The Eaglercraft client itself is generally safe. However, exercise caution on unknown public servers, as they may host inappropriate content or attempt to distribute malware.
If you are using an offline or self-hosted client, follow these steps to ensure you have the latest build: eaglercraft 188 client upd
Updating to the Eaglercraft 1.8.8 client is a straightforward process. Here's a step-by-step guide: The Eaglercraft client itself is generally safe