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HR techpayrollsensitive data

HR Tech & payroll: sensitive data, simple flaws

Published on 2026-02-255 min readCleanIssue

> TL;DR: HR software handles salaries, IBANs and ID documents. Here are the most frequent vulnerabilities.

HR is a priority target

Payroll and HR software contains the most sensitive enterprise data: salaries, IBANs, social security numbers, ID documents.

For more — see our HR & payroll vendor security.

What we find

  • Unprotected APIs returning complete employee lists with salaries
  • Documents in public buckets (payslips, contracts, IDs)
  • Cross-user access (manager sees all employees, not just their team)
  • Unrestricted CSV export = mass exfiltration in one click
  • For HR & Payroll vendors

    CleanIssue specializes in security reviews for HR, payroll, and recruiting software. If you're building an HRIS, payroll tool, or ATS and want an external review of your exposure before a client audit or security questionnaire, see our offer for HR & Payroll vendors.

    Key Takeaways

  • Identify and test your exposed attack surfaces before a third party does.
  • Client-side security controls never replace server-side validation.
  • Regular audits are more effective than one-time checks — vulnerabilities appear with every deployment.
  • Building HR, payroll, or recruiting software? CleanIssue performs security audits for HR SaaS in real-world conditions, no source code access needed. For a first read of your exposure, start with an external review of your application.

    Sources

    Written by CleanIssue
    Reviewed on 2026-02-25

    Editorial analysis based on official vendor, project, and regulator documentation.

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