The Spanish government has banned the use of Palantir in critical state systems due to national security concerns.

Spanish government ‘quietly bans’ use of Palantir over national security concerns Very sensible. Others including UK should do the same. https://www.middleeasteye.net/live-blog/live-blog-update/spanish-government-quietly-bans-use-palantir-over-national-security

Spanish government ‘quietly bans use of Palantir’ in critical state systems over fears of national security leaks https://www.lbc.co.uk/article/spanish-bans-palantir-national-security-5HjdcNp_2/