SignalSec: Trending Cyber News
Latest threats, advisories, and industry developments
cPanel CVE-2026-41940 Under Active Exploitation to Deploy Filemanager Backdoor
A threat actor named Mr_Rot13 has been attributed to the exploitation of a recently disclosed critical cPanel flaw to deploy a backdoor codenamed Filemanager on compromised environments. The attack exploits CVE-2026-41940, a vulnerability impacting cPanel and WebHost Manager (WHM) that could result ...
Frame Security Emerges From Stealth With $50M for Awareness and Training Platform
Team8, Index Ventures, Picture Capital, Elad Gil, Cerca Partners, and Tesonet invested in Frame Security. The post Frame Security Emerges From Stealth With $50M for Awareness and Training Platform appeared first on SecurityWeek.
Anthropic’s bug-hunting Mythos was greatest marketing stunt ever, says cURL creator
After all that hype, AI scanner found one low-severity cURL flaw
Hackers Used AI to Develop First Known Zero-Day 2FA Bypass for Mass Exploitation
Google on Monday disclosed that it identified an unknown threat actor using a zero-day exploit that it said was likely developed with an artificial intelligence (AI) system, marking the first time the technology has been put to use in the wild in a malicious context for vulnerability discovery and e...
Instructure confirms hackers used Canvas flaw to deface portals
Education technology giant Instructure has confirmed that a security vulnerability allowed hackers to modify Canvas login portals and leave an extortion message. [...]
BWH Hotels guests warned after reservation data checks out with cybercrooks
Customers urged to keep an eye out for phisherfolk
Build Application Firewalls Aim to Stop the Next Supply Chain Attack
Rather than scanning code alone, Build Application Firewalls inspect runtime behavior inside the software build pipeline. The post Build Application Firewalls Aim to Stop the Next Supply Chain Attack appeared first on SecurityWeek.
Why Changing Passwords Doesn’t End an Active Directory Breach
Resetting a password doesn't always remove attackers from Active Directory. Specops Software explains how cached credentials and Kerberos tickets can keep attackers authenticated after a reset. [...]
Google Detects First AI-Generated Zero-Day Exploit
The zero-day was designed to bypass 2FA and it was developed by a prominent cybercrime group. The post Google Detects First AI-Generated Zero-Day Exploit appeared first on SecurityWeek.
Google: Hackers used AI to develop zero-day exploit for web admin tool
Researchers at Google Threat Intelligence Group (GTIG) say that a zero-day exploit targeting a popular open-source web administration tool was likely generated using AI. [...]
Google spotted an AI-developed zero-day before attackers could use it
Researchers found artifacts in the code that proved AI was heavily involved. A prominent cybercrime group planned to exploit the zero-day en masse for financial gain. The post Google spotted an AI-developed zero-day before attackers could use it appeared first on CyberScoop.
⚡ Weekly Recap: Linux Rootkit, macOS Crypto Stealer, WebSocket Skimmers and More
Rough Monday. Somebody poisoned a trusted download again, somebody else turned cloud servers into public housing, and a few crews are still getting into boxes with bugs that should’ve died years ago — the same old holes, same lazy access paths, same “how the hell is this still open” feeling. One rep...
Webinar this week: Prevention alone is not enough against modern attacks
This upcoming webinar explores how organizations need to combine security, backups, and recovery planning to reduce the impact of modern cyberattacks. [...]
Checkmarx tackles another TeamPCP intrusion as Jenkins plugin sabotaged
Cybercrooks ruin engineers' weekends with Saturday attack
Checkmarx tackles another TeamPCP intrusion as Jenkins plugin sabotaged
Cybercrooks ruin engineers' weekends with Saturday attack
Skoda Data Breach Hits Online Shop Customers
Using a vulnerability in the portal, hackers accessed names, addresses, email addresses, and phone numbers. The post Skoda Data Breach Hits Online Shop Customers appeared first on SecurityWeek.
Your Purple Team Isn't Purple — It's Just Red and Blue in the Same Room
Defending a network at 2 am looks a lot like this: an analyst copy-pasting a hash from a PDF into a SIEM query. A red team script is being rewritten by hand so the blue team can use it. A patch waiting on a change-approval window that's longer than the exploitation window itself. Nobody in that chai...
