PLUS: AI Guardrails Cracked ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ 

May 28, 2026

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May 28, 2026

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Security gaps are getting harder to spot.

Today’s stories include a 7-Eleven breach, a botnet takedown, weakened AI safeguards, and growing concerns around how organizations handle sensitive data long after devices leave production. 

Tell us what content you want to see on TechRepublic by taking this quick survey. 

Read past newsletters here.

Here’s what you need to know:

  • 7-Eleven breach exposes applicant data
  • CrowdStrike disrupts Glassworm malware
  • AI guardrails bypassed in minutes
  • AI threats reshape pentesting strategies
  • Weak data sanitization raises risks
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7-Eleven Breach Exposes Applicant Data 

7-Eleven is notifying franchise applicants after attackers breached internal systems containing sensitive application data.  

The breach has been linked to the ShinyHunters extortion group, which reportedly stole more than 600,000 records from a connected Salesforce environment and later leaked the data online.

7-Eleven Breach Exposes Applicant Data

Source: ChatGPT

Researchers say the incident highlights growing risks tied to cloud platforms and third-party business applications, with some exposed records reportedly containing social security numbers. 

Organizations using Salesforce or similar cloud platforms should immediately review third-party app permissions, enforce phishing-resistant MFA, and audit dormant user accounts for unnecessary access.

CrowdStrike Disrupts Glassworm Supply Chain Attacks 

CrowdStrike, Google, and the Shadowserver Foundation disrupted the Glassworm botnet targeting developers through poisoned GitHub repositories and malicious software packages. 

More than 300 GitHub repositories were reportedly compromised, while Glassworm used decentralized infrastructure to maintain resilient C2 operations.

The campaign highlights how attackers are targeting developer ecosystems to gain access to CI/CD pipelines and trusted software distribution channels. 

Audit developer accounts for unauthorized OAuth tokens, enforce signed commits and MFA, and continuously monitor dependency installations for unexpected post-install scripts or outbound network activity.

AI Guardrails Bypassed in Minutes 

Researchers showed how easily open-source AI models from Google and Meta could be stripped of safety protections to generate harmful content, including malware code and biological weapon instructions. 

The study used a GitHub-based tool called Heretic to remove built-in guardrails from more than 3,500 AI models, raising concerns about the security risks of open-source AI adoption. 

These findings are also increasing pressure on U.S. and European regulators to strengthen oversight around AI safety, misuse, and harmful outputs. 

Organizations testing open-source AI models should isolate them in sandboxed environments, restrict internet access, and log prompt/output activity to identify unsafe behavior before production deployment.

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Threat Tracker

AI-Driven Threats Reshape Pentesting 

Organizations are moving beyond conducting just annual penetration tests as cloud, AI, and rapidly changing development environments outpace traditional assessment cycles. 

Researchers say the shrinking gap between vulnerability disclosure and exploitation, due to AI, is making periodic penetration testing far less effective.

AI-Driven Threats Reshape Pentesting

Source: ChatGPT

The shift is driving adoption of continuous security validation and AI-powered offensive security tools that prioritize real-world exploitability and faster threat detection. 

Organizations should start integrating continuous exposure validation directly into CI/CD workflows and routinely test whether previously remediated vulnerabilities silently reappear through configuration drift or deployment changes.

Poor Data Sanitization Raises Security Risks 

A Blancco report found that rising AI adoption and weak data sanitization practices are increasing risks tied to data leaks and compliance issues. 

Despite strong confidence in data sanitization practices, 38% of organizations still reported data leaks tied to improperly erased or redeployed devices. 

Researchers also found that AI adoption, growing compliance pressure, and rising data volumes are driving more aggressive device destruction and complicating end-of-life data management. 

Organizations should require verifiable sanitization certificates for all retired storage assets and routinely test erased devices with forensic recovery tools to validate that sensitive data cannot be recovered.

 

 

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Security Tip of the Day

How Exposed Is Your Sensitive Data?  

Data theft can expose sensitive information, disrupt operations, and create long-term financial and security risks. 

How Exposed Is Your Sensitive Data?

Source: ChatGPT

How to reduce the risk of data theft:

  • Enable MFA, encrypt sensitive files, and restrict user access to reduce the impact of stolen credentials and limit the blast radius of compromised systems.
  • Use data loss prevention (DLP) tools and monitor unusual outbound traffic to detect and block potential data exfiltration attempts.
  • Regularly audit cloud storage, sharing permissions, and inactive accounts to identify exposed data and unnecessary access risks.

Small improvements in data protection practices can help reduce the risk of costly data exposure incidents. 

Meet Our Writer:

Ken Underhill

Ken Underhill

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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