As long as there is a green check-mark everywhere, your system is protected.
A red exclamation mark indicates that your system is in immediate danger. You should then undertake immediate measures so that the protection of your data remains ensured.
If the placeholder icon is shown, this means that the relevant security function has not been activated by you (e.g. spam protection).
A yellow icon indicates that the user will soon need to intervene. This is the case, for example, if there is a program update for the software.
You can then use all the other software functions and program areas (e.g. virus protection or settings) if you prefer to actively look after the security of your system yourself - but you mustn't! You decide to what degree you would like to be involved with the subject of virus protection and data security. The product provides you with extensive online help.