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[SITUATION] · [ACTIVE] · [TECHNOLOGY]

3 clusters · 10 sources · 18 days · First seen 22 days ago · Last updated 5 days ago

Privacy scrutiny of period‑tracking apps

Overview

In July 2026 the Mozilla Foundation released a technical audit of six popular period‑tracking apps, finding a range of privacy scores. Some apps shared detailed reproductive‑health data with undisclosed third parties, while others kept data locally. The report warned that such information could be subpoenaed following the 2022 U.S. Supreme Court decision overturning Roe v. Wade.

Later that month the Dutch data‑protection authority (Autoriteit Persoonsgegevens) issued a public warning to women in the Netherlands, noting that about a quarter of Dutch women use menstrual or fertility‑tracking apps that collect health, fertility and sexual‑life information classified as special personal data. The regulator highlighted the lack of transparency about processing, the risk of data being shared with advertising partners, and the potential for hacking or extortion, and signalled a possible investigation after a complaint about the Flo app.

In early August the authority reiterated its caution, emphasizing the legal classification of the data and the vulnerability of users if information reaches advertisers or malicious actors.

A follow‑up Mozilla study on 7 August detailed the data‑sharing practices of the six apps: Stardust transmitted extensive health details to the analytics service RudderStack, and all apps sent basic identifiers to advertising platforms operated by Google, Meta, Microsoft and TikTok. Euki received the highest privacy rating, sharing virtually no data. Researchers again warned that post‑Roe v. Wade legal environments could expose users to subpoenas, underscoring ongoing international concern over the privacy and security of reproductive‑health tracking tools.

Entities

FLO · Autoriteit Persoonsgegevens · Mozilla Foundation · Monique Verdier · RudderStack

Claims

What the coverage asserts, and how well corroborated each claim is across sources.

[● 3 SOURCES] Approximately 25% of Dutch women use menstrual or fertility tracking apps. dagblad070.nl · www.skipr.nl · www.welingelichtekringen.nl
[● 3 SOURCES] Menstrual apps collect sensitive personal data such as health, fertility and sexual activity information. dagblad070.nl · www.skipr.nl · www.welingelichtekringen.nl
[● 3 SOURCES] The AP warns that it is often unclear how menstrual apps handle the data they collect. dagblad070.nl · www.skipr.nl · www.welingelichtekringen.nl
[● 3 SOURCES] The AP says apps may share user data with advertising partners without clear consent. dagblad070.nl · www.skipr.nl · www.welingelichtekringen.nl
[● 3 SOURCES] The AP warns that sensitive data from menstrual apps could be accessed by hackers and used for extortion. dagblad070.nl · www.skipr.nl · www.welingelichtekringen.nl
[● 3 SOURCES] The AP may launch an investigation into menstrual apps. dagblad070.nl · www.skipr.nl · www.welingelichtekringen.nl
[● 3 SOURCES] Bits of Freedom filed a complaint with the AP about the Flo app. dagblad070.nl · www.skipr.nl · www.welingelichtekringen.nl
[● 3 SOURCES] The Flo app is used by more than 200,000 women in the Netherlands. dagblad070.nl · www.skipr.nl · www.welingelichtekringen.nl

Timeline

5 days ago

[HEALTH] 2 sources
Period‑tracker apps share women's health data with tech firms
Mozilla’s review of six period‑tracker apps found Stardust shares detailed health data with analytics firm RudderStack, while others send basic IDs to major ad platforms; Euki scored best for privacy.
8 days ago

[TECHNOLOGY] 8 sources
Dutch privacy authority warns about menstrual tracking apps
Dutch privacy watchdog warns that menstrual apps collect sensitive health and fertility data, may share it with advertisers, and pose hacker risks; an investigation is possible after a complaint about the Flo‑c
22 days ago

[TECHNOLOGY] 2 sources
Mozilla report finds privacy risks in popular period‑tracking apps
Mozilla’s privacy assessment of six period‑tracking apps finds Stardust sharing data with RudderStack, while Euki stores data locally; the report raises concerns about reproductive‑health data use after Roe v.

Sources

aduc.it · cinemagia.wordpress.com · dagblad070.nl · ghanaiantimes.com.gh · mashable.com · period.nl · ppc.land · primorska.info · skipr.nl · welingelichtekringen.nl

This summary has been updated 1 time: see revision history