ...

ViperSoftX Malware Disguises as eBooks on Torrents to Spread Stealthy Attacks

The sophisticated malware known as ViperSoftX has been observed being distributed as eBooks over torrents. "A notable aspect of the current variant of ViperSoftX is that it uses the Common Language Runtime CLR to dynamically load and run PowerShell commands, thereby creating a PowerShell...

DNS Tunneling Used for Stealthy Scans and Email Tracking

By Deeba Ahmed Hackers are hiding malicious messages in everyday internet traffic! Learn how DNS tunneling works and how to protect yourself from this sneaky cyberattack. Stop hackers from scanning your network and tracking your clicks. This is a post from HackRead.com Read the original post: DNS...

Researchers Detail Multistage Attack Hijacking Systems with SSLoad, Cobalt Strike

Cybersecurity researchers have discovered an ongoing attack campaign that's leveraging phishing emails to deliver a malware called SSLoad. The campaign, codenamed FROZENSHADOW by Securonix, also involves the deployment of Cobalt Strike and the ConnectWise ScreenConnect remote desktop software...

Over 800 npm Packages Found with Discrepancies, 18 Exploit 'Manifest Confusion'

New research has discovered over 800 packages in the npm registry which have discrepancies from their registry entries, out of which 18 have been found to exploit a technique called manifest confusion. The findings come from cybersecurity firm JFrog, which said the issue could be exploited by...