data exfiltration | Breaking Cybersecurity News | The Hacker News

Google Cloud's Mandiant Consulting has revealed that it has witnessed a drop in activity from the notorious Scattered Spider group, but emphasized the need for organizations to take advantage of the lull to shore up their defenses. "Since the recent arrests tied to the alleged Scattered Spider (UNC3944) members in the U.K., Mandiant Consulting hasn't observed any new intrusions directly attributable to this specific threat actor," Charles Carmakal, CTO of Mandiant Consulting at Google Cloud, told The Hacker News in a statement. "This presents a critical window of opportunity that organizations must capitalize on to thoroughly study the tactics UNC3944 wielded so effectively, assess their systems, and reinforce their security posture accordingly." Carmakal also warned businesses not to "let their guard down entirely," as other threat actors like UNC6040 are employing similar social engineering tactics as Scattered Spider to breach target netwo...

A newly emerged ransomware-as-a-service (RaaS) gang called Chaos is likely made up of former members of the BlackSuit crew , as the latter's dark web infrastructure has been the subject of a law enforcement seizure. Chaos, which sprang forth in February 2025, is the latest entrant in the ransomware landscape to conduct big-game hunting and double extortion attacks. "Chaos RaaS actors initiated low-effort spam flooding, escalating to voice-based social engineering for access, followed by RMM tool abuse for persistent connection and legitimate file-sharing software for data exfiltration," Cisco Talos researchers Anna Bennett, James Nutland, and Chetan Raghuprasad said . "The ransomware utilizes multi-threaded rapid selective encryption, anti-analysis techniques, and targets both local and network resources, maximizing impact while hindering detection and recovery." It's important to note here that the ransomware group is unrelated to the Chaos ransomware ...

Governmental organizations in Southeast Asia are the target of a new campaign that aims to collect sensitive information by means of a previously undocumented Windows backdoor dubbed HazyBeacon . The activity is being tracked by Palo Alto Networks Unit 42 under the moniker CL-STA-1020 , where "CL" stands for "cluster" and "STA" refers to "state-backed motivation." "The threat actors behind this cluster of activity have been collecting sensitive information from government agencies, including information about recent tariffs and trade disputes," security researcher Lior Rochberger said in a Monday analysis. Southeast Asia has increasingly become a focal point for cyber espionage due to its role in sensitive trade negotiations, military modernization, and strategic alignment in the U.S.–China power dynamic. Targeting government agencies in this region can provide valuable intelligence on foreign policy direction, infrastructure planni...

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A threat actor with suspected ties to India has been observed targeting a European foreign affairs ministry with malware capable of harvesting sensitive data from compromised hosts. The activity has been attributed by Trellix Advanced Research Center to an advanced persistent threat (APT) group called DoNot Team , which is also known as APT-C-35, Mint Tempest, Origami Elephant, SECTOR02, and Viceroy Tiger. It's been assessed to be active since 2016. "DoNot APT is known for using custom-built Windows malware, including backdoors like YTY and GEdit, often delivered through spear-phishing emails or malicious documents," Trellix researchers Aniket Choukde, Aparna Aripirala, Alisha Kadam, Akhil Reddy, Pham Duy Phuc, and Alex Lanstein said . "This threat group typically targets government entities, foreign ministries, defense organizations, and NGOs especially those in South Asia and Europe." The attack chain commences with phishing emails that aim to trick rec...

The threat actor behind the GIFTEDCROOK malware has made significant updates to turn the malicious program from a basic browser data stealer to a potent intelligence-gathering tool. "Recent campaigns in June 2025 demonstrate GIFTEDCROOK's enhanced ability to exfiltrate a broad range of sensitive documents from the devices of targeted individuals, including potentially proprietary files and browser secrets," Arctic Wolf Labs said in a report published this week. "This shift in functionality, combined with the content of its phishing lures, [...] suggests a strategic focus on intelligence gathering from Ukrainian governmental and military entities." GIFTEDCROOK was first documented by the Computer Emergency Response Team of Ukraine (CERT-UA) in early April 2025 in connection with a campaign targeting military entities, law enforcement agencies, and local self-government bodies. The activity, attributed to a hacking group it tracks as UAC-0226, involves th...

