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The first ThreatsDay Bulletin of 2026 lands on a day that already feels symbolic — new year, new breaches, new tricks. If the past twelve months taught defenders anything, it’s that threat actors don’t pause for holidays or resolutions. They just evolve faster. This week’s round-up shows how subtle shifts in behavior, from code tweaks to job scams, are rewriting what “cybercrime” looks like in practice. Across the landscape, big players are being tested, familiar threats are mutating, and smaller stories are quietly signaling bigger patterns ahead. The trend isn’t about one big breach anymore; it’s about many small openings that attackers exploit with precision. The pace of exploitation, deception, and persistence hasn’t slowed; it’s only become more calculated. Each update in this edition highlights how the line between normal operations and compromise is getting thinner by the week. Here’s a sharp look at what’s moving beneath the surface of the cybersecurity world as 2026 begin...

Cybersecurity researchers have disclosed details of a persistent nine-month-long campaign that has targeted Internet of Things (IoT) devices and web applications to enroll them into a botnet known as RondoDox. As of December 2025, the activity has been observed leveraging the recently disclosed React2Shell (CVE-2025-55182, CVSS score: 10.0) flaw as an initial access vector, CloudSEK said in an analysis. React2Shell is the name assigned to a critical security vulnerability in React Server Components (RSC) and Next.js that could allow unauthenticated attackers to achieve remote code execution on susceptible devices. According to statistics from the Shadowserver Foundation, there are about 90,300 instances that remain susceptible to the vulnerability as of December 31, 2025, out of which 68,400 instances are located in the U.S., followed by Germany (4,300), France (2,800), and India (1,500). RondoDox, which emerged in early 2025, has broadened its scale by adding new N-day secur...

As web browsers evolve into all-purpose platforms, performance and productivity often suffer.  Feature overload, excessive background processes, and fragmented workflows can slow down browsing sessions and introduce unnecessary friction, especially for users who rely on the browser as a primary work environment. This article explores how adopting a lightweight, task-focused browser, like Adapt Browser , can help users browse faster, reduce distractions, and complete everyday tasks more efficiently, without relying on heavy extensions or complex configurations. The Productivity Problem With Modern Browsing For many professionals, the browser functions as a central hub for research, communication, content consumption, and operational work. However, common challenges persist: High CPU and memory usage caused by background services Excessive tab proliferation leading to loss of context Frequent switching between browser tabs and external applications Reliance on extensions t...

Trust Wallet on Tuesday revealed that the second iteration of the Shai-Hulud (aka Sha1-Hulud) supply chain outbreak in November 2025 was likely responsible for the hack of its Google Chrome extension , ultimately resulting in the theft of approximately $8.5 million in assets. "Our Developer GitHub secrets were exposed in the attack, which gave the attacker access to our browser extension source code and the Chrome Web Store (CWS) API key," the company said in a post-mortem published Tuesday. "The attacker obtained full CWS API access via the leaked key, allowing builds to be uploaded directly without Trust Wallet's standard release process, which requires internal approval/manual review." Subsequently, the attacker is said to have registered the domain "metrics-trustwallet[.]com" and pushed a trojanized version of the extension with a backdoor that's capable of harvesting users' wallet mnemonic phrases to the sub-domain "api.metrics...

The threat actor behind two malicious browser extension campaigns, ShadyPanda and GhostPoster , has been attributed to a third attack campaign codenamed DarkSpectre that has impacted 2.2 million users of Google Chrome, Microsoft Edge, and Mozilla Firefox. The activity is assessed to be the work of a Chinese threat actor that Koi Security is tracking under the moniker DarkSpectre . In all, the campaigns have collectively affected over 8.8 million users spanning a period of more than seven years. ShadyPanda was first unmasked by the cybersecurity company earlier this month as targeting all three browser users to facilitate data theft, search query hijacking, and affiliate fraud. It has been found to affect 5.6 million users, including 1.3 newly identified victims stemming from over 100 extensions flagged as connected to the same cluster. This also includes an Edge add-on named "New Tab - Customized Dashboard" that features a logic bomb that waits for three days prior to t...