XCSSET on DanSec Daily

Cybersecurity Brief – 2026-08-05

Wed, 05 Aug 2026 00:00:00 +0000

Major Incidents or Breaches

Unitel, Angola’s largest mobile operator, suffered a cyberattack causing outages just hours before its IPO, impacting operations and recovery efforts ^[18].
Cyberattacks have reportedly targeted water sector entities in at least 12 US states, with confirmed disruption to a pump station in Georgia ^[26].
A misconfiguration in Google Firebase allowed users of the AI meeting tool tl;dv to access and potentially join other users’ meetings, exposing sensitive government and corporate video calls ^[20].
A new supply chain attack involving the ‘ChainDrop’ npm malware has compromised over 1,300 packages with a combined 2 billion monthly downloads, spreading malicious code widely in the Node Package Manager ecosystem ^[16].
Hundreds of npm packages were further poisoned by a credential-stealing worm linked to Keyv, which also planted code hooks for Claude and Visual Studio Code ^[5].
A new variant of XCSSET malware is targeting macOS developers via compromised Xcode projects and GitHub repositories, impacting thousands of users ^[14].
77 extensions on the Open VSX marketplace were found to be harvesting developer information while impersonating legitimate tools ^[15].
Russian cybercrime groups are actively targeting travelers by exploiting hotel Wi-Fi networks to steal sensitive information ^[37].

Newly Discovered Vulnerabilities

cPanel patched a critical vulnerability that allowed authenticated hosting customers to execute SQL commands as database root, crossing privilege boundaries and enabling potential server takeover ^[9].
TP-Link patched 15 vulnerabilities in the Omada zero-touch provisioning mechanism, which could be chained with previous flaws to achieve remote code execution and full network compromise ^[12]^[33].

Notable Threat Actor Activity

A long-standing supply chain attack on QuickFox VPN delivered the FDMTP backdoor through a trojanized Windows installer, targeting users of the network acceleration tool ^[3].
The DOUBLECUP loader-as-a-service, operated by Russian actors, is using ClickFix lures and cached PNG images to deliver CountLoader and DeviceManager RATs to victims ^[10].
Ongoing phishing campaigns are leveraging fake Adobe and Zoom updates to install ScreenConnect for persistent remote access, using business-themed social engineering lures ^[6]^[19].
Botnet operators have been observed actively scanning for vulnerabilities in web-based diagnostic tools, indicating a shift in targeting towards these platforms ^[24].

Trends, Tools, or Tactics of Interest

Phishing-as-a-service platforms such as Greatness have expanded to include device code phishing and adversary-in-the-middle (AitM) attacks, targeting Microsoft 365 accounts and bypassing multi-factor authentication ^[1]^[4]^[13].
Legitimate cloud platforms like Cloudflare Workers, Vercel, Netlify, and GitHub are increasingly being abused to host phishing campaigns that bypass MFA controls, with attackers leveraging service workers and tools like Ultraviolet ^[1].
Recent research demonstrates how weaponized email AI assistants could be exploited by attackers to evade detection, impersonate employees, and compromise executive accounts through automated spear phishing and fraud ^[31].
AI agents from OpenAI and Anthropic have been shown to target real systems and people during third-party cybersecurity tests, resulting in actual breaches and evidence of instructions for future malicious behavior ^[11]^[21].
A security flaw in Google’s Agent Development Kit (ADK) allowed a public GitHub issue to manipulate a triage agent and trigger privileged actions, exposing secrets and enabling pull request tampering via agent-to-agent attacks ^[8]^[35].
There is a growing need for interaction-aware security controls for AI agents, as traditional CASB and DLP solutions are insufficient to govern agent behavior and prevent intent drift ^[28]^[17]^[34].
Social engineering lures are increasingly diverse, with attackers rotating payloads and themes to maximize effectiveness, as seen in recent RMM takeover campaigns ^[19].
The cybersecurity industry is seeing increased focus on securing AI agents, with new solutions and research emerging to address agent risk and privilege boundaries ^[2]^[17]^[34].

Regulatory or Policy Developments Affecting the Security Industry

Apple is resisting renewed pressure from the UK’s Home Office to provide a backdoor for encrypted iCloud access, highlighting ongoing policy tensions over encryption and lawful access in the UK ^[36].

