FulcrumSec on DanSec Daily

Cybersecurity Brief – 2026-08-31

Mon, 31 Aug 2026 00:00:00 +0000

Major Incidents or Breaches

McKesson, a major healthcare company, has confirmed a data breach after the ShinyHunters extortion group claimed responsibility for stealing 284 million records, which reportedly include patient data. The company is responding as the attacker’s deadline for extortion approaches ^[22]^[32].
Berlin city administration has confirmed data theft following a ransomware attack by the Rhysida group. Rhysida claims to have exfiltrated over 5TB of data, including personal information and credentials, and is attempting to extort the city. Berlin authorities have stated they will not pay the ransom ^[11]^[29].
Manchester Airports Group is the subject of a data breach claim by the extortion group FulcrumSec, which alleges theft of over 80GB of data and plans to leak it online ^[27]^[31].
Boston Scientific continues to recover from a cyberattack that caused global network disruption. CrowdStrike and other firms are assisting with the investigation ^[26].

Newly Discovered Vulnerabilities

ServiceNow has patched three critical code injection vulnerabilities that could allow attackers to execute arbitrary code and access or tamper with data ^[21].
Kaspersky has patched a vulnerability in its Endpoint Security product after the exploit “HardBreacher” was released by the threat group Nightmare Eclipse ^[20].
A critical Ruby on Rails vulnerability, named KindaRails2Shell, allows attackers to perform arbitrary file reads to extract secrets and execute code remotely. This flaw is actively being targeted by attackers ^[25].
A security researcher has disclosed nine vulnerabilities affecting ATM encryption and authentication software, highlighting systemic weaknesses in the software supply chain for ATM systems ^[17].

Notable Threat Actor Activity

The threat actor known as Silver Fox is distributing the ValleyRAT backdoor disguised as signed Chinese adware. The malware is run under trusted processes and users are sometimes tricked into adding it to antivirus exclusions ^[1]^[4].
The Aurora (Aur0ra) ransomware group has used SpaceX’s AI-powered coding assistant, Cursor, in attacks against at least ten targets ^[5].
The China-linked cyber espionage group Fire Ant has expanded operations to compromise Cisco IOS XR routers, using them to steal credentials and blind security logs. Fire Ant has also been observed creating unexplained GRE tunnel interfaces on compromised routers, turning them into spying platforms ^[7]^[9].

Trends, Tools, or Tactics of Interest

There is increased use of AI-powered tools and agents in cyberattacks, as demonstrated by Aurora ransomware’s use of Cursor and the need for security teams to treat AI agents as highly privileged identities following incidents involving Hugging Face and Claude ^[5]^[23]^[24].
Offensive security toolkits such as Praetorian are consolidating established workflows into portable Go-based tools, supporting direct pipelines and shared SDKs for red team operations ^[19].
JSCeal, a stealer targeting cryptocurrency applications, is being delivered as compiled V8 bytecode executed by a bundled Node.js runtime, representing a novel malware delivery technique ^[30].

Regulatory or Policy Developments Affecting the Security Industry

A judge has ruled that the Pentagon’s measures against Anthropic, which labeled the company as a supply chain risk, were illegal and baseless. This decision is part of an ongoing legal dispute between Anthropic and the US government ^[28].
The US Department of Justice has corrected a previous statement regarding Chinese cyberattacks, clarifying that US agencies were targets but not confirmed victims ^[8].

