Emerging Threats
Microsoft Discloses Actively Exploited Defender Vulnerabilities
Microsoft warns of two critical vulnerabilities in its Defender software, one of which is being actively exploited by attackers to gain elevated privileges, and the other causing denial-of-service issues. These flaws, tracked as CVE-2026-41091 and CVE-2026-45498, highlight the need for urgent patching to prevent system compromise.
Cisco Exposes New Zero-Auth Vulnerability in Secure Workload Platform
Cisco has uncovered a critical zero-auth vulnerability in its Secure Workload platform, allowing attackers to access sensitive information and make configuration changes with alarming ease and admin-level privileges. This severe flaw, scoring a perfect 10.0 on the CVSS scale, demands immediate attention to prevent exploitation.
Grafana Breach Exposed by TanStack Supply Chain Attack
Grafana Labs revealed that a supply chain attack led to an unauthorized download of its codebase, exposing a vulnerability that allowed attackers to gain access to its GitHub repositories through a missed workflow token. The breach was detected on May 11, with the company swiftly rotating tokens, but unfortunately, one was overlooked.
Microsoft Disrupts Zero-Day Attacks with Defender Patch Rollout
Microsoft is taking swift action to protect its users from zero-day attacks with an emergency patch rollout for its Defender software, ensuring that even the most vulnerable systems are safeguarded. The update addresses two critical vulnerabilities that were being actively exploited by hackers.
GitHub Breach Exposes 3,800 Repos to TanStack Supply-Chain Attack
A single malicious Visual Studio Code extension, Nx Console version 18.95.0, was enough to spark a GitHub breach that exposed 3,800 internal repositories to a TanStack supply-chain attack. The poisoned extension was live on marketplaces for just 54 minutes, but long enough to steal credentials from a developer's machine.
Inactive User Account Enables Hackers to Control City's Water System
A simple mistake of leaving a former employee's user account active allowed hackers to take control of a city's water system, highlighting the importance of promptly disabling access for departed staff. This "zombie" account proved to be the vulnerable entry point that attackers exploited to wreak havoc on municipal operations.
GitHub Breach Exposes 3,800 Repositories via Malicious VS Code Extension
GitHub's security chief confirms that customer data remains safe, with no evidence of impact outside of GitHub's internal repositories. The breach originated from a poisoned VS Code extension installed on a compromised employee device, allowing attackers to steal credentials.
GitHub Discloses Breach from Poisoned VS Code Extension
GitHub swiftly detected and contained a security breach that originated from a tainted Visual Studio Code extension, taking immediate action to remove the malicious version and isolate the affected endpoint. The breach appears to be limited to GitHub's internal repositories, with the company rotating critical secrets and conducting a thorough investigation.
CISA Exposes Sensitive Data in Unsecured GitHub Repository
A shocking security lapse was uncovered when a GitGuardian researcher stumbled upon a public GitHub repository containing 844 MB of sensitive production infrastructure material from a national agency, left exposed for a staggering six months. This alarming data leak highlights the gravity of unsecured data, with expert Guillaume Valadon describing it as one of the most serious secrets leaks he's ever seen.
Smaller Healthcare Providers Targeted in Rising Wave of Cyberattacks
Smaller healthcare providers are being hit hard by a rising wave of cyberattacks, with eight recent hacking incidents affecting nearly 2 million individuals. These breaches, impacting medical practices across the US, are a stark reminder that no healthcare organization is immune to the threat of cyber breaches.
Hackers Exploit SonicWall VPN Flaw to Bypass MFA
In a shocking exploit, hackers have successfully bypassed multi-factor authentication on SonicWall VPN devices, breaching security in as little as 30 minutes. ReliaQuest researchers detected the first in-the-wild exploitation of CVE-2024-12802, warning of a swift and stealthy threat.
Ukraine Cracks Down on Infostealer Operator Linked to 28,000 Stolen Accounts
Ukrainian cyberpolice, in collaboration with US law enforcement, have cracked down on an 18-year-old suspect behind a massive infostealer malware campaign that compromised 28,000 accounts, with over 5,800 used for fraudulent activities. The suspect allegedly ran the operation, selling stolen session data from a California online store between 2024 and 2025.
GitHub Breach Exposes 3,800 Internal Repositories
GitHub has confirmed a significant breach, revealing that hackers made off with approximately 3,800 internal repositories after a developer fell victim to a poisoned VS Code script. Fortunately, the company assures that customer data appears to be safe, and the incident seems to be contained within GitHub's internal systems.
Grafana Breach Exposes Missed Security Step After TanStack Attack
A single misstep in Grafana's security protocol allowed attackers to gain access to its GitHub repositories, following a supply-chain incident involving malicious TanStack packages. A missed GitHub workflow token proved to be the key that enabled the breach.
Android Malware Campaign Silently Invoices Users via Fake Apps
Malware hidden in nearly 250 fake Android apps has been silently invoicing users for premium services, with victims largely unaware of the charges. The sneaky campaign, dubbed Premium Deception, targeted subscribers in several countries, including Malaysia, Thailand, Romania, and Croatia, over a 10-month period.
Microsoft Disrupts Malware-Signing Service Used in Ransomware Attacks
Microsoft swooped in to shut down a notorious malware-signing service, seizing the website signspace.cloud and taking down hundreds of virtual machines used to fuel ransomware attacks. This bold move, dubbed OpFauxSign, crippled a key operation run by the threat actor Fox Tempest, which had been using Microsoft's own system against them since May 2025.
Mini Shai-Hulud Worm Targets AntV Ecosystem with Coordinated npm Package Attack
In a shocking one-hour surge, 639 malicious versions were pushed across 323 unique npm packages, crippling the AntV ecosystem with a massive coordinated attack linked to the Mini Shai-Hulud worm. This brazen move was designed not only to spread chaos but also to slow down analysis and detection efforts.
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.
GitHub Breach Exposes Internal Repositories
GitHub has confirmed a cyber incident that exposed its internal repositories, sparking concerns about the security of code and sensitive data. The breach raises questions about the potential impact on users and the measures being taken to prevent future incidents.
Webworm APT Expands European Reach with Evolved Tactics
Meet Webworm, a China-aligned APT group that's now setting its sights on European governments and beyond, with a semi-opportunistic approach that's taken its targets to Belgium, Italy, Poland, Serbia, Spain, and even South Africa. This threat actor's evolved tactics signal a concerning expansion of its reach.
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.
GitHub Hit by Internal Repo Breach via Malicious VS Code Extension
GitHub's internal repositories were breached after a malicious Visual Studio Code extension was used to launch the attack, but thankfully, customer data appears to be safe. The incident has left users wondering what else may have been compromised.
Typosquatting Evolves Into Supply Chain Threat
Typosquatting has morphed into a sinister supply chain threat, with attackers now embedding malicious lookalike domains within legitimate third-party scripts to intercept sensitive data. This alarming evolution has led to devastating attacks, such as the Trust Wallet compromise, where 2,500 wallets were drained in just 48 hours.