FortiGuard Labs recently observed several targeted phishing campaigns in Taiwan that use themes designed to exploit local business processes. These campaigns disseminate Winos 4.0 (ValleyRat) and subsequent malicious plugins through weaponized attachments or embedded links.
The lures mimic official communications, such as tax audit notifications, tax filing software installers, and cloud-based e-invoice downloads. Fortinet researchers analysis of domain registration data reveals that attackers use a rotating set of domains and cloud services to host and distribute malware. The highly volatile nature of this infrastructure renders traditional, static domain blocking insufficient as a primary defense. Over the past two months, the researchers have identified various delivery techniques, including malicious LNK files used for a downloader.
Read more…
Source: Fortinet
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- OpenAI Data Breach Exposes User Data
December 1, 2025
A few days ago, on November 26th, right before Thanksgiving, OpenAI, the maker of ChatGPT, confirmed a recent security breach incident that started towards the beginning of November, which impacted its users, specifically those connected through OpenAI’s APIs. What caused the data breach? “On November 9, 2025, Mixpanel became aware of an attacker that gained unauthorized ...
- South Korea cyber crisis deepens as Coupang data leak exposes national vulnerabilities
December 1, 2025
An investigation is under way into the cause of the breach. The leak raised concerns about phishing attempts targeting customers. Telecom, payments and crypto firms also reported recent breaches. A major data breach at South Korea’s biggest e-retailer has intensified concerns about the country’s digital preparedness, with the latest incident now seen as part of a ...
- Thousands of Airbus planes grounded after faulty software detected
November 29, 2025
Airlines around the world have been forced to ground thousands of Airbus planes following the discovery of a software problem which may have contributed to a sudden drop in the altitude of a plane last month, injuring 15 people. Around 6,000 A320 planes are thought to be affected, delaying and cancelling flights over the weekend. Airbus ...
- Tomiris wreaks Havoc: New tools and techniques of the APT group
November 28, 2025
While tracking the activities of the Tomiris threat actor, Kaspersky researchers identified new malicious operations that began in early 2025. These attacks targeted foreign ministries, intergovernmental organizations, and government entities, demonstrating a focus on high-value political and diplomatic infrastructure. In several cases, Kaspersky traced the threat actor’s actions from initial infection to the deployment of post-exploitation ...
- Organised crime online: How Europol disrupts cybercrime
November 27, 2025
How does Europol target cybercrime networks? Investigate phishing-as-a-service platforms? Or help tackle child sexual exploitation? This publication, presented at the Committee on Civil Liberties, Justice and Home Affairs Ordinary (LIBE), provides a general overview on how Europol disrupts cybercrime, taking the key insights from the Internet Organised Crime Threat Assessment (IOCTA) and EU Serious and Organised ...
- The Golden Scale: ‘Tis the Season for Unwanted Gifts
November 26, 2025
In October 2025, we published two Insights blogs on threat activity affiliated with the cybercriminal alliance known as Scattered LAPSUS$ Hunters (SLSH). After a few weeks of apparent inactivity, the threat actors have returned with a vengeance based on open-source reporting and conversations obtained from a new Telegram channel (scattered LAPSUS$ hunters part 7). This latest ...