Brinztech Alert: Alleged Database of Le Guide Noir (Influencer Marketing) is on Sale

Dark Web News Analysis

A threat actor on a known hacker forum is offering a database purportedly exfiltrated from Le Guide Noir, a prominent European influencer marketing and social performance platform. The dataset, dated 2025, allegedly contains over 120,000 rows of user and professional data.

Brinztech Analysis:

• The Target: Le Guide Noir provides tools for brands and agencies to track influencer campaigns. A breach here exposes the B2B side of the creator economy—marketing managers, agency professionals, and high-tier influencers.
• The Data: The leak is described as a comprehensive “leads” list, including:
  • Contact PII: 103,000+ Unique Email Addresses and 32,000+ Unique Phone Numbers.
  • Professional Identity: Job Titles, Organizations, and LinkedIn Profiles.
  • Physical Data: Postal Addresses (potentially exposing agency offices or influencer home studios).
• The Price ($200): The low asking price ($200) suggests the threat actor views this as a “bulk marketing” or “spam” list rather than a high-value financial breach. However, for targeted phishing, its value is significantly higher than the price implies.

Key Cybersecurity Insights

This alleged data breach presents a specific threat to the marketing and influencer ecosystem:

• Brand Impersonation & Collab Scams: This is the primary risk. Attackers can use the Job Titles and Emails to impersonate legitimate brands.
  • Scenario: An influencer receives an email from a “Marketing Director” (whose real name was found in the leak) offering a sponsorship deal. The email looks authentic because it cites real campaign details. The influencer is then tricked into downloading a “contract” that is actually malware (Infostealer).
• B2B Spear Phishing: Marketing agencies often handle large budgets. Attackers can target the “Finance Directors” or “Account Managers” identified in the leak with Business Email Compromise (BEC) attacks, redirecting campaign payments to fraudulent bank accounts.
• Credential Stuffing: Marketing professionals often manage dozens of social media accounts. If they reuse passwords, this leak could lead to the hijacking of high-value Instagram or TikTok accounts managed by the affected agencies.
• Stale vs. Fresh Data: While the leak is stamped “2025,” the low price warrants verification. It could be a repackaged older scrape enriched with new headers. However, even “stale” phone numbers in the marketing industry remain valid for years.

Mitigation Strategies

In response to this claim, agencies and users of Le Guide Noir must take defensive measures:

• Verify “Collab” Requests: Influencers and agencies should verify any unsolicited contract offer. Contact the brand directly through a known channel, not by replying to the email.
• Credential Monitoring: Agencies should monitor if their corporate domains appear in this leak. Use tools like Have I Been Pwned or enterprise dark web monitoring.
• MFA Enforcement: Enforce Multi-Factor Authentication (MFA) on all social media and marketing tool accounts.
• Phishing Simulation: Conduct training for marketing staff on how to spot “fake collaboration” emails, which often contain malicious attachments (.scr, .exe, or double-extension files).

Secure Your Business with Brinztech — Global Cybersecurity Solutions Brinztech protects organizations worldwide from evolving cyber threats. Whether you’re a startup or a global enterprise, our expert solutions keep your digital assets safe and your operations running smoothly.

Questions or Feedback? For expert advice, use our ‘Ask an Analyst’ feature. Brinztech does not warrant the validity of external claims. For general inquiries or to report this post, please email us: contact@brinztech.com