Welcome to the DanSec Blog

Cybersecurity Brief – 2026-03-07

Major Incidents or Breaches

  • TriZetto Provider Solutions, part of Cognizant, suffered a data breach exposing sensitive health information of 3.4 million patients.
  • The FBI is investigating a breach affecting systems used to manage surveillance and wiretap warrants, with the scope and impact under assessment.
  • Transport for London experienced a data breach impacting 10 million users.
  • Iranian APT actors have compromised networks of US organizations, including an airport, a bank, and a software company, with activity observed since February.
  • Cyberattackers reportedly gained access to Mexican government agencies and citizens’ data using AI tools and detailed playbook prompts.
  • A Ghanaian national pleaded guilty to participating in a $100 million fraud ring leveraging business email compromise and romance scams.

Newly Discovered Vulnerabilities

[Full post ↘]

Cybersecurity Brief – 2026-03-06

Major Incidents or Breaches

  • Wikipedia experienced a security incident involving a self-propagating JavaScript worm that vandalized pages and modified user scripts across multiple Wikimedia wikis.
  • The FBI arrested a suspect linked to the theft of over $46 million in cryptocurrency from the U.S. Marshals Service. The individual is the son of a U.S. government contractor.
  • LeakBase, a stolen credential marketplace active since 2021 with 142,000 users, was shut down by law enforcement and suspects were arrested.
  • Spanish and Ukrainian law enforcement dismantled an online gambling ring that exploited war-displaced Ukrainian women, laundering nearly €4.75 million.
  • Phobos ransomware administrator Evgenii Ptitsyn, a Russian national, pleaded guilty to wire fraud conspiracy in the US after extradition from South Korea.

Newly Discovered Vulnerabilities

[Full post ↘]

Cybersecurity Brief – 2026-03-05

Major Incidents or Breaches

  • LexisNexis has confirmed a data breach after hackers leaked files containing approximately 400,000 personal information records. Attackers claim to have stolen 2GB of data.
  • The University of Mississippi Medical Center (UMMC) resumed operations after a ransomware attack that disrupted access to electronic medical records and IT systems for nine days.
  • LeakBase, one of the largest online cybercrime forums for trading stolen data and cybercrime tools, was seized by the FBI and Europol. Data of 142,000 members was reportedly obtained.
  • Customers of restaurants using the HungerRush POS platform received mass extortion emails from a threat actor threatening to leak restaurant and customer data.
  • A significant increase in hacktivist DDoS attacks was recorded, with 149 attacks affecting 110 organisations in 16 countries, following coordinated military action in the Middle East.

Newly Discovered Vulnerabilities

[Full post ↘]

Cybersecurity Brief – 2026-03-04

Major Incidents or Breaches

  • AkzoNobel, a multinational paint company, confirmed a cyberattack that breached the network of one of its U.S. sites.
  • LexisNexis Legal & Professional confirmed a data breach involving unauthorized access to customer and business information, with stolen files leaked by attackers.
  • Cloud Imperium Games (developer of Star Citizen) disclosed a breach in January affecting systems containing user personal data.
  • The University of Hawaii Cancer Center reported a ransomware attack in August 2025 that compromised personal and health data of nearly 1.2 million individuals.
  • Amazon confirmed that drone strikes damaged three AWS data centers in the United Arab Emirates and one in Bahrain, resulting in significant outages.
  • Facebook experienced a worldwide outage, rendering accounts inaccessible for a period.
  • Interpol, with support from private threat hunters, dismantled an African cybercrime syndicate, resulting in 574 arrests and the recovery of over $3 million.

Newly Discovered Vulnerabilities

[Full post ↘]

Cybersecurity Brief – 2026-03-03

Major Incidents or Breaches

  • Madison Square Garden confirmed a data breach resulting from the 2025 Oracle E-Business Suite hacking campaign, with the incident only publicly disclosed months after the initial attack.
  • Wynn Resorts, a major US-based casino and hotel operator, was listed among the top attack and breach victims in the recent Check Point threat intelligence report.
  • A 22-year-old Alabama man pleaded guilty to hacking and extorting hundreds of women by hijacking their social media accounts, including those of minors.
  • A Florida woman was sentenced to 22 months in prison for orchestrating a large-scale Microsoft license fraud operation, trafficking thousands of stolen Certificate of Authenticity (COA) labels.
  • A phishing campaign is leveraging a fake Google Account security page and a Progressive Web App (PWA) to steal credentials, multi-factor authentication codes, and cryptocurrency wallet addresses, as well as proxying attacker traffic.
  • A fake FileZilla website is distributing a tampered installer that communicates with attacker-controlled servers via encrypted DNS traffic, evading traditional network monitoring.
  • A phishing campaign is distributing malicious “purchase order” attachments that link to credential-harvesting web pages.

