｢ Once triggered, StarDict sends the selected text in plaintext over HTTP to third-party servers in China, namely dict.youdao.com and dict.cn. And to make matters worse, these requests are made over unencrypted HTTP, making the data visible to anyone monitoring the network—whether on a local LAN or through a compromised router ｣

https://linuxiac.com/stardict-plugins-in-debian-13-raise-privacy-concerns/