Malware | Breaking Cybersecurity News | The Hacker News

Linux backdoors targeting telecom and network appliances in South Korea and Taiwan have been disguising their traffic as email services and seemingly legitimate processes to blend in and evade detection. Threat actors are known to name their malicious software after a legitimate operating system component or a process as a defense evasion measure. By borrowing the name of a real binary, it may make it appear less conspicuous among other Windows processes, lend it a false sense of trust, or be overlooked by an analyst during casual inspection. However, the backdoors examined by Rapid7 have been found to go beyond imitating file names by assuming the identities of email security products like SpamSniper and ShareTech that are widely used in enterprise environments in South Korea and Taiwan. According to vendor Jiran Group, SpamSniper is advertised as "Korea's leading email security solution" that defends organizations against spam, malware, and server attacks. T...

A new type of ClickFix attack is using compromised websites to trick users into executing a malicious payload cached in a web browser's cache. "Instead of downloading and executing remote payloads like the typical attack pattern, in this attack, the websites pre-fetch a script payload into the browser cache disguised as a PNG file," the Microsoft Threat Intelligence team said in a post on X. Thus, when the victim is prompted to paste and execute a malicious command – as is the case with ClickFix attacks – it executes the cached website content that's already on the device.  What's notable about this browser cache smuggling approach is that it allows the attackers to conceal the payload script and bypass character limit restrictions imposed on Windows Run (aka the Run dialog). The Windows Run dialog, triggered by Win + R, truncates any input that exceeds approximately 260 characters. In the attack chain observed by Microsoft, the staged payload is a ...

A blank field. A public repo. One reply to an email. A box left exposed. None of this sounds dramatic, which is partly the problem. This week’s threats keep finding leverage in small things that were easy to overlook. There are actively exploited bugs in the mix, cleaner intrusion paths, smarter automation, and a long patch list waiting behind them. Some attacks are getting more capable. Others are still getting in because the basics gave way first. Here’s what mattered this week. ⚡ Threat of the Week Citrix Warns of Newly Exploited NetScaler ADC and Gateway Flaw — Citrix released security updates for a high-severity security flaw in NetScaler ADC and NetScaler Gateway that has been exploited as part of targeted zero-day attacks. The vulnerability, tracked as CVE-2026-88779, carries a CVSS score of 8.7 out of 10.0. "CVE-2026-88779 is a memory overflow vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway that can lead to denial-of-service under specific depl...

Every modern enterprise depends on credentials. This is how humans, systems, and now AI, all connect to data, services, and each other securely. GitGuardian helps secure that credential layer through three connected capabilities: Detect, Remediate, and Prevent. The journey starts with detection, because organizations first need to understand what credentials exist, where they live, and what they can access. This is the first of three articles we are releasing that explain the reason behind our mission.  — Software production is accelerating beyond the growth assumptions that shaped many of today's security controls. GitHub COO Kyle Daigle said the platform had gone from roughly 1 billion commits during all of 2025 to 2.9 billion commits in August 2026, an annualized pace of over 14 billion for the 2026 reporting year. GitHub's own engineering team has gone further in its capacity planning, saying it moved from preparing for 10x scale to designing for a future that require...

Threat actors have been observed attempting to exploit a now-patched critical security flaw impacting the Realtek Jungle software development kit (SDK) to deploy a botnet malware called Cling . "Cling is notable not because it introduces a new propagation technique, but because it repurposes ordinary STUN behavior into a practical command-and-control channel," Nozomi Networks said in a report published last week. "The result is a botnet whose traffic can resemble legitimate NAT-traversal activity while still supporting propagation, proxying, tunneling and denial-of-service commands." The operational technology (OT) security company said it observed a spike in attempts to exploit CVE-2021-35394 (CVSS score: 9.8), a critical remote code execution (RCE) flaw in Realtek Jungle SDK starting around September 5, 2026, with a subset of the activity delivering Cling. An analysis of the malware sample has found it to embed exploit logic for various command injectio...