determination bugs

Move to How-To and Troubleshooting. The Hacks sub-forum is for coding questions.

how can i determination bugs of my site ? is there any web site for find your web site bugs or something about security bug ?

Are you experiencing any signs of having a compromised site? You can scan your site with online tools such as these.

https://sitecheck.sucuri.net/
https://www.google.com/transparencyreport/safebrowsing/diagnostic/

Generally if your host is responsible, you keep up your code versions and you only get code from reputable sites then you should be fine.

If you want to take additional precautions then this can help you too.

http://codex.ww.wp.xz.cn/Hardening_WordPress