Control Definition
The organization must gather information about current and emerging information security threats from relevant sources and analyze it to produce threat intelligence it can act on.
Control Objective
To understand the current threat landscape relevant to the organization, enabling proactive defense measures and informed security decisions based on real-world threat data rather than assumptions.
What This Really Means
Threat intelligence means systematically gathering, analyzing, and using information about security threats that could affect your organization. Instead of waiting to be attacked and reacting, you proactively learn what attackers are doing, what vulnerabilities they are exploiting, and what tactics they are using, then adjust your defenses accordingly.
Think of it like a weather forecast for cybersecurity: meteorologists collect data from satellites, weather stations, and historical patterns to predict storms. Similarly, threat intelligence collects data from security incidents, dark web monitoring, vulnerability disclosures, industry reports, and attack patterns to predict and prepare for cyber threats. You want to know: What ransomware groups are targeting your industry? What new vulnerabilities are being exploited? Are your company credentials leaked on the dark web? What phishing campaigns are circulating?
Threat intelligence is not just reading security news. It involves: collecting relevant threat data (vulnerability feeds, security advisories, incident reports), analyzing it to understand what matters to YOUR organization (a healthcare threat may not matter to a retailer), and taking action (patching specific vulnerabilities, blocking known malicious IPs, training users about current phishing tactics, updating firewall rules).
This control applies to organizations of all sizes. Small companies can use free threat intelligence feeds (CERT-In alerts, vendor security bulletins, CISA advisories). Larger organizations invest in commercial threat intelligence platforms (Recorded Future, CrowdStrike Threat Intelligence) and dedicated security analysts. The goal is not perfection - it is knowing more about threats targeting you than you did yesterday, and using that knowledge to improve your security posture.
Why It Matters
Without threat intelligence, security is reactive guesswork. You protect against yesterday's threats while attackers evolve their tactics. Organizations that ignore threat intelligence repeatedly fall victim to known attack patterns that could have been prevented.
Without effective threat intelligence, organizations face:
- •Delayed Response to Emerging Threats: Learn about new vulnerabilities weeks after attackers are already exploiting them in the wild
- •Wasted Security Investments: Spend budget on controls that do not address actual threats facing your organization or industry
- •Preventable Breaches: Fall victim to attacks that peers in your industry already experienced and defended against
- •Ineffective Incident Response: Investigate incidents without context about attacker tactics, techniques, and procedures (TTPs)
- •Compliance Failures: CERT-In directions require reporting covered incidents within 6 hours, and DPDPA expects reasonable security safeguards - both hard to meet without awareness of current threats
- •Supply Chain Attacks: Miss warnings about compromised vendors, malicious software updates, or third-party breaches affecting your systems
Recent attacks prove this: when Log4Shell was disclosed, organizations with a working threat intelligence process knew within hours whether and where they ran Log4j; those without spent weeks finding out while exploitation was already widespread. WannaCry ransomware exploited a vulnerability Microsoft patched months earlier - organizations with threat intelligence prioritized that patch, others got encrypted. In India, CERT-In issues regular security advisories about threats targeting Indian organizations, but many companies never see them because they lack threat intelligence processes.
Threat intelligence is force multiplication: one analyst monitoring threat feeds can inform security decisions protecting thousands of systems. It transforms security from reactive firefighting to proactive defense.
Implementation Guidance
Identify Relevant Threat Intelligence Sources
Determine which threat intelligence sources matter for your organization. Start with free authoritative sources: CERT-In security advisories (specifically for India), CISA Known Exploited Vulnerabilities catalog, vendor security bulletins (Microsoft, Google, AWS, Oracle), NIST National Vulnerability Database (NVD), and industry-specific ISACs (Information Sharing and Analysis Centers). For commercial intelligence, consider: threat intelligence platforms (Recorded Future, Anomali, ThreatConnect), dark web monitoring services (Flashpoint, Digital Shadows), and industry threat reports (Verizon DBIR, Mandiant Threat Intelligence). Choose sources matching your industry, technology stack, and threat profile.
Establish Threat Intelligence Collection and Distribution Process
Create workflow for consuming threat intelligence: Designate responsible person/team (security analyst, IT manager, or outsourced SOC). Subscribe to relevant threat feeds and mailing lists. Set up automated collection using threat intelligence platforms or SIEM integrations. Establish daily review routine: spend 30-60 minutes reviewing new advisories, vulnerabilities, and threat reports. Distribute actionable intelligence to relevant teams: email critical vulnerabilities to IT for patching, share phishing campaigns with employees, alert executives about industry-specific threats. Use ticketing system to track threat intelligence items requiring action.
