Hi smarneh,
No, you cannot take JNCIS-SEC without JNCIA-SEC.
What arabidoux means to say is, if you take JNCIS-SEC and clear it, JNCIA-SEC and JNCIA-Junos will be re-certified. Here, in your case, as you do not have JNCIA-SEC, you need to attempt JNCIA-SEC first which can also receritfy JNCIA-Junos. Post JNCIA-SEC, you can go for JNCIS-SEC.
Hope this clears it.
Thanks,
Pradeep
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