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Cybersecurity researchers have lifted the curtain on a stealthy botnet that's designed for distributed denial-of-service (DDoS) attacks. Called Masjesu, the botnet has been advertised via Telegram as a DDoS-for-hire service since it first surfaced in 2023. It's capable of targeting a wide range of IoT devices, such as routers and gateways, spanning multiple architectures. "Built for

A total of seven vulnerabilities, most of which can be exploited for DoS attacks, have been patched in OpenSSL. The post Data Leakage Vulnerability Patched in OpenSSL appeared first on SecurityWeek.

The vulnerability requires authentication for successful exploitation, but another flaw exposes the Jolokia API without authentication. The post RCE Bug Lurked in Apache ActiveMQ Classic for 13 Years appeared first on SecurityWeek.

The Russian threat actor known as APT28 (aka Forest Blizzard and Pawn Storm) has been linked to a fresh spear-phishing campaign targeting Ukraine and its allies to deploy a previously undocumented malware suite codenamed PRISMEX. "PRISMEX combines advanced steganography, component object model (COM) hijacking, and legitimate cloud service abuse for command-and-control," Trend Micro

The FBI received over 1 million complaints of malicious activity in 2025, with investment, BEC, and tech support scams causing the highest losses. The post FBI: Cybercrime Losses Neared $21 Billion in 2025 appeared first on SecurityWeek.

Signature Healthcare was forced to cancel some services, and pharmacies are unable to fill prescriptions due to the hacker attack. The post Massachusetts Hospital Diverts Ambulances as Cyberattack Causes Disruption appeared first on SecurityWeek.

Focused on persistence, the botnet does not engage in widespread infection and avoids blacklisted IPs and critical infrastructure entities. The post Evasive Masjesu DDoS Botnet Targets IoT Devices appeared first on SecurityWeek.

The Fragmented State of Modern Enterprise Identity Enterprise IAM is approaching a breaking point. As organizations scale, identity becomes increasingly fragmented across thousands of applications, decentralized teams, machine identities, and autonomous systems. The result is Identity Dark Matter: identity activity that sits outside the visibility of centralized IAM and

The vulnerability allows hackers to upload arbitrary files to a site’s server and achieve remote code execution. The post Hackers Targeting Ninja Forms Vulnerability That Exposes WordPress Sites to Takeover appeared first on SecurityWeek.

The APT28 threat group exploited vulnerable TP-Link and MikroTik routers to conduct adversary-in-the-middle (AitM) attacks. The post US Disrupts Russian Espionage Operation Involving Hacked Routers and DNS Hijacking appeared first on SecurityWeek.

Artificial Intelligence (AI) company Anthropic announced a new cybersecurity initiative called Project Glasswing that will use a preview version of its new frontier model, Claude Mythos, to find and address security vulnerabilities. The model will be used by a small set of organizations, including Amazon Web Services, Apple, Broadcom, Cisco, CrowdStrike,&

The North Korea-linked persistent campaign known as Contagious Interview has spread its tentacles by publishing malicious packages targeting the Go, Rust, and PHP ecosystems. "The threat actor's packages were designed to impersonate legitimate developer tooling [...], while quietly functioning as malware loaders, extending Contagious Interview’s established playbook into a coordinated

Iran-affiliated cyber actors are targeting internet-facing operational technology (OT) devices across critical infrastructures in the U.S., including programmable logic controllers (PLCs), cybersecurity and intelligence agencies warned Tuesday. "These attacks have led to diminished PLC functionality, manipulation of display data and, in some cases, operational disruption and financial

Federal agencies warn attackers are manipulating PLC and SCADA systems across multiple sectors, triggering operational disruptions and raising concerns over broader OT targeting. The post Iran-Linked Hackers Disrupt US Critical Infrastructure via PLC Attacks appeared first on SecurityWeek.

New AI model drives Project Glasswing, a effort to secure critical software before advanced capabilities fall into the wrong hands. The post Anthropic Unveils ‘Claude Mythos’ – A Cybersecurity Breakthrough That Could Also Supercharge Attacks appeared first on SecurityWeek.