Newly Discovered Vulnerabilities

[Full post ↘]

Cybersecurity Brief – 2026-03-02

Major Incidents or Breaches

  • Hackers conducted a cyberattack against the Mexican government, leveraging AI-generated code to write exploits, create custom tools, and automate the exfiltration of over 150GB of sensitive data.

Newly Discovered Vulnerabilities

  • Researchers disclosed a high-severity vulnerability, “ClawJacked,” in the OpenClaw AI agent. The flaw allowed malicious websites to bruteforce access to data on a user’s local machine by hijacking locally running OpenClaw instances.

Notable Threat Actor Activity

[Full post ↘]

Cybersecurity Brief – 2026-03-01

Major Incidents or Breaches

  • Canadian Tire suffered a data breach impacting 38 million accounts. Exposed data includes names, addresses, email addresses, phone numbers, and encrypted passwords.
  • South Korea’s National Tax Service inadvertently exposed the mnemonic recovery phrase of a seized cryptocurrency wallet in a press release, resulting in the theft of 6.4 billion won ($4.8M) in cryptocurrency.
  • The “QuickLens - Search Screen with Google Lens” Chrome extension was compromised and removed from the Chrome Web Store after being used to distribute malware and steal cryptocurrency from thousands of users.
  • Thousands of public Google Cloud API keys were found exposed, with researchers demonstrating these could be abused to authenticate to Gemini endpoints and access private data.

Newly Discovered Vulnerabilities

[Full post ↘]

Cybersecurity Brief – 2026-02-28

Major Incidents or Breaches

  • Over 900 Sangoma FreePBX instances remain compromised with web shells following exploitation of a command injection vulnerability in the endpoint manager’s interface, ongoing since December 2025.
  • ManoMano, an online marketplace, suffered a data breach allegedly impacting 38 million individuals, with stolen data including names, email addresses, phone numbers, and other personal information.
  • The U.S. Department of Justice seized $61 million in Tether cryptocurrency linked to “pig butchering” crypto scams.
  • Data broker breaches have contributed to nearly $21 billion in identity-theft losses, according to a new report.
  • A Ukrainian national pleaded guilty to operating OnlyFake, an AI-powered fake ID website that generated and sold over 10,000 fraudulent identification documents globally.

Newly Discovered Vulnerabilities

[Full post ↘]

Cybersecurity Brief – 2026-02-27

Major Incidents or Breaches

  • ManoMano, a major European DIY retail chain, has suffered a data breach impacting 38 million customers. The breach was caused by the compromise of a third-party service provider.
  • French football club Olympique de Marseille confirmed an attempted cyberattack following a data leak, with a threat actor claiming responsibility for breaching the club’s systems.
  • Conduent, a US-based business process services company, has revised the impact of its third-party breach to 25 million affected Americans.
  • A new malicious NuGet package, “StripeApi,” was discovered impersonating a legitimate Stripe library to steal API tokens, targeting the financial sector.
  • Google API keys previously considered harmless can now be abused to access private Gemini AI data if exposed in client-side code.
  • Anthropic patched vulnerabilities in its Claude AI code interpreter that could have allowed silent compromise of developer devices through malicious configuration files.

Newly Discovered Vulnerabilities

[Full post ↘]

Cybersecurity Brief – 2026-02-26

Major Incidents or Breaches

  • Google, Mandiant, and partners disrupted a global espionage campaign by suspected China-nexus threat actor UNC2814, which breached at least 53 organizations across 42 countries, including telecom firms and government agencies. The campaign leveraged SaaS API calls to conceal malicious traffic.
  • UFP Technologies, a US-based medical device manufacturer, disclosed a cyberattack involving data theft and file-encrypting ransomware.
  • CarGurus suffered a data breach impacting over 12 million users, with hackers claiming theft of personally identifiable information and internal corporate data.
  • Wynn Resorts confirmed a data breach in which the ShinyHunters group exfiltrated employee data.
  • Marquis Software Solutions filed a lawsuit against SonicWall, alleging gross negligence and misrepresentation after a backup breach led to a ransomware attack.

Newly Discovered Vulnerabilities

[Full post ↘]