When applying to ENISA, they still quote Windows 7 as one of their utilities. Windows 7 stopped security updates in January 2020. This is ridiculous and sad. When EU parliament voting procedure went online, it was a desaster. The widespread use of unsecure messengers of MEPs, the slow EU websites, the comparatively bad EU parliament tv (it's somewhat better now)...it's clear that the state of IT within the EU administration is not good. Using FOSS has several advantages, some of which are: - The use of FOSS OSes usually implicitely enlarges the user's digital skillset constantly and in a way other common OSes do not. This alone is worth more than any money potentially saved or spent. - A more widespread use of FOSS OSes leads to more FOSS in general FOSS today is the single most powerful thing causing advancements in IT. - Capable people with an IT background will be more willing to work for EU agencies The only disadvantage: - The mitigation requires some effort and (encompassing all applications required) money