Does a one-month internship in cyber security count as professional work experience for my application for a Master's?

Yes, a one-month internship in cybersecurity counts as professional work experience for your U.S. master's application.

Internships, even short-term, show practical skills and industry exposure. Listing this experience highlights your commitment and can strengthen your profile.

However, if you apply to programs that require full-time work experience (like some MBAs), internships may not fully meet those criteria. For most technical master's programs, your internship is a valuable addition.