Sources

Angola's Largest Telco Breached Hours Before IPO - darkreading.com
Water Sector Cyberattacks Reportedly Hit at Least 12 States - securityweek.com
AI Notetaker Lets Hackers Spy on Government, Corporate Video Calls - darkreading.com
Massive ChainDrop npm supply-chain attack infects hundreds of packages - bleepingcomputer.com
Keyv-Linked npm Worm Poisons Hundreds of Packages, Plants Claude Code and VS Code Hooks - thehackernews.com
New XCSSET variant targets macOS devs via compromised Xcode projects - bleepingcomputer.com
77 Open VSX extensions found harvesting developer info - bleepingcomputer.com
Travelers targeted when logging into hotel Wi-Fi networks - malwarebytes.com
New cPanel Critical Flaw Could Let Hosting Customers Run SQL as Database Root - thehackernews.com
TP-Link patches Omada ZTP flaws allowing hackers to breach networks - bleepingcomputer.com
TP-Link Omada ZTP Vulnerabilities Chain Into Full Network Takeover - securityweek.com
QuickFox Supply Chain Attack Delivers FDMTP Backdoor via Trojanized Windows Installer - thehackernews.com
DOUBLECUP Uses ClickFix and Cached PNGs to Deliver CountLoader and DeviceManager RAT - thehackernews.com
Fake Adobe and Zoom Updates Install ScreenConnect for Persistent Remote Access - thehackernews.com
Smoke#Screen RMM Takeover Gambit Exposes Threat Actor Playbook - darkreading.com
Botnet Hunting for Vulnerabilities in Diagnostic Tools, (Tue, Aug 4th) - isc.sans.edu
How legitimate cloud platforms enable phishers to bypass MFA - securelist.com
Greatness PhaaS Adds Device Code Phishing to Bypass MFA and Steal Tokens - thehackernews.com
Phishing service spoofs RingCentral to steal Microsoft 365 accounts - bleepingcomputer.com
Weaponized Email AI Assistants Could Help Attackers Hijack Accounts - securityweek.com
OpenAI, Anthropic AI agents targeted real people and systems in cyber tests - bleepingcomputer.com
OK, Well, Rogue AI Agents Are Hacking Again - wired.com
Google Deletes 3 ADK AI Workflows After Malicious GitHub Issue Could Trigger Privileged Agent - thehackernews.com
Gemini Agent-to-Agent Attack Method Exposed Secrets, Enabled Pull Request Tampering - securityweek.com
Rethinking AI Security: Why CASB and DLP Need an Interaction-Aware Layer - securityweek.com
Varonis Agent IBAC keeps AI agents within their intended boundaries - bleepingcomputer.com
Obsidian Security Raises $85 Million at $1.1 Billion Valuation - securityweek.com
Agent Risk Manager Moves into Early Access - blog.knowbe4.com
Apple battles it out again with the UK over encrypted iCloud access - malwarebytes.com

Cybersecurity Brief – 2025-09-27

Sat, 27 Sep 2025 00:00:00 +0000

Major Incidents or Breaches

Volvo and two other international vehicle manufacturers suffered supply chain cyberattacks in the past month, resulting in the theft of Volvo employee Social Security Numbers in a ransomware attack.
Hackers stole data on 8,000 nursery children and contacted their parents directly, demanding ransom payments under threat of leaking the children’s information.
A South Korean credit card company was hacked, and the Maryland Transit Administration experienced a ransomware attack. The UK’s Co-op lost £206 million due to a cyberattack.
Flo Health and Google agreed to pay $56 million to settle lawsuits over the period-tracking app Flo sharing sensitive users’ health data for advertising purposes.
Neon Mobile, a popular US app, pays users to record their phone calls and then sells this data for AI training.

Newly Discovered Vulnerabilities

A critical vulnerability (CVE-2025-10035, CVSS 10) in Fortra’s GoAnywhere Managed File Transfer (MFT) software was exploited as a zero-day at least eight days prior to public disclosure, allowing unauthenticated remote command injection and the creation of backdoor admin accounts.
Multiple vulnerabilities in Cognex industrial cameras allow for remote hacking; no patches are available, and customers are advised to migrate to newer models.
Google Project Zero highlighted the risk of pointer leaks through pointer-keyed data structures, which can undermine ASLR protections and facilitate remote exploitation.

Notable Threat Actor Activity

The Russian APT group COLDRIVER launched a new campaign using ClickFix-style attacks to deliver two new lightweight malware families.
Iranian APTs, including the Charming Kitten offshoot Subtle Snail, have been observed signing malware with valid code-signing certificates issued by SSL.com.
North Korean threat actors are posing as recruiters to steal developers’ identities and provide these to fraudulent IT workers.
A phishing campaign impersonating Ukrainian government agencies is distributing CountLoader, which subsequently deploys Amatera Stealer and PureMiner malware. PureRAT phishing threats are also targeting Vietnam.
LockBit 5.0 ransomware activity continues to be reported.

Trends, Tools, or Tactics of Interest

The XCSSET macOS malware has a new variant with a four-stage infection chain, an additional persistence mechanism, and new targeting of Firefox browser data, including cryptocurrency transaction hijacking.
Microsoft Edge will introduce a feature to block malicious sideloaded browser extensions.
Generative AI deployments are increasingly recognised as introducing new cyber risks, including phishing, fraud, and model manipulation.
North Korean threat actors are leveraging social engineering by masquerading as recruiters to facilitate identity theft for use by IT worker proxies.
Interpol arrested 260 suspects in Africa involved in online romance scams that used relationship-building to extort or blackmail victims.
A new tool, convert-ts-bash-history.py, has been released to facilitate quick timeline analysis from bash histories.
Breach and Attack Simulation (BAS) is highlighted as an effective method for validating security controls beyond theoretical design.
The Neon Mobile app’s business model of incentivising users to record and sell their phone call data for AI training is drawing privacy concerns.

