suspicious files

Dear developers, I have some questions about easyblog

1) My antivirus scanner marks files like
/administrator/components/com_easyblog/controllers/blogs.php.backup
/administrator/components/com_easyblog/views/migrators/view.html.php.rej

as suspicious and unsafe

May I remove and cut off this ".backups" ".rejes" at all?

Another suspicious file:
/media/com_easyblog/node_modules/.bin

And suspected as javascript virus:
/media/foundry/2.1/scripts/redactor.js


2) What can you recommend against spambots? The component has appeared to be very attractive for spammers.