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Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated March 25, 2026, relating to the financial statements of comScore Inc. and subsidiaries (the “Company”), appearing in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

/s/ Deloitte & Touche LLP

McLean, Virginia

March 25, 2026