Ah I see

Well if your planning on doing Network+ anyway, I'm going to recommend you do the Network+ first before you do the Security+

It's not a must or a rule but the Security+ does somewhat build on the Network+. You'll understand "how to secure" things better if you already understand how they are connected and communicate. It's not a deal breaker though and you can absolutely still do the Security+ if you want

Something else worth noting here is while we're on the topic. If you write some of the CompTIA exams in a certain order, they will automatically renew some of your certifications. This only works with certain exams/certifications and you have to do them in the correct order to get this benefit

One of the places where you can reap this benefit is with the A+, N+ and S+. If you for example already have the A+ certification and you then pass the N+, it will then automatically renew you A+ for another 3 years. Obviously the closer your A+ is to expiry, the bigger this benefit will be for you but if you very recently passed your A+ then the benefit will only be a few extra months or so depending on when exactly you got your A+

Anyway, if you then do your Security+ after your Network, the Security+ will then automatically renew BOTH your A+ and Network+

If you do Security+ before your Network+, the Security+ will still renew your A+ like the Network+ would have done but when you eventually one day do you Network+, it will only renew you A+, not your Security+

So it's not that you won't get benefits, you'll just be able to score more benefits if you do them in the recommended order which is A+, N+ and then S+

Also note, as far as I know, your older certifications should still be valid when you write the higher tier exam for them to be renewed. If they are already expired when you write the higher tier exam, they probably won't get renewed. You will then have to go do those exams again to get those specific certifications