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Question 288 - CAS-004 discussion
A security analyst is reviewing a new IOC in which data is injected into an online process. The IOC shows the data injection could happen in the following ways:
* Five numerical digits followed by a dash, followed by four numerical digits; or
* Five numerical digits
When one of these IOCs is identified, the online process stops working. Which of the following regular expressions should be implemented in the NIPS?
A.
^\d{4}(-\d{5})?$
B.
^\d{5}(-\d{4})?$
C.
^\d{5-4}$
D.
^\d{9}$
Your answer:
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