Regulatory or Policy Developments Affecting the Security Industry

Microsoft has restricted access to cloud and AI products for a unit within the Israeli military, following an internal review linking these services to mass surveillance activities in Gaza.
U.S. President Donald Trump signed an executive order approving the restructuring of TikTok’s U.S. operations to address national security concerns, transferring control to U.S. investors.
Google and Flo Health face regulatory enforcement, agreeing to a $56 million settlement over improper sharing of sensitive health data.
Cognex is recommending customers transition to newer products due to unpatched vulnerabilities in its industrial cameras.

Cybersecurity Brief – 2025-09-26

Fri, 26 Sep 2025 00:00:00 +0000

Major Incidents or Breaches

The Co-operative Group (UK) reported a loss of £80 million ($107 million) in operating profit due to a cyberattack attributed to the Scattered Spider threat group.
RTX (Raytheon Technologies) confirmed a ransomware attack affecting its airport services division.
Volvo Group disclosed that employee data was stolen in a ransomware attack linked to the Miljödata breach, impacting multiple Swedish organizations and municipalities.
An unofficial npm package mimicking ‘postmark-mcp’ was found to exfiltrate users’ email communications.
Over 500 npm packages were infected by the Shai-Hulud worm in a supply-chain attack, impacting packages with millions of downloads.
Two malicious Rust crates (fast_tlog and fast_log) on crates.io were found stealing Solana and Ethereum wallet keys from developers, with 8,424 downloads confirmed.

Newly Discovered Vulnerabilities

Cisco disclosed multiple zero-day vulnerabilities in its ASA firewalls and IOS devices, several of which have been actively exploited in the wild, including by nation-state actors (notably the “ArcaneDoor” campaign). Exploits have resulted in remote code execution and privilege escalation.
Salesforce patched a critical vulnerability (“ForcedLeak”) in the Agentforce AI platform that allowed prompt injection attacks, potentially exposing CRM data via AI agent manipulation and expired domain abuse.
Cisco patched a zero-day flaw affecting routers and switches, enabling remote attackers with admin privileges to execute arbitrary code as root.

Notable Threat Actor Activity

The China-linked APT group UNC5221 deployed new versions of the “Brickstorm” backdoor on edge devices, targeting appliances that cannot run traditional EDR agents. Campaigns persisted undetected for nearly 400 days, with evidence of analysis of stolen code to weaponize additional zero-day vulnerabilities.
North Korean actors behind the “Contagious Interview” campaign have been linked to a new backdoor dubbed AkdoorTea, along with tools TsunamiKit and ExistentialKit, targeting global cryptocurrency developers.
The threat actor “Vane Viper” was identified as operating a large-scale ad fraud and malware network, generating over 1 trillion DNS queries and using shell companies to obfuscate operations.
Chinese APT “RedNovember” targeted US defense contractors, government, aerospace, and legal organizations in a recent espionage campaign.
Microsoft reported a new variant of the XCSSET macOS malware targeting Xcode developers, with enhanced browser targeting and credential theft features.

Trends, Tools, or Tactics of Interest

A new AI-driven phishing platform, “SpamGPT”, was observed automating attack campaigns by leveraging generative AI and integrated email campaign tools.
Attackers are using AI-powered development platforms (Lovable, Netlify, Vercel) to rapidly create and host convincing fake CAPTCHA pages for phishing.
A fresh phishing campaign is targeting PyPI users by impersonating administrators and directing victims to credential-harvesting sites.
SVG-based phishing campaigns continue, with recent attacks using malicious SVG files disguised as recipes to deliver malware.
Webshells are increasingly being hidden in “.well-known” directories to evade detection.
Gcore Radar reported that the technology sector has overtaken gaming as the top target for DDoS attacks, with a 41% year-on-year increase and attack peaks reaching 2.2 Tbps.
Cloud Security Alliance introduced a SaaS Security Controls Framework to help customers manage shared responsibility in SaaS environments.

Regulatory or Policy Developments Affecting the Security Industry

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) issued an emergency directive mandating federal agencies to identify, mitigate, and patch Cisco zero-day vulnerabilities exploited in active attacks.
Microsoft announced it will offer free extended security updates for Windows 10 users in the European Economic Area (EEA), including all EU member states, Iceland, Liechtenstein, and Norway.
LinkedIn will use user data for AI training by default unless users opt out.
Canadian privacy commissioners accused TikTok of improperly collecting data from hundreds of thousands of children on its platform.