Welcome to your weekly threat intelligence briefing. Between May 18 and May 24, 2026, security teams faced...
Do Son
Do Son is the Founder and Editor of SecurityOnline.info. Working in cybersecurity since 2013, he reports on vulnerabilities, malware, and emerging threats, providing timely analysis to help organizations and individuals stay ahead of evolving risks.
In late 2025, Mandiant responded to a major security incident involving a compromised web server. Specifically, the...
Open-source software repositories remain a top target for modern cybercriminals. Recently, Socket’s Threat Research Team uncovered a...
The Satori Threat Intelligence and Research Team at HUMAN has successfully disrupted a massive ad fraud and...
Microsoft’s Digital Crimes Unit (DCU) has delivered a massive blow to the cybercrime underground. In May 2026,...
A sophisticated, highly focused banking trojan is actively undermining the security controls of financial institutions across South...
NLnet Labs has released a major security update for its popular Unbound DNS resolver software. The release...
Kopia serves as a popular open-source backup and restore tool for secure data snapshots. However, security researchers...
The TYPO3 project has announced a critical security vulnerability affecting a popular third-party extension. The advisory, tagged...
The FreeBSD Project has issued a sweeping set of seven security advisories resolving highly critical vulnerabilities nested...
F5 has published an urgent security advisory regarding a severe flaw in NGINX Plus and NGINX Open...
Code security is becoming one of the most difficult operational problems in modern software development, not because...
ConnectWise recently disclosed a critical security flaw affecting its remote monitoring software. Specifically, this ConnectWise Automate vulnerability...
Security researchers have discovered a stealthy cloud threat hiding inside enterprise cloud environments. Specifically, FortiGuard Labs recently...
Security teams must address a newly disclosed flaw in the Angular web ecosystem. Specifically, developers uncovered an...
A dangerous new ValleyRAT malware campaign is currently targeting unsuspecting corporate users across the internet. Specifically, threat...
International law enforcement agencies have achieved a massive victory against underground ransomware networks. Specifically, authorities completely dismantled...
Amidst the escalating anxieties surrounding the security implications of artificial intelligence, a subset of the industry is...
Security researchers at Socket have uncovered a coordinated attack targeting PHP Composer packages by hiding malicious JavaScript...
A major software supply-chain storm is brewing in the PHP ecosystem. Security firm Socket has exposed a...