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How to maintain, check and improve the security of your Nextcloud installation

Welcome to the Wiki. you are welcome to improve and extend this post You Nextcloud likely contains work and data you don’t want others can access to. There is not absolute security but you can follow some general measures to verify if you system is secure enough and doesn’t offer easy target to bad actors. Update your system frequently the most important security measure is frequent updating. Often update include bug fixes and close security holes existed in previous versions. At th…