How to know about vulnerabilities?

[freewebsitescan]

If we use any vulnerability scanner then its safe or nah? i meant if we wanna make sure our whole system is secured and theres no vulnerability left then ? is there any way to confirm this?
thanks in advance!

[Resheph]

If we use any vulnerability scanner then its safe or nah? i meant if we wanna make sure our whole system is secured and theres no vulnerability left then ? is there any way to confirm this?
thanks in advance!

There is not really any way to be 100% secure. Regular vulnerability scans, patching and periodic redteaming or penetration testing should cover most things.
Unfortunately users are the weak link today.