Sources

McKesson Confirms Data Breach as Attacker Deadline Looms - securityweek.com
McKesson confirms cyber incident after ShinyHunters claims patient-data theft - malwarebytes.com
Berlin confirms data theft after Rhysida ransomware attack claims - bleepingcomputer.com
Berlin Won’t Pay Extortion Group Claiming Data Theft - securityweek.com
Extortion Group Claims Manchester Airports Group Data Breach - securityweek.com
31th August – Threat Intelligence Report - research.checkpoint.com
Boston Scientific Still Recovering From Cyberattack - securityweek.com
ServiceNow Patches 3 Critical Code Injection Vulnerabilities - securityweek.com
Nightmare Eclipse Drops ‘HardBreacher’ Kaspersky Product Exploit - securityweek.com
Critical Ruby on Rails Vulnerability in Attackers’ Crosshairs - securityweek.com
ATM Flaws Reveal Key Weaknesses in the Software Supply Chain - wired.com
ValleyRAT masquerading as adware - securelist.com
ValleyRAT Backdoor Hides in Signed Adware That Users Add to Antivirus Exclusions - thehackernews.com
Aurora Ransomware Operators Use Cursor AI in Attacks Against 10 Targets - thehackernews.com
China-Linked Fire Ant Hijacks Cisco Routers to Steal Credentials and Blind Security Logs - thehackernews.com
Chinese Fire Ant hackers turn Cisco routers into spying platforms - bleepingcomputer.com
What the Hugging Face Incident Teaches Security Leaders About AI Agent Access - securityweek.com
Anthropic Warns Claude Users of Infostealer Malware Infections - securityweek.com
Praetorian – Offensive Security Tools Built Around Portable Go Workflows - darknet.org.uk
Breaking the Seal: Static Deobfuscation of JSCeal’s Compiled V8 Bytecode - research.checkpoint.com
Judge Says Pentagon’s Measures Against Anthropic Were ‘Illegal and Baseless’ - securityweek.com
DoJ Corrects China Hacking Claim, Says U.S. Agencies Were Targets, Not Victims - thehackernews.com

Cybersecurity Brief – 2026-06-17

Wed, 17 Jun 2026 00:00:00 +0000

Major Incidents or Breaches

Kodak has confirmed a data breach after hackers gained access to company data, with the ShinyHunters extortion gang claiming responsibility. External cybersecurity experts have been engaged to investigate the incident ^[12].
iRhythm, a digital health company, confirmed data theft and a ransom demand after a breach affecting cardiac patients’ medical data ^[35]^[42].
The cybercrime group FulcrumSec claims to have stolen 1.3TB of data from pharmaceutical company Novo Nordisk ^[40].
More than 200 members of Peter Thiel’s ‘Dialog’ Society were exposed through a leak associated with a retreat registration app ^[28].

Newly Discovered Vulnerabilities

Three recently patched vulnerabilities in Fortinet FortiSandbox are being actively exploited in the wild, exposing up to 30,000 devices to compromise. At least one of the flaws was only patched last week ^[9]^[21]^[34].
CISA has warned of an actively exploited maximum-severity vulnerability in the Widget Factory Joomla Content Editor (JCE) that allows PHP code execution ^[4]^[33].
A critical vulnerability in a cPanel plugin (CVE-2026-54420) is being actively exploited, with CISA mandating US government agencies to secure affected servers within three days ^[19].
A flaw in the Google Cloud Vertex AI SDK for Python allowed attackers to hijack machine learning model uploads and execute code in Google’s infrastructure via bucket squatting ^[5].
Chrome and Firefox have received updates to patch multiple critical and high-severity memory safety vulnerabilities that could lead to remote code execution ^[32].
Oracle released its June 2026 Critical Security Patch Update, addressing 245 vulnerabilities across multiple product lines ^[31].
Microsoft is working on a patch for a Defender zero-day vulnerability named “RoguePlanet,” which was disclosed a week ago ^[11].

Notable Threat Actor Activity

The ShinyHunters extortion gang is implicated in the Kodak breach ^[12].
The ransomware and data extortion group Vice Society may be linked to the ClickFix campaign, which is delivering malware loaders such as BabaDeda Loader, Lorem Ipsum Loader, and Potemkin via compromised WordPress sites ^[6]^[27].
DragonForce ransomware operators have used a custom malware, ‘Backdoor.Turn,’ to conceal command-and-control traffic within Microsoft Teams relay infrastructure ^[20].
FishMonger, a China-nexus threat group, has deployed a Windows variant of the SprySOCKS backdoor, previously observed only on Linux, against government targets in Honduras, Taiwan, Thailand, and Pakistan ^[10]^[25].
At least 15 malicious plugins on the JetBrains Marketplace were designed to steal AI API keys from developers ^[13].

Trends, Tools, or Tactics of Interest

The new Rokarolla Android banking trojan targets 217 banking and cryptocurrency applications, utilizes 137 remote commands, and achieves full device control and persistence. It is distributed via fake TikTok and Chrome downloads ^[7]^[14]^[26].
GhostTree attack uses recursive NTFS junctions to create numerous valid Windows file paths, causing Microsoft Defender folder scans to never complete and enabling malware to evade detection ^[17].
The Phantom Stealer malware executes entirely in memory and incorporates anti-analysis techniques to target browser credentials ^[23].
Steam Workshop, via the Wallpaper Engine app, is being abused to distribute malware hidden in wallpaper packages ^[15].
Fileless and evasive malware techniques, as seen in both Phantom Stealer and GhostTree, are increasingly being leveraged to avoid detection by endpoint security tools ^[17]^[23].
144 npm packages associated with the Mastra namespace were compromised via a hijacked contributor account, impacting open-source AI development ecosystems ^[3].
ClickFix campaigns are expanding malware delivery with new loaders and fake update lures, exploiting compromised WordPress sites ^[6]^[27].
94 percent of security incidents involve anonymized infrastructure, and security teams remain largely reactive despite increased access to enrichment and threat intelligence data ^[8].

