Latest cybersecurity reporting from selected sources.

Cybersecurity researchers have disclosed details of a new Linux backdoor named PamDOORa that's being advertised on the Rehub Russian cybercrime forum for $1,600 by a threat actor called "darkworm." The backdoor is designed as a Pluggable Authentication Module (PAM)-based post-exploitation toolkit that enables persistent SSH access by means of a magic password and specific TCP port combination.

Cybersecurity researchers have disclosed details of a malicious Go module that's designed to harvest passwords, create persistent access via SSH, and deliver a Linux backdoor named Rekoobe

Cybersecurity researchers have discovered a malicious Go module that presents itself as a brute-force tool for SSH but actually contains functionality to discreetly exfiltrate credentials to its creator

Malicious actors have been observed exploiting a now-patched critical security flaw impacting Erlang/Open Telecom Platform (OTP) SSH as early as beginning of May 2025, with about 70% of detections originating from firewalls protecting operational technology (OT) networks

Cybersecurity researchers have flagged a previously undocumented Linux backdoor dubbed Plague that has managed to evade detection for a year

Cybersecurity researchers have discovered new artifacts associated with an Apple macOS malware called ZuRu, which is known to propagate via trojanized versions of legitimate software

Threat actors are weaponizing exposed Java Debug Wire Protocol (JDWP) interfaces to obtain code execution capabilities and deploy cryptocurrency miners on compromised hosts

Cybersecurity researchers have uncovered three malicious packages in the npm registry that masquerade as a popular Telegram bot library but harbor SSH backdoors and data exfiltration capabilities

Cybersecurity researchers have shed light on an "auto-propagating" cryptocurrency mining botnet called Outlaw (aka Dota) that's known for targeting SSH servers with weak credentials

Cybersecurity researchers have found that ransomware attacks targeting ESXi systems are also leveraging the access to repurpose the appliances as a conduit to tunnel traffic to command-and-control (C2) infrastructure and stay under the radar

As many as six security vulnerabilities have been disclosed in the popular Rsync file-synchronizing tool for Unix systems, some of which could be exploited to execute arbitrary code on a client

Cybersecurity researchers have discovered a number of suspicious packages published to the npm registry that are designed to harvest Ethereum private keys and gain remote access to the machine via the secure shell (SSH) protocol

The cryptojacking operation known as TeamTNT has likely resurfaced as part of a new campaign targeting Virtual Private Server (VPS) infrastructures based on the CentOS operating system

Cybersecurity researchers have discovered a new variant of the Gafgyt botnet that's targeting machines with weak SSH passwords to ultimately mine cryptocurrency on compromised instances using their GPU computational power

Cybersecurity researchers have uncovered a new malware campaign that targets publicly exposed Docket API endpoints with the aim of delivering cryptocurrency miners and other payloads

The maintainers of the PuTTY Secure Shell (SSH) and Telnet client are alerting users of a critical vulnerability impacting versions from 0.68 through 0.80 that could be exploited to achieve full recovery of NIST P-521 (ecdsa-sha2-nistp521) private keys

Security researchers from Ruhr University Bochum have discovered a vulnerability in the Secure Shell (SSH) cryptographic network protocol that could allow an attacker to downgrade the connection's security by breaking the integrity of the secure channel

Researchers have disclosed a previously undocumented local file inclusion (LFI) vulnerability in Hashnode, a developer-oriented blogging platform, that could be abused to access sensitive data such as SSH keys, server's IP address, and other network information