New research has uncovered continued risk from a known security weakness in Microsoft's Entra ID , potentially enabling malicious actors to achieve account takeovers in susceptible software-as-a-service (SaaS) applications. Identity security company Semperis, in an analysis of 104 SaaS applications, found nine of them to be vulnerable to Entra ID cross-tenant nOAuth abuse. First disclosed by Descope in June 2023, nOAuth refers to a weakness in how SaaS applications implement OpenID Connect ( OIDC ), which refers to an authentication layer built atop OAuth to verify a user's identity. The authentication implementation flaw essentially allows a bad actor to change the mail attribute in the Entra ID account to that of a victim's and take advantage of the app's "Log in with Microsoft" feature to hijack that account. The attack is trivial, but it also works because Entra ID permits users to have an unverified email address, opening the door to user imperson...

Unidentified threat actors have been observed targeting publicly exposed Microsoft Exchange servers to inject malicious code into the login pages that harvest their credentials. Positive Technologies, in a new analysis published last week, said it identified two different kinds of keylogger code written in JavaScript on the Outlook login page - Those that save collected data to a local file accessible over the internet Those that immediately send the collected data to an external server The Russian cybersecurity vendor said the attacks have targeted 65 victims in 26 countries worldwide, and marks a continuation of a campaign that was first documented in May 2024 as targeting entities in Africa and the Middle East. At that time, the company said it had detected no less than 30 victims spanning government agencies, banks, IT companies, and educational institutions, with evidence of the first compromise dating back to 2021. The attack chains involve exploiting known flaws in M...

Cybersecurity researchers have uncovered a Go-based malware called XDigo that has been used in attacks targeting Eastern European governmental entities in March 2025. The attack chains are said to have leveraged a collection of Windows shortcut ( LNK ) files as part of a multi-stage procedure to deploy the malware, French cybersecurity company HarfangLab said . XDSpy is the name assigned to a cyber espionage that's known to target government agencies in Eastern Europe and the Balkans since 2011. It was first documented by the Belarusian CERT in early 2020.  In recent years, companies in Russia and Moldova have been targeted by various campaigns to deliver malware families like UTask, XDDown, and DSDownloader that can download additional payloads and steal sensitive information from compromised hosts. HarfangLab said it observed the threat actor leveraging a remote code execution flaw in Microsoft Windows that's triggered when processing specially crafted LNK files. The v...

Google has revealed the various safety measures that are being incorporated into its generative artificial intelligence (AI) systems to mitigate emerging attack vectors like indirect prompt injections and improve the overall security posture for agentic AI systems. "Unlike direct prompt injections, where an attacker directly inputs malicious commands into a prompt, indirect prompt injections involve hidden malicious instructions within external data sources," Google's GenAI security team said . These external sources can take the form of email messages, documents, or even calendar invites that trick the AI systems into exfiltrating sensitive data or performing other malicious actions. The tech giant said it has implemented what it described as a "layered" defense strategy that is designed to increase the difficulty, expense, and complexity required to pull off an attack against its systems. These efforts span model hardening, introducing purpose-built mac...

A new multi-stage malware campaign is targeting Minecraft users with a Java-based malware that employs a distribution-as-service (DaaS) offering called Stargazers Ghost Network . "The campaigns resulted in a multi-stage attack chain targeting Minecraft users specifically," Check Point researchers Jaromír Hořejší and Antonis Terefos said in a report shared with The Hacker News. "The malware was impersonating Oringo and Taunahi, which are 'Scripts and macros tools' (aka cheats). Both the first and second stages are developed in Java and can only be executed if the Minecraft runtime is installed on the host machine." The end goal of the attack is to trick players into downloading a Minecraft mod from GitHub and deliver a .NET information stealer with comprehensive data theft capabilities. The campaign was first detected by the cybersecurity company in March 2025. What makes the activity notable is its use of an illicit offering called the Stargazers Ghost...