Cloudflare Lays Off 1,100 Employees in AI-Driven Restructuring
The company topped revenue and earnings forecasts for the first quarter of 2026, but its shares plunged more than 20%. The post Cloudflare Lays Off 1,100 Employees in AI-Driven Restructuring appeared first on SecurityWeek.
SailPoint Discloses GitHub Repository Hack
The incident occurred on April 20 and did not affect customer data in the company’s production and staging environments. The post SailPoint Discloses GitHub Repository Hack appeared first on SecurityWeek.
The missing cybersecurity leader in small business
As AI and quantum threats target the backbone of the American economy, Washington must provide the guidance and incentives necessary for SMBs to access executive-level cyber expertise. The post The missing cybersecurity leader in small business appeared first on CyberScoop.
Checkmarx Jenkins AST Plugin Compromised in Supply Chain Attack
A malicious version of the plugin was published to the Jenkins Marketplace late last week. The post Checkmarx Jenkins AST Plugin Compromised in Supply Chain Attack appeared first on SecurityWeek.
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TrickMo Android banker adopts TON blockchain for covert comms
A new variant of the TrickMo Android banking malware, delivered in campaigns targeting users across Europe, introduces new commands and uses The Open Network (TON) for stealthy command-and-control communications. [...]
Canvas System Is Online After a Cyberattack Disrupted Thousands of Schools
Tens of thousands of students studying for final exams around the world have regained access to a key online learning system after a cyberattack had earlier knocked it offline. The post Canvas System Is Online After a Cyberattack Disrupted Thousands of Schools appeared first on SecurityWeek.
Taiwan's train cyber-trauma reveals a global system that’s coming off the tracks
That’s not a radio. THIS is a radio
New ‘Dirty Frag’ Linux Vulnerability Possibly Exploited in Attacks
Also called Copy Fail 2 and tracked as CVE-2026-43284 and CVE-2026-43500, the exploit was disclosed before a patch was released. The post New ‘Dirty Frag’ Linux Vulnerability Possibly Exploited in Attacks appeared first on SecurityWeek.
Resurrected ‘Crimenetwork’ Marketplace Taken Down, Administrator Arrested
The second iteration of the German-speaking online crime marketplace had over 22,000 users and more than 100 sellers. The post Resurrected ‘Crimenetwork’ Marketplace Taken Down, Administrator Arrested appeared first on SecurityWeek.
Fake OpenAI Privacy Filter Repo Hits #1 on Hugging Face, Draws 244K Downloads
A malicious Hugging Face repository managed to take a spot in the platform's trending list by impersonating OpenAI's Privacy Filter open-weight model to deliver a Rust-based information stealer to Windows users. The project, named Open-OSS/privacy-filter, masqueraded as its legitimate counterpart, r...
Over 500 Organizations Hit in Years-Long Phishing Campaign
Victims span across the aviation, critical infrastructure, energy, logistics, public administration, and technology sectors. The post Over 500 Organizations Hit in Years-Long Phishing Campaign appeared first on SecurityWeek.
Hackers abuse Google ads, Claude.ai chats to push Mac malware
Attackers are abusing Google Ads and legitimate Claude.ai shared chats in an active malvertising campaign. Users searching for "Claude mac download" may come across sponsored search results that list claude.ai as the target website, but lead to instructions that install malware on their Mac. [...]
Police shut down reboot of Crimenetwork marketplace, arrest admin
German authorities have shut down a relaunch version of the criminal marketplace 'Crimenetwork' that generated more than 3.6 million euros, and arrested its operator. [...]
Ollama Out-of-Bounds Read Vulnerability Allows Remote Process Memory Leak
Cybersecurity researchers have disclosed a critical security vulnerability in Ollama that, if successfully exploited, could allow a remote, unauthenticated attacker to leak its entire process memory. The out-of-bounds read flaw, which likely impacts over 300,000 servers globally, is tracked as CVE-2...
JDownloader site hacked to replace installers with Python RAT malware
The website for the popular JDownloader download manager was compromised earlier this week to distribute malicious Windows and Linux installers, with the Windows payload found deploying a Python-based remote access trojan. [...]
Fake OpenAI repository on Hugging Face pushes infostealer malware
A malicious Hugging Face repository that reached the platform's trending list impersonated OpenAI's "Privacy Filter" project to deliver information-stealing malware to Windows users. [...]
