Cybersecurity Brief – 2025-09-19

Fri, 19 Sep 2025 00:00:00 +0000

Major Incidents or Breaches

SonicWall suffered a breach of its MySonicWall cloud backup service, exposing firewall configuration backup files for fewer than 5% of customers. Impacted customers have been instructed to reset their passwords and import new configuration files.
Tiffany & Co. disclosed a data breach affecting thousands of customers in the US and Canada, with attackers accessing information related to gift cards.
Medical Associates of Brevard reported a data breach impacting nearly 250,000 individuals, attributed to the BianLian ransomware group.
ChatGPT was targeted in a server-side data theft attack using a zero-click method called ShadowLeak, which has since been fixed by OpenAI.
The Python Package Index (PyPI) invalidated all tokens stolen in the GhostAction supply chain attack and confirmed that threat actors did not use the stolen tokens to publish malicious packages.

Newly Discovered Vulnerabilities

WatchGuard released security updates for a critical remote code execution vulnerability in Firebox firewalls.
Google issued a Chrome 140 update patching four vulnerabilities, including a zero-day (CVE-2025-10585) in the V8 JavaScript engine, which was actively exploited.
Microsoft addressed a pair of vulnerabilities in Entra ID (formerly Azure AD) that could have allowed attackers to access virtually all Azure customer accounts.
CISA published details of two malware strains exploiting Ivanti EPMM vulnerabilities (CVE-2025-4427 and CVE-2025-4428) in a recent incident.

Notable Threat Actor Activity

Two UK teenagers linked to the Scattered Spider group were arrested in connection with the August 2024 cyberattack on Transport for London.
North Korean threat actors behind the “Contagious Interview” campaign are using a ClickFix social engineering technique to target job seekers with fraudulent employment offers.
Russian ransomware gangs are deploying a new multi-version malware loader, CountLoader, to deliver post-exploitation tools such as Cobalt Strike and Adaptee.
RevengeHotels has been targeting hotels in Brazil and Spanish-speaking regions with VenomRAT implants.
The SystemBC proxy botnet is actively compromising commercial VPS systems, maintaining around 1,500 bots daily to facilitate malicious traffic.
Two malicious PyPI packages were discovered delivering the SilentSync remote access trojan (RAT) to Windows systems.
Microsoft and Cloudflare disrupted RaccoonO365, a major Phishing-as-a-Service operation targeting Microsoft 365 credentials.
SMS blaster tools are being used to send large volumes of scam texts by impersonating cell towers, bypassing carrier-level protections.

Trends, Tools, or Tactics of Interest

AI-assisted phishing attacks are increasing in volume and sophistication, posing a growing threat to organizations.
Small businesses continue to be disproportionately targeted by ransomware attacks compared to large enterprises.
Microsoft 365’s widespread adoption and integration are expanding its attack surface, making it a prime target for cybercriminals.
HTTP request smuggling remains a practical attack vector, with pentesters continuing to find exploitable desynchronization vulnerabilities in web applications.
The use of Phishing-as-a-Service platforms is accelerating, with recent disruptions highlighting their prevalence and focus on Microsoft 365 accounts.
Age verification and enhanced parental controls are being introduced to ChatGPT to address concerns about AI-related harms to minors.

Regulatory or Policy Developments Affecting the Security Industry

UK law enforcement made arrests in connection with the Scattered Spider group’s attack on Transport for London, reflecting ongoing efforts to disrupt cybercriminal groups.
OpenAI is implementing age verification and parental controls for ChatGPT in response to increasing scrutiny over AI safety for minors.

Cybersecurity Brief – 2025-09-18

Thu, 18 Sep 2025 00:00:00 +0000

Major Incidents or Breaches

ShinyHunters claims to have stolen over 1.5 billion Salesforce records from 760 companies via compromised Salesloft Drift OAuth tokens.
Insight Partners, a venture capital and private equity firm, has confirmed a ransomware breach impacting over 12,000 individuals, with personal information stolen.
SonicWall has warned customers to reset credentials following a breach that exposed firewall configuration backup files related to MySonicWall accounts.
A supply chain attack dubbed “Shai-Hulud” compromised over 180 NPM packages, injecting malicious code to harvest secrets, exfiltrate them to public repositories, and make private repositories public.
224 malicious apps were removed from the Google Play Store after researchers uncovered a large-scale ad fraud campaign.
Airline data broker is selling at least five billion passenger records to US government agencies through a searchable database.

Newly Discovered Vulnerabilities

Google released emergency updates for Chrome to patch four vulnerabilities, including CVE-2025-10585, a zero-day in the V8 JavaScript engine exploited in the wild. This is the sixth Chrome zero-day exploited this year.
NetRise identified that 20 device models from six vendors remain vulnerable to the decade-old Pixie Dust Wi-Fi attack, which allows attackers to recover WPS PINs and gain unauthorized network access.

Notable Threat Actor Activity

TA558 is conducting attacks targeting hotels in Brazil and Spanish-speaking markets, deploying Venom RAT and other remote access trojans using AI-generated scripts.
Chinese state-aligned TA415 has been linked to spear-phishing campaigns targeting US government, think tanks, and academic organizations focused on US-China economic and policy matters, leveraging VS Code Remote Tunnels for persistence and espionage.
Scattered Spider has resurfaced with new cyber attacks targeting the financial sector, contradicting previous claims of ceasing operations.
RaccoonO365, a large-scale phishing-as-a-service operation, was disrupted by Microsoft and Cloudflare. The service had enabled cybercriminals to steal thousands of Microsoft 365 credentials.
ClickFix threat actor has evolved tactics to distribute MetaStealer, using fake CAPTCHAs, File Explorer deception, and MSI lures.
Raven Stealer, a lightweight infostealer distributed via underground forums and cracked software, now targets Chromium-based browser data and exfiltrates it via Telegram.

Trends, Tools, or Tactics of Interest

AI-generated scripts are increasingly being used by threat actors (e.g., TA558) to automate and enhance malware deployment.
There is a rise in AI-powered sign-up fraud, with attackers exploiting enterprise sign-up funnels using advanced automation.
The use of phishing-as-a-service (PhaaS) kits, exemplified by RaccoonO365, continues to lower the barrier for cybercriminals to launch credential theft campaigns.
Supply chain attacks targeting open-source repositories (e.g., NPM) are ongoing, with attackers injecting worms to steal secrets and compromise private codebases.
Commodity infostealers are evolving in stealth and distribution, with examples like Raven Stealer using encrypted messaging platforms for exfiltration.
Security researchers are observing increased use of fake CAPTCHAs and system interface tricks in malware delivery.

Regulatory or Policy Developments Affecting the Security Industry

Microsoft reminded customers that Office 2016 and Office 2019 will reach end of extended support on 14 October 2025, impacting security patch availability.
Multiple security startups (Irregular, RegScale, Scalekit) have raised significant funding for AI security testing, GRC platforms, and AI agent authentication, reflecting increased industry focus on AI and regulatory compliance.

CVE-2025-10585 on DanSec Daily

Cybersecurity Brief – 2025-09-19

Major Incidents or Breaches

Newly Discovered Vulnerabilities

Notable Threat Actor Activity

Trends, Tools, or Tactics of Interest

Regulatory or Policy Developments Affecting the Security Industry

Cybersecurity Brief – 2025-09-18

Major Incidents or Breaches

Newly Discovered Vulnerabilities

Notable Threat Actor Activity

Trends, Tools, or Tactics of Interest

Regulatory or Policy Developments Affecting the Security Industry