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Malvertisers Exploit Code Signing in TamperedChef Malware Campaigns
Meet the sneaky malware campaign that's been flying under the radar, leveraging polished marketing tactics and code signing to spread its malicious reach - with over 4,000 samples and 100 unique variants uncovered across three distinct clusters of activity.
Webworm Expands Arsenal with EchoCreep, GraphWorm Backdoors
Meet Webworm's latest tricks: EchoCreep and GraphWorm, two custom backdoors that let the China-aligned actor control and manipulate systems using unconventional channels like Discord and Microsoft Graph API. These new tools enable file uploads, downloads, and command execution, showcasing Webworm's creative approach to cyber threats.
AI Botnets Fuel DDoS Surge in Financial Sector
The financial sector saw a staggering 2.41 billion network- and transport-layer denial-of-service attacks in 2025, with banking bearing the brunt, accounting for 60% of total web attacks and over 80% of API-related incidents. TurboMirai, a powerful AI botnet, was a key driver of this alarming surge, fueling attacks that lasted a whopping 738% longer than usual.
Barracuda Warns of CypherLoc Scareware Targeting Millions
Millions of users are under attack by the CypherLoc scareware, with Barracuda researchers tracking around 2.8 million attacks since January 2026 alone. This staggering number reveals a coordinated and widespread campaign that's putting tens of millions of people at risk.
GitHub Breach Exposes 3,800 Repos via Malicious VSCode Extension
GitHub recently uncovered a sneaky attack involving a tainted VS Code extension that compromised an employee's device, putting 3,800 repositories at risk. The breach was quickly contained, but not before some internal repositories were exfiltrated.
Malicious Android Apps Fuel 659M Daily Ad Fraud Bid Requests
Meet Trapdoor, a massive ad fraud scam driven by 455 malicious Android apps that generated a whopping 659 million daily bid requests at its peak, all while hiding in plain sight as harmless utilities like PDF viewers and file managers. These fake apps tricked users into installing malware, unleashing a hidden ad fraud operation controlled by 183 threat actor-owned domains.
ChromaDB Flaw Enables Server Hijacking via AI Model Exploit
A newly discovered vulnerability, CVE-2026-45829, in ChromaDB's Python FastAPI variant allows hackers to hijack servers by exploiting AI models, with a security expert noting that authentication is present but poorly placed. This flaw lets unauthenticated attackers run arbitrary code on exposed servers by cleverly manipulating API endpoints.
Microsoft Disrupts Cybercrime Service Selling Code-Signing Certificates to Ransomware Gangs
Microsoft has disrupted a notorious cybercrime operation, dubbed Fox Tempest, that sold code-signing certificates to ransomware gangs, allowing them to disguise malware as legitimate Windows software. The operation, which created over 580 fake Microsoft accounts, has been linked to two individuals, John Doe 1 and John Doe 2, who allegedly traded in real, Microsoft-issued code-signing credentials.
Microsoft Disrupts Malware-Signing Service Used by Ransomware Gangs
Microsoft cracked down on a notorious malware-signing service used by ransomware gangs, disrupting the operations of Fox Tempest, a financially motivated group that generated millions of dollars in profits by selling trust to cybercriminals. The group had created over 1,000 code-signing certificates and hundreds of Azure tenants to support its industrial-scale scheme.
Microsoft Abuses Self-Service Password Reset in Azure Data Theft Attacks
Microsoft warns that hackers are using clever social engineering tactics and exploiting self-service password reset features to drain sensitive data from high-value Azure assets. By tricking users into approving multi-factor authentication prompts, attackers can gain access to production Microsoft 365 and Azure environments.
Trapdoor Android Ad Fraud Scheme Exposes 455 Malicious Apps
Meet Trapdoor, a massive Android ad fraud scheme that used 455 malicious apps to generate a staggering 659 million daily bid requests, fueling a self-sustaining machine that turned innocent installs into big bucks. This complex operation was uncovered by HUMAN's Satori Threat Intelligence and Research Team, shedding light on a pipeline for multi-stage fraud.
Microsoft Disrupts Malware Signing Service Used by Ransomware Groups
Microsoft cracked down on a sophisticated malware signing service run by a group called Fox Tempest, which helped ransomware gangs disguise their malicious programs as legitimate software. This service was like a master forgery operation, creating counterfeit digital signatures that even experts struggled to spot.
