How to Build a Weekly Threat Briefing When You Are the Threat Intel Team

Source selection is the most important decision in this workflow. More sources mean more time, more noise, and more decision fatigue. Five sources, checked in order, is sufficient for a practitioner-grade weekly briefing.

Source 1, CISA KEV catalog (10 minutes): Go to cisa.gov/known-exploited-vulnerabilities-catalog and filter by date added in the past 7 days. CISA only adds vulnerabilities with confirmed active exploitation evidence. Every new KEV entry is a candidate for your briefing. Note the CVE ID, affected product, and CISA-mandated remediation deadline.

Source 2, CISA Alerts and Advisories (5 minutes): Go to cisa.gov/news-events/cybersecurity-advisories and review new alerts published since your last briefing. CISA advisories are co-authored with FBI, NSA, and international partners, they represent confirmed, high-confidence threat intelligence. When one drops, it leads your briefing.

Source 3, BleepingComputer (10 minutes): BleepingComputer covers active campaigns, confirmed breaches, new ransomware variants, and zero-day disclosures with practitioner-level technical depth. Read headlines only and open 3 to 5 that match your organization's technology stack or sector. The test: would an attacker targeting an organization like yours find this useful? If yes, it is a candidate.

Source 4, Decryption Digest daily posts (5 minutes): The daily posts cover the single most operationally significant threat from the past 24 hours with IOCs and immediate remediation steps already extracted. Scan the week's posts for any item matching your stack or sector. IOCs from confirmed active campaigns go directly into your briefing as concrete action items.

Source 5, Your sector ISAC (5 minutes): If your industry has an Information Sharing and Analysis Center, check its member portal for the past week. FS-ISAC (financial services), H-ISAC (healthcare), E-ISAC (energy), WaterISAC, and Auto-ISAC publish sector-specific threat intelligence not available through general sources. If your sector has an ISAC and you are not a member, join, most offer free or subsidized membership for smaller organizations.

Remaining 10 minutes: writing and formatting the briefing output.

After checking five sources, you will have between 8 and 20 potential items. The briefing holds a maximum of 6 items, 3 to 4 is ideal. Apply this filter to cut everything that does not belong:

Question 1: Does this affect technology we run? If the CVE targets software you do not use or the campaign targets an industry you are not in, cut it. Irrelevant threats in a briefing train your audience to stop reading.

Question 2: Is there confirmed active exploitation, or only theoretical risk? Prioritize CISA KEV additions and confirmed campaign activity over newly disclosed vulnerabilities with no exploitation evidence. A CVSS 9.8 with no exploitation evidence is lower priority than a CVSS 7.2 in CISA KEV. See the CVSS vs. Real-World Exploitability guide for the full prioritization framework.

Question 3: Is there a concrete action your team can take this week? If the item has no actionable response, no patch available, no IOC to block, no configuration to change, hold it for informational context only and do not assign it an action item.

Question 4: Has your audience already seen this? If the item generated widespread news coverage, your CISO likely already knows it exists. Brief the operational response, not the news summary.

The briefing format that gets read and acted on fits on one page. Use this structure every week without variation:

WEEKLY THREAT BRIEFING, [DATE] Prepared by: [Your Name] | Classification: Internal

THIS WEEK'S LEAD THREAT [One sentence: what happened, to whom, and why it matters for our organization specifically.]

ACTIVE EXPLOITATIONS THIS WEEK

• CVE-XXXX-XXXXX | [Product] | CVSS [score] | Patch: [available/pending] | CISA KEV: [yes/no]
• CVE-XXXX-XXXXX | [Product] | CVSS [score] | Patch: [available/pending] | CISA KEV: [yes/no]

SECTOR INTELLIGENCE [One to two sentences on confirmed active campaigns targeting your industry this week. Skip if nothing relevant.]

CREDENTIAL AND DARK WEB EXPOSURE [One sentence if applicable. Skip this section entirely if nothing relevant, do not fill with boilerplate.]

THIS WEEK'S ACTIONS

1. [Specific action], Owner: [Name], Due: [Date]
2. [Specific action], Owner: [Name], Due: [Date]
3. [Specific action], Owner: [Name], Due: [Date]

SOURCES: [3 to 5 links]

The lead threat section is the most critical. One sentence, maximum. State the most alarming specific outcome, a named organization compromised, a dollar figure, a count of affected systems, and its relevance to your organization. If your CISO reads nothing else, they should understand from that sentence whether this week requires executive attention.

Patch Tuesday falls on the second Tuesday of every month and typically produces 50 to 150 new CVEs. A major incident can generate dozens of relevant advisories in 48 hours.

On high-volume weeks, the briefing structure stays identical, the template does not expand. Your job is to apply the four-question filter more aggressively, not to document every relevant item. The CISO's job is to make resource allocation decisions, not to read a comprehensive threat digest.

For Patch Tuesday specifically: identify the one or two CVEs with confirmed exploitation evidence or a CISA KEV addition. Everything else from the release goes into a separate patch tracking document your IT team uses for prioritization, it does not go in the executive briefing.

For major incidents that span multiple weeks: brief the incident in the Lead Threat section the week it breaks. Consolidate subsequent updates into a single status line in following weeks rather than repeating full context.

The most common briefing failure is not quality, it is format mismatch. CISOs need to know three things: what is the risk to our organization, what do we need to do, and who owns it. A briefing that buries those answers in three pages of threat background gets skimmed and forgotten.

Name owners on every action item. 'Patch Exchange Server for CVE-XXXX' is a suggestion. 'Patch Exchange Server for CVE-XXXX, Owner: [IT Lead Name], Due: Friday EOD' is an assignment. CISOs who receive briefings with named owners are measurably more likely to follow up on completion.

Calibrate inclusion criteria so everything is relevant. When you include something, the CISO should be able to assume it affects your environment, not that you are reporting all published CVEs and leaving severity assessment to them. If you include a threat that does not apply to your stack twice, you have permanently lowered their confidence in your briefing's relevance filtering.

Keep the format identical every week. Executives learn to read familiar formats quickly. If the lead threat is always in the same position, the action items always appear at the bottom with the same structure, and the length never exceeds one page, the briefing becomes a 60-second read that actually drives decisions.