when ever my security plugins show new updates available, I will update my plugins. I use a couple of security plugins on my websites. I also renew my security certificates every year
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Update website security is up to hoster you have to pay for security options and hoster securises your hosting instead of head acke to securise his website, what is up to you if you are devellopping on VPS you have to have non hackable code means that handle SQL statement with prepared statement like if you are using PHPMyAdmin and PostGreSQL or how is making a filter when storing images to GridFSStorage so there is a mechanism to follow to check that it is really an image or video or audio or PDF before store to mongodb database, to make sessions with jwt-redis session, to make also backlink unavailable to prevent form resubmission, to make redirection algorithm if you are using angularjs and a build of your react code if visitor visit a page then there will be a redirection from build to this page not 404 not found error, all theses steps may require a security team with you to study all these cases as when devellop alone you may miss many security steps.