Routine tools. Trusted systems. Familiar workflows. |
Today’s threats hide in plain sight — documents, dashboards, backend systems, and third-party platforms — turning everyday access into real risk. Read past newsletters here. |
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Here’s what you need to know: |
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Adobe Reader Zero-Day Exploited in Ongoing Attacks |
A zero-day in Adobe Acrobat Reader is being exploited via malicious PDFs to steal data and compromise systems. The flaw triggers on opening a malicious PDF, enabling phishing-based attacks that use legitimate APIs to steal data and adapt execution for stealth and higher success rates. |
Adobe has not released a patch at the time of publication.
Block untrusted PDFs, disable Reader JavaScript, and enforce sandboxing with outbound traffic monitoring to reduce exploitation risk. |
$3.6M Stolen After Bitcoin Depot System Breach |
Threat actors siphoned over $3.6 million in Bitcoin after breaching internal systems at crypto ATM operator Bitcoin Depot.
The attackers used stolen settlement account credentials to move funds, highlighting how quickly losses can occur when backend systems tied to assets are compromised. With over 25,000 ATMs worldwide, the platform’s scale increases both exposure and attractiveness to attackers.
Enforce MFA and least privilege, secure keys in cold storage, and require multi-signature approvals with continuous transaction monitoring. |
300K+ Travelers Exposed in Eurail Data Breach |
A data breach at Eurail exposed sensitive personal information from more than 300,000 travelers after attackers accessed and exfiltrated customer records. The stolen data includes passport details, national IDs, IBANs, and health information, and raises the risk from identity theft and targeted phishing With some data already leaked on Telegram and offered for sale on dark web forums, affected individuals and organizations face ongoing risk.
Minimize sensitive data storage, enforce MFA and encryption, and combine continuous monitoring with proactive user actions like password updates and fraud alerts. |
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Malicious Document Check: How strong are your defenses? |
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Yesterday's Pulse Check Results |
QR Code Trust Check: Scan or Skip? |
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Security Tools You Can Use |
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GrafanaGhost AI Flaw in Grafana Opens Door to Data Theft |
Researchers have uncovered GrafanaGhost, a novel exploit chain that enables silent data exfiltration by abusing Grafana’s AI-assisted features. This attack chains prompt injection, input manipulation, and validation bypass to silently exfiltrate data, highlighting emerging AI-driven risks and blind spots in traditional security.
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The researchers stated the attack is not being seen in the wild at the time of publication. Sanitize AI inputs, enforce least privilege, and restrict outbound traffic with monitoring to block prompt injection–driven data exfiltration. |
337K+ Files Exposed in LAPD-Linked Breach |
Attackers exposed 7.7TB of sensitive LAPD-related records after breaching a third-party discovery platform used by the Los Angeles City Attorney’s Office.
The 337,000+ files exposed — including internal investigations and personal data — highlight how third-party systems can become critical weak points, driving legal, operational, and response challenges. The investigation into the incident is ongoing at the time of publication.
Enforce TPRM with strong access controls, encryption, and continuous monitoring to secure sensitive data across vendor environments. | |
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You're recording every privileged session. But is anyone actually watching?
Security teams dedicate countless hours reviewing session recordings every week — and still can't keep up. Teleport summarizes every interactive SSH, Kubernetes, and database session, classifies it by risk level, and shows a timeline of activity. No manual scrubbing through hours of playback required. Security teams review what matters — platform teams see where to automate. |
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How Resilient Is Your Data Protection Strategy? |
Data breaches continue to grow in frequency and scope, exposing credentials and sensitive personal, business and financial information. As attackers focus more on centralized systems and third-party platforms for access, organizations should take steps to strengthen their data protection. |
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Minimize stored sensitive data and enforce least privilege with privileged access management (PAM) to reduce overall exposure and support cyber resilience.
- Use multi-factor authentication and encryption both in transit and at rest to protect credentials and data from unauthorized access.
- Implement data loss prevention (DLP) solutions alongside continuous monitoring to detect exfiltration early.
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Effective data protection focuses on reducing exposure, improving detection, and limiting impact when incidents occur. |
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Ken Underhill is an award-winning cybersecurity professional, bestselling author, and seasoned IT professional. He holds a graduate degree in cybersecurity and information assurance from Western Governors University, bringing years of hands-on experience to the field. |
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Cybersecurity Insider is a TechnologyAdvice business |
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