Cybersecurity Brief – 2025-11-27

Thu, 27 Nov 2025 00:00:00 +0000

Major Incidents or Breaches

Gainsight has expanded its list of impacted customers following a recent security alert from Salesforce, indicating the breach affected more customers than initially disclosed.
Multiple London councils, including the Royal Borough of Kensington and Chelsea and Westminster City Council, have experienced IT service disruptions due to a cyberattack.
Comcast will pay a $1.5 million fine after a vendor data breach in February 2024 exposed the personal information of nearly 275,000 customers.
Dartmouth College confirmed a data breach resulting from an Oracle hack, with over 226 GB of files stolen and leaked.
The OnSolve CodeRED emergency alert platform in the US was disrupted by a ransomware attack from the Inc Ransom group, resulting in operational impact and data breach.
Thousands of secrets, including credentials and private keys, were leaked by users of JSONFormatter and CodeBeautify code formatting platforms.
A major sportswear company was targeted by a high-volume phishing campaign between 29 and 30 October 2025, as detected by KnowBe4 analysts.

Newly Discovered Vulnerabilities

ASUS released firmware updates to address nine security vulnerabilities in AiCloud routers, including a critical authentication bypass flaw.
The ’node-forge’ JavaScript cryptography library patched a vulnerability that allowed attackers to bypass signature verification with specially crafted data.
A new malicious Chrome extension was discovered that injects hidden Solana transfer fees into Raydium swaps, diverting funds to attacker-controlled wallets.
Microsoft warned that FIDO2 security keys may prompt users for a PIN after recent Windows updates since September 2025.
Microsoft announced plans to secure Entra ID sign-ins from external script injection attacks, with implementation set for mid-to-late October 2026.

Notable Threat Actor Activity

The Shai-Hulud v2 supply chain attack has spread from npm to Maven, compromising over 830 npm packages and exposing thousands of secrets.
Qilin ransomware was deployed in a sophisticated supply chain attack targeting a South Korean managed service provider, resulting in data theft from 28 financial sector victims.
The RomCom threat group used SocGholish fake update attacks to deliver Mythic Agent malware to a US-based civil engineering company.
A new Mirai-based botnet, ShadowV2, has been observed exploiting known vulnerabilities in IoT devices from D-Link, TP-Link, and others, using the recent AWS outage as a test event.
Scammers are using fake LinkedIn job postings and video updates to distribute Flexible Ferret malware to Mac users, enabling multi-stage data theft and long-term access.
The “Scattered LAPSUS$ Hunters” group continued data theft and mass extortion campaigns against major corporations.
Cybercriminals have increasingly targeted financial institutions and individuals with account takeover fraud, causing $262 million in losses in 2025, according to the FBI.

Trends, Tools, or Tactics of Interest

NTLM relay and credential forwarding attacks continue to be exploited, with new vulnerabilities and abuse techniques identified in 2025.
The EMEA finance and banking sector faces escalating cybersecurity challenges, with increased targeting and advanced threats.
Advanced digital fraud attacks surged 180% in 2025, with generative AI used for creating deepfakes, synthetic IDs, and autonomous bots.
Attackers are integrating large language models (LLMs) into malware to evade detection and augment code in real time.
“Dark LLMs” are facilitating more competent attacks by low-level cybercriminals, though with limited technical sophistication.
Prompt injection vulnerabilities are a growing concern for agentic AI-enabled browsers, such as ChatGPT’s Atlas Browser.
Over half of surveyed enterprises are uncertain about their ability to secure non-human identities (NHIs), highlighting a gap in identity security controls.
Increased use of community-maintained tools (e.g., Chocolatey, Winget) for patching and updates presents both opportunities and risks for IT teams.

Regulatory or Policy Developments Affecting the Security Industry

The UK government has introduced a new Cyber Security and Resilience Bill, setting out enhanced requirements for critical infrastructure organisations.