Analyze Threat Intelligence for Organizational Relevance
Filter massive threat data to what matters for YOUR organization. Not every vulnerability or threat is relevant. Analyze based on: Do we use the affected product/technology? Is our industry being targeted? What is the exploitability and impact? Are we already protected by existing controls? Prioritize threats: Critical (actively exploited, affects our systems, no workaround - patch immediately), High (exploitation likely, affects our systems - patch within 7 days), Medium (affects our systems but lower risk - patch within 30 days), Low (affects products we do not use - monitor only). Document analysis to justify decisions: "We are not vulnerable because we do not use affected software" or "We prioritized this because our industry is being targeted."
Integrate Threat Intelligence with Security Operations
Make threat intelligence actionable by integrating it into security tools and processes. Feed threat intelligence into: SIEM (configure alerts for known malicious IPs, domains, file hashes), Firewall and IDS/IPS (block indicators of compromise automatically), Endpoint protection (update detection rules for new malware variants), Vulnerability scanners (prioritize scanning for newly disclosed vulnerabilities), Email security (block phishing domains and sender addresses), Incident response playbooks (update procedures based on new attack techniques). Use standardized formats (STIX/TAXII) for automated threat feed integration. Create feedback loop: when incidents occur, analyze them for new threat intelligence to share with community.
Participate in Threat Intelligence Sharing Communities
Join industry-specific threat intelligence sharing groups to receive and contribute threat information. In India: the Cyber Swachhta Kendra (CERT-In's Botnet Cleaning and Malware Analysis Centre), CSIRT-Fin for the financial sector, and NCIIPC for critical information infrastructure. Internationally: FS-ISAC (financial services), H-ISAC (healthcare), Retail ISAC, or regional ISACs. Participate in vendor threat intelligence programs (Microsoft Defender Threat Intelligence, Google Threat Analysis Group). Share anonymized threat data from your incidents to help community. Benefits: early warning about attacks targeting your sector, access to technical indicators others discovered, collective defense against common threats.
Conduct Regular Threat Intelligence Briefings
Communicate threat intelligence findings to decision-makers and technical teams. Monthly executive briefing: summarize threat landscape, highlight industry-specific threats, recommend security investments based on emerging risks. Weekly technical briefing: share new vulnerabilities, attack techniques, and recommended mitigations with IT and security teams. Ad-hoc alerts: immediately notify relevant teams about critical threats requiring urgent action (zero-day exploits, ransomware targeting your industry, credential leaks). Tailor communication: executives need business impact, technical teams need implementation details. Track actions taken based on threat intelligence to demonstrate value.
Measure and Improve Threat Intelligence Effectiveness
Track metrics to assess threat intelligence program value: Time from threat disclosure to organizational awareness (goal: <24 hours for critical threats), percentage of vulnerabilities patched before exploitation (goal: 100% for critical), number of incidents prevented by proactive threat intelligence (blocked IPs, filtered phishing domains), threat intelligence coverage (are we monitoring all relevant sources for our industry?), actionability rate (what percentage of threat intelligence results in defensive action?). Quarterly review: evaluate sources (are they timely and relevant?), assess team skills (do analysts need training?), identify gaps (what threats are we missing?). Continuously refine process based on what works.
Audit Evidence
During your ISO 27001 certification audit, auditors will expect to see the following evidence to demonstrate compliance with A.5.7:
Documentation
- Threat intelligence policy defining sources, collection process, analysis methods, and distribution procedures
- List of threat intelligence sources subscribed to (CERT-In, vendor bulletins, commercial feeds)
- Evidence of threat intelligence analysis and prioritization (threat reports, risk assessments)
- Records of threat intelligence distribution (security bulletins sent to teams, executive briefings)
- Proof of action taken based on threat intelligence (patches applied, firewall rules updated, user alerts)
Interviews
- Security team about threat intelligence sources used and how intelligence is analyzed
- IT team about how they receive and act on threat intelligence (vulnerability alerts, patching priorities)
- Management about threat intelligence briefings and how threats inform security strategy
- Incident response team about how threat intelligence is used during investigations
Observations
- Review recent threat intelligence reports: verify they analyze relevance to the organization
- Check SIEM or security tools: verify threat intelligence feeds are integrated (malicious IP blocks, IOC alerts)
- Review incident response procedures: verify they reference current threat intelligence and attack patterns
- Test timeliness: select recent critical vulnerability (within 7 days) and verify organization was aware and took action
Practitioner Insights
Most organizations I audit claim they do threat intelligence because someone reads news articles. That is not threat intelligence - that is browsing the internet. Real threat intelligence requires: systematic collection from authoritative sources, analysis of relevance to YOUR environment, and documented action. I ask "What did you do when Log4Shell was disclosed?" If the answer is "We had to scramble to figure out if we were affected," you do not have threat intelligence. You should have known within hours whether you use Log4j and where, because you have asset inventory and vulnerability management driven by threat intelligence.
