Cyber Security News

Hackers have built a Windows backdoor that uses Microsoft 365 for all its native command and control communications. Named Antino, the malware turns Outlook messages and OneDrive files into channels for issuing instructions, moving stolen data, and maintaining access...

Authorities have identified a 16-year-old as the suspected main operator of the KillSec ransomware group after an international law-enforcement operation disrupted the group’s infrastructure and led to three arrests. The coordinated action, involving authorities from nine countries and supported by...

A fake Zoom installer is tricking Mac users into handing over their login passwords and launching CloudSyncD, a newly identified backdoor. The malware hides inside an application that looks familiar, using installation instructions and counterfeit prompts to turn routine...

A China-aligned hacking group tracked as TA419 has impersonated a senior Anthropic employee and well-known policy figures to target US artificial intelligence experts. Proofpoint linked the activity to credential-phishing campaigns aimed at researchers at think tanks, universities, and law...

A China-nexus threat actor is continuing to exploit Microsoft SharePoint Server vulnerabilities to deploy Warlock ransomware, with recent attacks striking essential-service and public-sector organizations across Portuguese- and Spanish-speaking countries. Symantec tracks the operator as Longlegs, while Microsoft uses Storm-2603;...

A WordPress backdoor is bringing deleted malware back within seconds, turning routine cleanup into a cycle of reinfection. Called SC, the infection spreads its working parts across website files, the database, and server memory, allowing surviving components to restore...

Hackers are abusing Microsoft Defender Antivirus exclusions to keep malicious files outside routine security scans. Rather than switching protection off completely, attackers can leave antivirus running while creating gaps around malware staging folders and selected file types. This is an...

A critical vulnerability in Next.js could allow remote code execution in applications that use the Node.js implementation of ImageResponse from the next/og package. The issue, tracked as GHSA-vcvr-r3jv-pc5j, affects Next.js versions 16.2.0 through 16.3.5 and has been fixed in...

Axios has disclosed two high-severity vulnerabilities in its HTTP/2 implementation that could allow attackers to bypass outbound network controls or crash vulnerable Node.js applications. The flaws affect Axios versions 1.13.0 through 1.19.x and have been fixed in version 1.20.0 The...

Hackers are exploiting a serious flaw in internet-facing Zimbra mail servers with specially crafted emails. The weakness lets an outsider run commands on a vulnerable server without logging in or persuading an employee to open a message. The activity centers...