Refer to the exhibit.

The STIX intelligence feed in the exhibit identifies specific malicious domains, such as:

fightcovid19.shop

nocovid19.shop

stopcovid19.shop

These are categorized as “Malicious FQDN Indicator.” The recommended cybersecurity actions when such threat intelligence is received are:

D. Block network access to identified domains: This directly prevents users or systems from communicating with known malicious infrastructure and is a critical first step in threat mitigation.

B. Add a SIEM rule to alert on connections to identified domains: This ensures that any attempted communication with these domains is flagged for immediate review and action, enabling real-time threat detection and incident response.

Blocking all .shop domains (Option A or C) would be overbroad and potentially disruptive, as many legitimate websites also use that TLD. Option E (routing to block hole) could be valid as a DNS strategy, but B and D represent the most actionable and precise responses per standard incident response practices.