Police Arrest 16-Year-Old Suspected of Running KillSec, Seize Ransomware Leak Site and Servers
Police in Spain have arrested a 16-year-old whom investigators suspect of running the KillSec ransomware group. KillSec is accused of stealing data from organizations and threatening to publish it on its leak site unless they paid. The…
Also covered by BleepingComputer, Dark Reading, HackRead, Help Net Security
2026-014: Critical Vulnerabilities in Citrix NetScaler ADC and Gateway
On 27 September 2026, Citrix published a security bulletin addressing 8 vulnerabilities affecting customer-managed Citrix NetScaler ADC and Citrix NetScaler Gateway, among which 2 critical unauthenticated Remote Code Execution (RCE)…
Also covered by Rapid7 Blog, CSO Online, CERT-FR (ANSSI), Tenable Blog
Safe word: What is it and why do you need one?
AI scams are now hyper-realistic. But there’s one simple way to see through them.
Also covered by Graham Cluley, Dark Reading, Qualys Blog
The State of AI-Enabled Malware August 2026: From Brand Abuse to Agentic Execution
Explore Unit 42 research on AI-enabled malware. Learn how existing behavioral detection and endpoint analytics stop AI-authored code before execution. The post The State of AI-Enabled Malware August 2026: From Brand Abuse to Agentic…
Also covered by Check Point Research, AWS Security Blog, Elastic Security Labs
CISA Adds Exploited Cisco Catalyst SD-WAN Manager Auth Bypass to KEV
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added a critical authentication bypass flaw impacting Cisco Catalyst SD-WAN Manager to its Known Exploited Vulnerabilities (KEV), following reports of active…
Also covered by CISA Known Exploited Vulnerabilities, Rapid7 Blog
ZDI-26-751: Microsoft Windows dxgkrnl Time-Of-Check Time-Of-Use Local Privilege Escalation Vulnerability
This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this…
Also covered by Elastic Security Labs, Reddit r/netsec
Microsoft Patch Tuesday for September 2026 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for September 2026, which includes 973 vulnerabilities affecting a range of products, including 113 that Microsoft marked as "critical."
Also covered by CrowdStrike, Sucuri Blog
A Deep Dive into the GetProcessHandleFromHwnd API
In my previous blog post I mentioned the GetProcessHandleFromHwnd API. This was an API I didn’t know existed until I found a publicly disclosed UAC bypass using the Quick Assist UI Access application. This API looked interesting so I…
Also covered by AWS Security Blog, Bitdefender Labs
GitLab Patches Critical 9.9 AI Gateway Flaw Allowing Command Execution on Self-Hosted Servers
A critical flaw in GitLab's AI Gateway could let a logged-in user with Duo Agent Platform access run commands on the gateway under certain conditions, GitLab said in an advisory. The gateway is the service that connects a GitLab instance…
Also covered by BleepingComputer
'Warlock' ransomware used in attacks on critical infrastructure in Portuguese, Spanish-speaking countries
The group is exploiting a variety of vulnerabilities impacting Microsoft SharePoint, according to a new report from Symantec Threat Hunter Team.
Also covered by SecurityWeek
OpenAI Parts Ways With Three Safety Researchers Over Sensitive Information Mishandling
OpenAI has parted ways with three members of its safety team after they leaked private information in violation of company policies, The Wall Street Journal reported. "We have parted ways with three individuals for violating our policies…
Also covered by TechCrunch (Security)
Microsoft’s X account hacked in crypto pump-and-dump scheme
On Thursday, unknown attackers hijacked the official Microsoft account on X, which has over 13 million followers, in what appeared to be a pump-and-dump scheme promoting a crypto token. [...]
Also covered by SecurityWeek
Fortinet warns of critical FortiMail flaw exploited in zero-day attacks
Fortinet is warning customers of a critical FortiMail vulnerability, tracked as CVE-2026-104286, that is being actively exploited in zero-day attacks to execute unauthorized code or commands on vulnerable devices. [...]
Also covered by SecurityWeek
Autonomous AI agents tried to hack US, Canadian government websites
Autonomous AI agents using aggressive strategies attempted to hack U.S. and Canadian government websites to find school and divorce statistics. [...]
Also covered by SecurityWeek
Kiteworks patches max severity code injection vulnerability
Secure file-sharing software company Kiteworks has released security updates to address 126 vulnerabilities, including a max-severity flaw affecting its Email Protection Gateway (EPG) security solution. [...]
Also covered by Wordfence
Hackers stole Pentagon personnel records of over 3 million people
The Pentagon's Defense Manpower Data Center (DMDC) is notifying millions of military service members that hackers stole their data after breaching the Pentagon's human resources management system in October 2025. [...]
Also covered by TechCrunch (Security)
Google Rolls Out Gemini 4 Argon to Trusted Cyber Defenders, Plans Guardrail-Free Version
Google on Wednesday announced its latest frontier artificial intelligence (AI) model, Gemini 4 Argon, that it said is being rolled out to a set of trusted cyber defenders through its Fairwind Program. "It delivers frontier performance in…
Also covered by CSO Online
CVE-2026-104286 added to CISA KEV — Fortinet FortiMail
Fortinet FortiMail contains a path traversal and an improper neutralization of NULL byte or NULL character vulnerability that may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS…
Also covered by SC Media
MikroTik RouterOS
View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to achieve remote code execution or cause a denial of service. The following versions of MikroTik RouterOS are affected: RouterOS <7.24…
Also covered by CISA Known Exploited Vulnerabilities
Dutch Police Arrest ‘Reformed’ Hacker in Shiny Hunters Investigation
Authorities in the Netherlands have arrested a 23-year-old convicted cybercriminal on suspicion of aiding in data thefts and extortions by the prolific hacker group ShinyHunters. In the days immediately following the suspect's arrest,…
Also covered by TechCrunch (Security)