Cybersecurity Brief – 2025-09-24

Wed, 24 Sep 2025 00:00:00 +0000

Major Incidents or Breaches

Boyd Gaming Corporation disclosed a data breach following a cyberattack, resulting in the theft of employee and customer data.
Jaguar Land Rover extended its production shutdown due to a cyberattack, with operations paused until at least October 1 as investigations continue.
The American Archive of Public Broadcasting exposed restricted and copyrighted media for years due to inadequate access controls, allowing unauthorised downloads.
CISA reported that attackers breached a US federal agency’s network by exploiting an unpatched GeoServer instance.
The US Secret Service dismantled a major telecom threat in New York, seizing over 300 servers and 100,000 SIM cards used to threaten US officials and potentially disrupt critical infrastructure near the UN.
Eurojust coordinated the arrest of five suspects in a cryptocurrency investment fraud scheme, responsible for over €100 million in losses across 23 countries.
Fake versions of Malwarebytes, LastPass, and other software are being distributed via GitHub pages in a campaign targeting Mac users.
Scammers are impersonating the FBI using fake IC3 websites to steal personal data.

Newly Discovered Vulnerabilities

Pandoc (CVE-2025-51591): Actively exploited security flaw in Linux utility Pandoc allowed attackers to target AWS Instance Metadata Service (IMDS) and steal EC2 IAM credentials.
Libraesva Email Security Gateway (CVE-2025-59689): Command injection vulnerability exploited by state-sponsored actors, triggered via malicious emails with crafted compressed attachments. Emergency fix released.
Supermicro BMC Firmware: Two new vulnerabilities allow attackers to bypass root of trust security, enabling malicious firmware installation. Previous patches have been bypassed.
SolarWinds Web Help Desk (CVE-2025-26399): Critical unauthenticated remote code execution vulnerability. Multiple patch attempts have been made due to previous bypasses.
Microsoft Entra: Research revealed all tenants were exposed to silent compromise via invisible actor tokens.
NPM package ‘fezbox’: Newly discovered package uses QR codes to deliver second-stage, cookie-stealing malware.
SonicWall SMA 100: Firmware update released to remove rootkit malware deployed in recent attacks.

Notable Threat Actor Activity

State-sponsored actors exploited the Libraesva Email Security Gateway vulnerability in the wild.
ShadowV2 botnet operators are exploiting misconfigured AWS Docker containers to build a DDoS-for-hire platform, enabling customers to self-manage attacks.
Chinese-speaking threat actors are conducting SEO poisoning campaigns using BadIIS malware, redirecting traffic and planting web shells on compromised servers.
Scattered Spider: A juvenile suspect associated with this group was arrested in the US on charges of computer intrusion, extortion, and identity theft.
Attackers abused Google’s AppSheet platform to send phishing emails.
Large-scale campaign distributing fake software (Malwarebytes, LastPass, etc.) via GitHub targets Mac users.

Trends, Tools, or Tactics of Interest

DDoS Attacks: Cloudflare mitigated a record-breaking DDoS attack peaking at 22.2 Tbps and 10.6 billion packets per second. ShadowV2 and other botnets are leveraging exposed cloud-native tools (Docker containers) to evade detection and facilitate for-hire DDoS services.
Supply Chain Attacks: Surge in attacks targeting the npm ecosystem, including malicious packages and weak authentication mechanisms.
Ransomware: Despite rising incident counts in 2025, ransomware payments dropped 35% in 2024, indicating changes in RaaS economics.
Phishing: Abuse of legitimate platforms (Google AppSheet) for phishing campaigns continues.
SEO Poisoning: Increased use of SEO poisoning by threat actors to distribute malware and gain financial benefits.
Identity Governance: New free tools are emerging to streamline identity governance, onboarding, and access reviews for small organisations.
AI Security: New research highlights the top 25 vulnerabilities in Model Context Protocols, with risks including prompt injection and command injection targeting AI agents.

Regulatory or Policy Developments

GitHub announced mandatory two-factor authentication and short-lived access tokens for npm publishing, aiming to strengthen supply chain security following recent attacks.
European law enforcement, coordinated by Eurojust, continues cross-border efforts against large-scale cryptocurrency fraud.
CISA announced Steve Casapulla as Executive Assistant Director for Infrastructure Security.
Reports highlight ongoing concerns about the Japanese government’s cybersecurity posture, with incident counts nearly doubling and a significant proportion of critical systems unmanaged.
New revelations show the US Department of Homeland Security collected DNA from nearly 2,000 US citizens, raising oversight and legality concerns.

ShadowV2 on DanSec Daily

Cybersecurity Brief – 2025-11-27

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 – 2025-09-24

Major Incidents or Breaches

Newly Discovered Vulnerabilities

Notable Threat Actor Activity

Trends, Tools, or Tactics of Interest

Regulatory or Policy Developments