A security operations center (SOC) analyst is investigating reports of a new ransomware campaign that exploits a recently disclosed zero-day vulnerability across multiple sectors. The analyst needs the MOST authoritative, immediately actionable, and freely distributable source of indicators of compromise and mitigation guidance to share with internal stakeholders. Which source should the analyst consult first?
Crowdsourced indicators aggregated from social media
A joint cybersecurity advisory published by CISA and partner agencies
A subscription-based commercial threat-intelligence portal
Joint cybersecurity advisories issued by government agencies-for example, the U.S. Cybersecurity and Infrastructure Security Agency (CISA), the FBI, and international partners-are official bulletins that consolidate validated indicators of compromise and recommended mitigations. Because they come from national authorities charged with protecting critical infrastructure, these bulletins carry high credibility and are released as soon as actionable information is confirmed. Although a commercial threat-intelligence portal may provide valuable insights, it requires a paid subscription and often carries licensing restrictions. Vendor blog posts focus on a single product and may omit wider IOCs, while crowdsourced social-media feeds are unvetted and can include inaccurate data.
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Why are government bulletins considered a reliable source of threat intelligence?
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What kind of information do government bulletins include?
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How do government bulletins compare to paid threat intelligence feeds?