Since these apps often require users to log in with their Facebook credentials, there is a high risk of account hijacking or data theft. Third-party APKs from unofficial sources may also contain malware or "phishing" scripts.
By generating a token, you may inadvertently allow the app to post on your behalf, join groups, or message your friends, leading to your account being used as a "bot" for others. Ethical Alternatives for Boosting Engagement facebook auto reaction by rpwliker full