Malware Campaign Compromises Hundreds of npm Packages
A new, highly aggressive malware campaign, linked to the notorious TeamPCP group, has infected hundreds of npm packages, putting countless environments at risk of exposure. If you're concerned about potential damage, take immediate action to rotate secrets, remove persistence artifacts, and review recent publish activity.
Microsoft Disrupts Fox Tempest's Ransomware-Enabling Code-Signing Service
Microsoft's Digital Crimes Unit has successfully disrupted a notorious code-signing service used by cybercriminals, including the group behind Fox Tempest, to create fake IDs and gain easy access to systems. This operation has effectively shut down a key tool used by hackers to spread ransomware and malware.
Microsoft Utility MSHTA Fuels Malware Surge via Lumma Stealer Campaigns
Malware campaigns are on the rise, fueled by the Microsoft Utility MSHTA, which is being exploited to spread info stealers like Lumma Stealer and Amatera. This sneaky tactic is just the latest example of how cybercriminals are abusing a long-standing Windows feature to wreak havoc.
OAuth Grants Expose Hidden Risk Below MFA Perimeter
In just five weeks, a phishing-as-a-service platform called EvilTokens compromised over 340 Microsoft 365 organizations across five countries by exploiting a clever trick: instead of stealing passwords, it convinced users to hand over OAuth refresh tokens, granting attackers long-term access to sensitive data like mailboxes, drives, and calendars. This sneaky tactic allowed hackers to bypass traditional security measures, including multi-factor authentication.
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Agentic AI Turbo Boosts Mobile App Attacks
The alarming rise of mobile app attacks is no longer looming on the horizon - it's here, with a staggering 87% of monitored apps facing threats in 2026, a drastic jump from 55% in 2022, fueled by the rapid adoption of AI models. This explosive growth in attacks is a wake-up call for businesses to bolster their mobile app security.
Reaper Stealer Targets macOS Users with Password, Wallet Theft and Backdoor Attacks
macOS users beware: Reaper Stealer malware is on the loose, stealing passwords, crypto-wallets, and installing backdoors on infected machines. This triple-threat attack puts Apple platform users and their defenders on high alert.
INTERPOL Disrupts Cybercrime Networks with 'Operation Ramz' Arrests
In a major crackdown on cybercrime, INTERPOL's Operation Ramz has led to over 200 arrests and identified 382 suspects across 13 countries in the Middle East and North Africa, disrupting phishing, malware, and online fraud networks that cost the region dearly. The operation resulted in the seizure of 53 servers and uncovered nearly 8,000 intelligence packages linked to over 3,800 victims.
Shai-Hulud worm infects another npm package
A copycat of the notorious Shai-Hulud worm has struck again, infecting another npm package by exploiting a GitHub Actions misconfiguration. This latest attack follows a similar pattern that recently prompted TanStack to rethink its approach to accepting outside code contributions.
SHub Infostealer Variant Reaper Exploits macOS Security Updates
Researchers at SentinelOne have uncovered a sneaky new variant of the SHub macOS infostealer, called Reaper, which cleverly bypasses Apple's latest security updates by using a malicious AppleScript to trick users. This crafty malware uses fake installers to lure victims in, making it a serious threat to macOS users.
Shai-Hulud Malware Fuels npm Infostealer Campaign
Malicious actors have unleashed a new wave of chaos with the Shai-Hulud malware, using typosquatting tactics to spread four malicious npm packages that can steal sensitive info and wreak havoc on systems. The packages, published under the account deadcode09284814, masquerade as legitimate tools, but are actually designed to siphon off credentials, cloud configs, and more.
Ransomware Attacks Surge as Clop Gang Dominates Threat Landscape
Ransomware attacks have skyrocketed, with over 343 million blocked by Kaspersky products in just the first quarter of 2026 alone, highlighting a surge in threats from the notorious Clop gang and other malicious players. This alarming trend underscores a quarter marked by intensified ransomware activity and rapidly evolving cyber threats.
Mobile Malware Attacks Drop, Banking Trojans Surge.
Mobile malware attacks may be on the decline, but banking Trojans are surging, with over 162,000 malicious packages detected in Q1 2026, putting your financial security at risk. Kaspersky's Q1 2026 report reveals a concerning shift in mobile threats, with 306,070 Android malware samples and 439 mobile ransomware Trojans also discovered.