#zero_day

A vishing scam via Microsoft Teams led to attackers misusing TeamViewer to drop malware and stay hidden using simple but effective techniques.

The threat actors behind the zero-day exploitation of a recently-patched security vulnerability in Microsoft Windows have been found to deliver two new backdoors called SilentPrism and DarkWisp. The activity has been attributed to a suspected Russian hacking group called Water Gamayun, which is also known as EncryptHub and LARVA-208. "The threat actor deploys payloads primarily by means of

Every week, someone somewhere slips up—and threat actors slip in. A misconfigured setting, an overlooked vulnerability, or a too-convenient cloud tool becomes the perfect entry point. But what happens when the hunters become the hunted? Or when old malware resurfaces with new tricks? Step behind the curtain with us this week as we explore breaches born from routine oversights—and the unexpected

Download Talos' 2024 Year in Review now, and access key insights on the top targeted vulnerabilities of the year, network-based attacks, email threats, adversary toolsets, identity attacks, multi-factor authentication (MFA) abuse, ransomware and AI-based attacks.

Mozilla has released updates to address a critical security flaw impacting its Firefox browser for Windows, merely days after Google patched a similar flaw in Chrome that came under active exploitation as a zero-day. The security vulnerability, CVE-2025-2857, has been described as a case of an incorrect handle that could lead to a sandbox escape. "Following the recent Chrome sandbox escape (

In this blog post, Joe covers the very basics of money laundering, how it facilitates ransomware cartels, and what the regulatory future holds for cybercrime.

The threat actor known as EncryptHub exploited a recently-patched security vulnerability in Microsoft Windows as a zero-day to deliver a wide range of malware families, including backdoors and information stealers such as Rhadamanthys and StealC. "In this attack, the threat actor manipulates .msc files and the Multilingual User Interface Path (MUIPath) to download and execute malicious payload,

Google has released out-of-band fixes to address a high-severity security flaw in its Chrome browser for Windows that it said has been exploited in the wild as part of attacks targeting organizations in Russia.  The vulnerability, tracked as CVE-2025-2783, has been described as a case of "incorrect handle provided in unspecified circumstances in Mojo on Windows." Mojo refers to a

Oracle denies breach claims as hacker alleges access to 6 million cloud records. CloudSEK reports a potential zero-day exploit affecting 140,000 tenants.

In this week’s Threat Source newsletter, William pitches a fun comparison between baseball legend Ichiro Suzuki and the unsung heroes of information security, highlights newly released UAT-5918 research, and shares an exciting new Talos video.