A new self-destructing backdoor called Mistic used in intrusions since April appears to be linked to a criminal gang that compromises corporate networks and then sells that access to ransomware groups, according to security researchers.
This backdoor, also tracked as MLTBackdoor, was first documented by Zscaler earlier this month, with the security shop suggesting the novel malware is “likely used in ransomware attacks to establish a foothold for lateral movement.”
Read more…
Source:
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- Hack-for-hire group caught targeting Android devices and iCloud backups
April 8, 2026
Security researchers say they have identified a hack-for-hire group targeting journalists, activists, and government officials across the Middle East and North Africa. The hackers used phishing attacks to access targets’ iCloud backups and messaging accounts on Signal, and deployed Android spyware capable of taking over the targets’ devices. This hacking campaign highlights a growing trend of ...
- Iranian-Affiliated Cyber Actors Exploit Programmable Logic Controllers Across US Critical Infrastructure
April 7, 2026
Iran-affiliated advanced persistent threat (APT) actors are conducting exploitation activity targeting internet-facing operational technology (OT) devices, including programmable logic controllers (PLCs) manufactured by Rockwell Automation/Allen-Bradley. This activity has led to PLC disruptions across several U.S. critical infrastructure sectors through malicious interactions with the project file and manipulation of data on human machine interface (HMI) and supervisory ...
- Attackers exploited critical FortiClient EMS bug as a 0-day
April 6, 2026
Fortinet released an emergency patch over the weekend for a critical FortiClient Enterprise Management Server (EMS) bug believed to be under attack since at least March 31. The flaw, tracked as CVE-2026-35616, is an improper access control vulnerability that allows unauthenticated attackers to execute unauthorized code or commands via crafted requests. It earned a critical 9.1 ...
- Watch how job interviewer exposes North Korean fake IT worker
April 6, 2026
For the last few years, North Koreans have gotten remote jobs at hundreds of Western companies pretending to be from somewhere else, using fake resumes, and sometimes with the help of American collaborators. It’s been a major problem for years, as North Korea remains highly sanctioned by the U.S. and European governments because of the regime’s ...
- New “BrowserGate” report claims LinkedIn secretly scans user browsers for installed extensions and collects device data
April 6, 2026
A new report is alleging LinkedIn uses hidden JavaScript to scan its visitors’ browsers for installed extensions, looks for those that compete with its own sales tools, and then twists its users’ arms until they stop using those and pick LinkedIn’s products, instead. However the social network says this is a smear campaign run by a ...
- Storm-1175 focuses gaze on vulnerable web-facing assets in high-tempo Medusa ransomware operations
April 6, 2026
The financially motivated cybercriminal actor tracked by Microsoft Threat Intelligence as Storm-1175 operates high-velocity ransomware campaigns that weaponize N-days, targeting vulnerable, web-facing systems during the window between vulnerability disclosure and widespread patch adoption. Following successful exploitation, Storm-1175 rapidly moves from initial access to data exfiltration and deployment of Medusa ransomware, often within a few days and, ...

