MEDIUMApt
Global

FrostyNeighbor: Fresh mischief and digital shenanigans

·Source: WeLiveSecurity (ESET)

Updated:

Executive Summary

ESET researchers uncovered new activities attributed to FrostyNeighbor, updating its compromise chain to support the group’s continual cyberespionage operations

Analysis

ESET researchers uncovered new activities attributed to FrostyNeighbor, updating its compromise chain to support the group’s continual cyberespionage operations
Source Attribution

Originally published by WeLiveSecurity (ESET) on May 14, 2026.

Related Threats

MEDIUMApt

Turla Turns Kazuar Backdoor Into Modular P2P Botnet for Persistent Access

The Russian state-sponsored hacking group known as Turla has transformed its custom backdoor Kazuar into a modular peer-to-peer (P2P) botnet that's engineered for stealth and persistent access to compromised hosts. Turla, per the U.S. Cybersecurity and Infrastructure Security Agency (CISA), is assessed to be affiliated with Center 16 of Russia's Federal Security Service (FSB)

The Hacker News
CRITICALData Breach

Welcome to BlackFile: Inside a Vishing Extortion Operation

<div class="block-paragraph_advanced"><p>Written by: Austin Larsen, Tyler McLellan, Genevieve Stark, Dan Ebreo</p> <hr/></div> <div class="block-paragraph_advanced"><h3><span style="vertical-align: baseline;">Introduction</span><strong style="vertical-align: baseline;"> </strong></h3> <p><span style="vertical-align: baseline;">Google Threat Intelligence Group (GTIG) has continued to track an expan

Mandiant
CRITICALZero Day

Cisco warns of an actively exploited SD-WAN flaw with max severity

Cisco has disclosed a max-severity authentication bypass vulnerability affecting its Catalyst SD-WAN Controller and Catalyst SD-WAN Manager platforms, warning that the flaw has already been found to be exploited in the wild. The disclosure follows an earlier authentication bypass vulnerability that Cisco patched in February. In the latest advisory, the company said the new flaw was identified whil

CVE-2026-20182
CSO Online