Regulatory or Policy Developments Affecting the Security Industry

The UK government will require individuals to verify their age with an ID upload or facial scan before creating new social media accounts, effectively banning under-16s from user-to-user social media platforms from spring 2027. Privacy and security experts have raised concerns about age-verification and privacy implications ^[16]^[22].
The US government has imposed export restrictions on Anthropic’s Claude Fable 5 and Mythos 5 AI models, drawing criticism from the security community ^[24]^[29].
US federal authorities have taken down sites hosting nonconsensual deepfake images of famous women ^[43].

Sources

Kodak confirms data breach claimed by ShinyHunters extortion gang - bleepingcomputer.com
iRhythm Confirms Data Stolen in Hack - securityweek.com
Cardiac patients’ medical data stolen and held to ransom - malwarebytes.com
Cybercrime Group Claims Novo Nordisk Hack - securityweek.com
Leak Exposes Members of Peter Thiel’s Secretive ‘Dialog’ Society - wired.com
Attackers Exploit Three Fortinet FortiSandbox Flaws, One Patched Last Week - thehackernews.com
Critical Fortinet FortiSandbox flaws now exploited in attacks - bleepingcomputer.com
3 Recently Patched Fortinet FortiSandbox Vulnerabilities in Hacker Crosshairs - securityweek.com
CISA Warns of Actively Exploited Joomla JCE Flaw Allowing PHP Code Execution - thehackernews.com
Joomla, LiteSpeed Vulnerabilities Exploited in Attacks - securityweek.com
CISA warns of another cPanel plugin flaw exploited in attacks - bleepingcomputer.com
Google Vertex AI SDK Flaw Let Attackers Hijack Model Uploads via Bucket Squatting - thehackernews.com
Chrome and Firefox Updated to Patch Critical, High-Severity Vulnerabilities - securityweek.com
Oracle’s Second Monthly Security Updates Deliver 245 Patches - securityweek.com
Microsoft working on Defender patch for RoguePlanet zero-day - bleepingcomputer.com
ClickFix Campaigns Expand Malware Delivery With New Loaders and Fake Update Lures - thehackernews.com
'Lorem Ipsum' Malware Pivots to ClickFix Delivery - darkreading.com
Ransomware gang abuses Microsoft Teams relays to hide malicious traffic - bleepingcomputer.com
China-Linked SprySOCKS Backdoor Expands to Windows with Driver-Based Stealth - thehackernews.com
SprySOCKS Windows Variant Abuses Kernel Drivers to Evade Detection - darkreading.com
Malicious JetBrains Marketplace plugins steal AI API keys from developers - bleepingcomputer.com
New Rokarolla Android Malware Steals PINs, SMS Codes, and Crypto Wallet Funds - thehackernews.com
New Rokarolla Android malware targets 217 banking, crypto apps - bleepingcomputer.com
Rokarolla Android Trojan Levels Up to Full Device Control, Persistence - darkreading.com
GhostTree Attack Abused Recursive Windows Junctions to Hide Malware - bleepingcomputer.com
Fileless Phantom Stealer Targets Browser Credentials - darkreading.com
Steam Workshop abused to spread malware via Wallpaper Engine app - bleepingcomputer.com
144 Mastra npm Packages Compromised via Hijacked Contributor Account - thehackernews.com
Survey: 94% of Incidents Involve Anonymized Infrastructure. Teams Are Still Reactive - thehackernews.com
UK to require ID or face scan before you can make social media accounts - bleepingcomputer.com
UK Social Media Ban for Minors Has Privacy Experts Worried - darkreading.com
Security Community Slams US Ban on Exporting Mythos, Fable - darkreading.com
‘Dangerous’ AI Models Are Coming No Matter What - wired.com
Deepfake posting sites depicting famous women taken down by feds - malwarebytes.com