Hackable Robot Lawn Mower Unlocks a New Nightmare
Plus: Meta officially kills encrypted Instagram DMs, the Trump administration targets “violent left wing extremists,” leaked documents reveal Russia's school for elite hackers, and more.
cPanel, WHM Release Fixes for Three New Vulnerabilities — Patch Now
cPanel has released updates to address three vulnerabilities in cPanel and Web Host Manager (WHM) that could be exploited to achieve privilege escalation, code execution, and denial-of-service. The list of vulnerabilities is as follows - CVE-2026-29201 (CVSS score: 4.3) - An insufficient input vali...
TCLBANKER Banking Trojan Targets Financial Platforms via WhatsApp and Outlook Worms
Threat hunters have flagged a previously undocumented Brazilian banking trojan dubbed TCLBANKER that's capable of targeting 59 banking, fintech, and cryptocurrency platforms. The activity is being tracked by Elastic Security Labs under the moniker REF3076. The malware family is assessed to be a majo...
Worm rubs out competitor's malware, then takes control
All your compromised credentials are belong to us now instead of the other gang
Sen. Schumer seeks DHS plan on AI cyber coordination with state, local governments
The Senate’s top Democrat is worried about smaller government entities being left behind as AI models advance hacking risks. The post Sen. Schumer seeks DHS plan on AI cyber coordination with state, local governments appeared first on CyberScoop.
NVIDIA confirms GeForce NOW data breach affecting Armenian users
NVIDIA has confirmed in a statement for BleepingComputer that GeForce NOW user information has been exposed in a data breach. [...]
Fake Call History Apps Stole Payments From Users After 7.3 Million Play Store Downloads
Cybersecurity researchers have discovered fraudulent apps on the official Google Play Store for Android that falsely claimed to offer access to call histories for any phone number, only to trick users into joining a subscription that provided fake data and incurred financial loss. The 28 apps have c...
In Other News: Train Hacker Arrested, PamDOORa Linux Backdoor, New CISA Director Frontrunner
Other noteworthy stories that might have slipped under the radar: US gov targets 72-hour patch cycles, malware uses Windows Phone Link to steal OTPs, spy operation targets Eurasian drone industry. The post In Other News: Train Hacker Arrested, PamDOORa Linux Backdoor, New CISA Director Frontrunner a...
Why More Analysts Won’t Solve Your SOC’s Alert Problem
Attackers move faster than overwhelmed SOC teams can realistically investigate alerts. Prophet Security breaks down how AI can help analysts investigate alerts faster and focus on real threats. [...]
'Dirty Frag' Linux flaw one-ups CopyFail with no patches and public root exploit
Broken disclosure embargo left admins facing a fresh root-level flaw with no CVE
ShinyHunters claims nearly 9,000 schools affected by Canvas data breach
The group that stole data from Instructure users claims that it will release the data of students from nearly 9,000 education institutions around the country. The post ShinyHunters claims nearly 9,000 schools affected by Canvas data breach appeared first on CyberScoop.
Trellix source code breach claimed by RansomHouse hackers
The attack on the Trellix source code repository disclosed last week has been claimed by the RansomHouse threat group, which leaked a small set of images as proof of the intrusion. [...]
Flaw in Claude’s Chrome extension allowed ‘any’ other plugin to hijack victims’ AI
Agentic AI is more popular than ever, but researchers keep finding trivial ways to hijack LLMs for nefarious purposes. The post Flaw in Claude’s Chrome extension allowed ‘any’ other plugin to hijack victims’ AI appeared first on CyberScoop.
Meta U-turns on encryption push for Instagram as DMs go plaintext
After years of insisting end-to-end encryption was the future of online comms, Zuckcorp has handed itself full visibility into user chats once again
CISA gives feds four days to patch Ivanti flaw exploited as zero-day
CISA has given U.S. federal agencies four days to secure their networks against a high-severity vulnerability in Ivanti Endpoint Manager Mobile (EPMM) exploited in zero-day attacks. [...]
Polish Security Agency Reports ICS Breaches at Five Water Treatment Plants
The hackers gained the ability to modify equipment operational parameters, creating a direct risk to the public water supply. The post Polish Security Agency Reports ICS Breaches at Five Water Treatment Plants appeared first on SecurityWeek.
AI Firm Braintrust Prompts API Key Rotation After Data Breach
Hackers accessed one of the company’s AWS accounts and compromised AI provider secrets stored in Braintrust. The post AI Firm Braintrust Prompts API Key Rotation After Data Breach appeared first on SecurityWeek.