Indian organizations often ignore CERT-In advisories, which is a huge mistake. CERT-In publishes detailed threat intelligence specifically about attacks targeting Indian infrastructure, government sites, and businesses. These advisories are free, timely, and highly relevant. I have seen companies spend lakhs on commercial threat intelligence while ignoring free authoritative sources from their own government. Start with CERT-In - subscribe to their mailing list, review every advisory, assess if it affects you, and take recommended actions. Only add commercial intelligence if CERT-In plus vendor bulletins are insufficient.
Common Challenges & Solutions
Challenge
We are overwhelmed by threat intelligence - too many alerts, advisories, and vulnerabilities to process. We cannot keep up.
Solution
Focus threat intelligence on what matters: (1) Filter by relevance: only review threats affecting technologies you actually use. (2) Automate collection and initial filtering: use threat intelligence platforms (TIP) that auto-correlate threats with your asset inventory and highlight relevant items. (3) Prioritize ruthlessly: only actively exploited vulnerabilities and confirmed attacks targeting your industry require immediate action. (4) Outsource analysis: use managed detection and response (MDR) or SOC-as-a-service providers who monitor threat intelligence and alert you only about actionable threats. (5) Start small: focus on top 3 sources (CERT-In, Microsoft Security Response Center, CISA) and expand only when you have capacity.
Challenge
Our threat intelligence is not actionable - we receive generic advisories but do not know how to translate them into specific defensive actions.
Solution
Bridge the gap between intelligence and action: (1) Create threat intelligence playbooks: for each common threat type (ransomware, phishing, web vulnerabilities), document specific actions (what to patch, what to block, who to notify). (2) Link intelligence to controls: when a threat is identified, map it to ISO 27001 controls and existing security measures - what control would prevent this? (3) Use MITRE ATT&CK framework: map threat actor tactics to defensive techniques you can implement. (4) Assign ownership: every threat intelligence item should have an owner responsible for determining action. (5) Provide training: teach IT team how to interpret threat intelligence and translate advisories into firewall rules, patches, or configuration changes.
Challenge
Commercial threat intelligence is expensive - we cannot afford platforms like Recorded Future or CrowdStrike Intelligence.
Solution
Build effective threat intelligence using free sources: (1) CERT-In advisories (free, India-specific). (2) CISA Known Exploited Vulnerabilities catalog (free, authoritative). (3) Vendor security bulletins (Microsoft, Google, Oracle, Adobe - all free). (4) MITRE ATT&CK and CVE databases (free). (5) AlienVault OTX (free open threat exchange). (6) Community threat feeds (abuse.ch, Spamhaus, URLhaus - free). (7) Industry reports (Verizon DBIR, Microsoft Digital Defense Report - free annual reports). Combine these with automation: use open-source SIEM (Wazuh) or TIP (MISP) to aggregate and correlate free feeds. This provides 80% of value for 0% of cost. Add commercial intelligence only for advanced needs (dark web monitoring, tailored reports, dedicated analyst support).
Challenge
We do not have dedicated security analysts - threat intelligence is one more task for already overloaded IT team.
Solution
Make threat intelligence lightweight and efficient: (1) Dedicate 30 minutes daily for one person to review threat feeds - rotate this responsibility across IT team. (2) Use automation: configure email filters to highlight critical advisories (CERT-In subject line contains "Critical" or "High"). (3) Leverage vendor relationships: Microsoft, AWS, and Google provide free threat briefings for customers - attend quarterly vendor security webinars. (4) Outsource to managed services: pay for managed SIEM or EDR that includes threat intelligence monitoring and alerts you only about actionable threats affecting your environment. (5) Join industry peer groups: informal WhatsApp/Telegram groups where peers share threat intelligence saves everyone time versus individual research.
Challenge
Threat intelligence arrives too late - by the time we hear about a threat, we have already been attacked or the vulnerability is widely exploited.
Solution
Improve threat intelligence timeliness: (1) Use real-time feeds: instead of weekly security newsletters, subscribe to automated feeds that push alerts immediately (CERT-In RSS feed, CISA alerting). (2) Monitor social media: security researchers often tweet about vulnerabilities before official advisories - follow key researchers and hashtags like #0day. (3) Deploy honeypots: set up decoy systems that attract attackers and generate early warning about new attack patterns. (4) Participate in ISACs: Information Sharing and Analysis Centers provide member-only early warnings about threats targeting specific industries. (5) Use threat hunting: proactively search your environment for indicators of compromise (IOCs) from recent intelligence - find threats before they find you.