A former U.S. Central Intelligence Agency (CIA) analyst has been sentenced to little more than three years in prison for unlawfully retaining and transmitting top secret National Defense Information (NDI) to people who were not entitled to receive them and for attempting to cover up the malicious activity. Asif William Rahman, 34, of Vienna, has been sentenced today to 37 months on charges of stealing and divulging classified information. He was an employee of the CIA since 2016 and had Top Secret security clearance to access Sensitive Compartmented Information (SCI) until he was terminated from his job after he was arrested last November in Cambodia. Earlier this January, Rahman pleaded guilty to two counts of willful retention and transmission of classified information related to the national defense. As previously reported by The Hacker News, Rahman retained multiple Secret and Top Secret documents without authorization on October 17, 2024, took them to his place of residence...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday disclosed that ransomware actors are targeting unpatched SimpleHelp Remote Monitoring and Management (RMM) instances to compromise customers of an unnamed utility billing software provider. "This incident reflects a broader pattern of ransomware actors targeting organizations through unpatched versions of SimpleHelp RMM since January 2025," the agency said in an advisory. Earlier this year, SimpleHelp disclosed a set of flaws (CVE-2024-57727, CVE-2024-57728, and CVE-2024-57726) that could result in information disclosure, privilege escalation, and remote code execution. The vulnerabilities have since come under repeated exploitation in the wild, including by ransomware groups like DragonForce, to breach targets of interest. Last month, Sophos revealed that a Managed Service Provider's SimpleHelp deployed was accessed by the threat actor using these flaws, and then leveraged it to pivot t...

A novel attack technique named EchoLeak has been characterized as a "zero-click" artificial intelligence (AI) vulnerability that allows bad actors to exfiltrate sensitive data from Microsoft 365 (M365) Copilot's context sans any user interaction. The critical-rated vulnerability has been assigned the CVE identifier CVE-2025-32711 (CVSS score: 9.3). It requires no customer action and has been already addressed by Microsoft. There is no evidence that the shortcoming was exploited maliciously in the wild. "AI command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network," the company said in an advisory released Wednesday. It has since been added to Microsoft's Patch Tuesday list for June 2025, taking the total number of fixed flaws to 68. Aim Security, which discovered and reported the issue, said it's an instance of a large language model (LLM) Scope Violation that paves the way for indirect prompt injecti...

Google on Wednesday disclosed that the Chinese state-sponsored threat actor known as APT41 leveraged a malware called TOUGHPROGRESS that uses Google Calendar for command-and-control (C2). The tech giant, which discovered the activity in late October 2024, said the malware was hosted on a compromised government website and was used to target multiple other government entities. "Misuse of cloud services for C2 is a technique that many threat actors leverage in order to blend in with legitimate activity," Google Threat Intelligence Group (GTIG) researcher Patrick Whitsell said . APT41, also tracked as Axiom, Blackfly, Brass Typhoon (formerly Barium), Bronze Atlas, Earth Baku, HOODOO, RedGolf, Red Kelpie, TA415, Wicked Panda, and Winnti, is the name assigned to a prolific nation-state group known for its targeting of governments and organizations within the global shipping and logistics, media and entertainment, technology, and automotive sectors. In July 2024, Google reve...

Cybersecurity researchers have uncovered malicious packages uploaded to the Python Package Index (PyPI) repository that act as checker tools to validate stolen email addresses against TikTok and Instagram APIs. All three packages are no longer available on PyPI. The names of the Python packages are below - checker-SaGaF (2,605 downloads) steinlurks (1,049 downloads) sinnercore (3,300 downloads) "True to its name, checker-SaGaF checks if an email is associated with a TikTok account and an Instagram account," Socket researcher Olivia Brown said in an analysis published last week. Specifically, the package is designed to send HTTP POST requests to TikTok's password recovery API and Instagram's account login endpoints to determine if an email address passed as input is valid, meaning there exists an account holder corresponding to that email address. "Once threat actors have this information, just from an email address, they can threaten to dox or spam, c...