Yes. For example, this report from the EU parliament from 2001: https://www.europarl.europa.eu/sides/getDoc.do?pubRef=-//EP//TEXT+REPORT+A5-2001-0264+0+DOC+XML

Yes. For example, this report from the EU parliament from 2001: https://www.europarl.europa.eu/sides/getDoc.do?pubRef=-//EP//TEXT+REPORT+A5-2001-0264+0+DOC+XML+V0//EN https://www.europarl.europa.eu/sides/getDoc.do?pubRef=-//EP/... This details a lot of what we knew about ECHELON from the mid 1990s to 2002: https://www.europarl.europa.eu/EPRS/EPRS_STUDY_538877_AffaireEchelon-EN.pdf https://www.europarl.europa.eu/EPRS/EPRS_STUDY_538877_Affair...