An automated roundup of 31 notable cybersecurity article(s) from the last 36 hours, aggregated from 4 source(s). Descriptions are pulled directly from each publisher's feed; follow the links for the full articles.
BleepingComputer
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. [...]
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. [...]
Microsoft says threat actors are ahead in the early AI race
Microsoft says cyberattackers are currently benefiting from artificial intelligence faster than defenders, allowing threat actors to speed up vulnerability discovery, malware development, and post-compromise activity while security teams struggle to keep pace. [...]
Police dismantle KillSec ransomware gang allegedly led by 16-year-old
An international law enforcement operation dubbed "Operation KillSwitch" seized the KillSec ransomware gang's data leak site and servers, led to three arrests, and identified a 16-year-old as the group's alleged administrator. [...]
The Day-One Hole in Zero Trust Architecture
Zero Trust can verify users once they are established, but onboarding creates a gap where organizations must decide who to trust before strong authentication exists. Specops explains why identity verification should begin before credentials, MFA methods, and access are issued.…
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. [...]
Microsoft enables Windows settings backup by default for orgs
Microsoft announced that Windows settings backup and restore is now enabled by default on all Microsoft Entra-joined or Microsoft Entra hybrid-joined enterprise systems upgraded to Windows 11 26H2. [...]
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. [...]
Metamask discloses security incident affecting its infrastructure
On Thursday, cryptocurrency wallet provider MetaMask has disclosed an ongoing infrastructure security incident affecting some of its infrastructure. [...]
Russian state hackers use new RedFlick technique to push malware
The Russian state actor Star Blizzard has been using a new malware installation tactic dubbed "RedFlick" to deploy its signature CosmicPulse backdoor. [...]
DIVD says Zammad zero-days enabled AI-driven network breach
The Dutch Institute for Vulnerability Disclosure (DIVD) says that the breach of its network was possible by exploiting a chain of two zero-day vulnerabilities in the open-source Zammad ticketing system. [...]
Over 543,000 valid credentials exposed in public GitHub repositories
More than 543,000 credentials exposed in public GitHub repositories were still valid in July despite the platform's security measures to prevent accidental leaks of sensitive data. [...]
The Hacker News
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 16-year-old was one of 3 people arrested on…
ThreatsDay: AI-Powered Zero-Day Chain, 543K Live Secrets, Model Inspection RCE and 13 More Stories
This week, the useful words are boring ones: inspect, cache, compile, store, trust. Each sounds harmless. Each can become an attack path when a system does a little more than people expect. A model check can run code. A cache can mix up requests. A public secret can stay useful…
WordPress Backdoor Rebuilds Itself After Cleanup Using Files, Database, and Shared Memory
Cybersecurity researchers have shed light on a WordPress compromise in which threat actors deployed multiple persistence mechanisms to ensure that the final payload kept returning without having to infect the site again. The backdoor has been codenamed SC after the "SC_" markers…
How Financial Services Companies Can Modernize Their Software Supply Chain
Every security leader at a bank, insurer, or asset manager has had a version of this conversation: Security wants to eliminate a class of vulnerabilities. Engineering explains what it would take to upgrade the platform where they live. Somebody prices out the regression testing.…
OpenAI Disrupts Reasoning Extraction Campaign Linked to Moonshot AI Associates
OpenAI on Wednesday said it identified and disrupted a coordinated distillation campaign that was designed to illicitly extract protected reasoning from its artificial intelligence (AI) models. A "core cluster of the activity," going back to the first week of July, has been…
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 exploitation. The vulnerability, tracked as…
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 complex workflows across real-world…
Apple CoreGraphics PoC Emerges as WhatsApp PDF Checks Hint at Possible Delivery Path
Security researchers have published the first public proof-of-concept for CVE-2026-86950, an Apple CoreGraphics flaw Apple says may have been used in attacks against specific targeted individuals. The trigger is a malicious PDF with a crafted embedded font that crashes unpatched…
Bitget Confirms Third-Party Zero-Day Behind $387.5 Million Cryptocurrency Theft
Cryptocurrency exchange Bitget on Wednesday confirmed that attackers who stole $387.5 million last week exploited a zero-day flaw in third-party security products, citing ongoing investigation findings from SlowMist. "Their investigation identified malicious activity involving…
MetaMask Security Incident Prompts Exit of Affected Ethereum Validators
MetaMask on Thursday said it's responding to what it described as an "ongoing security incident" impacting part of its infrastructure. "We are actively addressing and remediating the issue internally, in coordination with external partners and security advisors," the software…
Citrix NetScaler Post-Exploitation Payload Creates Superuser, Maps Web Shell to CSS-Like URLs
Threat actors have been observed exploiting a critical pre-authentication command injection vulnerability in Citrix NetScaler ADC and NetScaler Gateway to drop web shells and attempt theft of configuration data. LevelBlue's Threat Hunt Operations & Research (THOR) team, which…
Dark Reading
Alleged KillSec Ransomware Mastermind a 16-Year-Old
Law enforcement from multiple countries collaborated to disrupt a cybercrime operation that has claimed some 500 victims worldwide in the past two years.
Warlock Ransomware Hits Large Spanish, Portuguese Orgs
A year-old Chinese threat actor looks like a cybercrime gang, acts like a state-associated APT, and attacks organizations in unexpected places.
Malicious Custom GPTs Turn ChatGPT Into RAT Delivery Lure
In yet another ClickFix-style campaign, threat actors abuse legitimate domains from OpenAI and Google to fool unsuspecting users.
Trump, Tech Giants Strike Voluntary AI Safety Accord
The new White House Accord on so-called "Super Intelligence" calls on companies to implement greater controls and oversight over AI safety.
New Swimlane research underscores a paradox: While AI detection and response is essential to giving defenders an edge, one in four security pros say AI limits their skill development.
SANS Internet Storm Center
ISC Stormcast For Friday, October 2nd, 2026 https://isc.sans.edu/podcastdetail/10120, (Fri, Oct 2nd)
ScreenConnect Client (Ab)used by Attackers, (Thu, Oct 1st)
Threat Actors do not always use top-notch techniques or very complex malware to perform their attacks. Sometimes, they just abuse of existing applications...
Not included today: Krebs on Security (no articles in the last 36h)