Threat intelligence is information about known cyber threats — who is behind them, how they work, what systems they target, and what signs they leave behind. For a large enterprise, this involves dedicated analysts, proprietary feeds, and structured processes. For a small business, threat intelligence is simpler and more practical: it is the habit of checking whether the activity you observe in your environment matches known patterns of malicious behaviour.
Reputation is not the same as proof
Threat intelligence tools assign reputation scores to IPs, domains, URLs, and files based on reports from security vendors, honeypots, and community submissions. A high abuse score on an IP address means that other organisations have reported that IP as a source of malicious activity. It does not mean the IP successfully attacked you — it means you should investigate further rather than dismiss the activity.
Reputation data has a shelf life. An IP address used by a botnet last year may now be a clean residential address assigned to a different ISP customer. A domain registered for phishing may have been taken down and reassigned. Threat intelligence is most useful when it is current and when it is used to prioritise investigation rather than to make final decisions.
False positives are common — legitimate IP ranges for large cloud providers (AWS, Google Cloud, Cloudflare) frequently appear in threat feeds because they are used by both legitimate services and attackers. Context about what the IP or domain was doing in your environment matters more than a raw reputation score.
How to avoid false confidence
A clean result from a threat intelligence check does not mean an entity is safe. It means it has not been reported to the databases you checked. Novel malware, newly registered phishing domains, and attackers using clean infrastructure for initial access will not appear in threat feeds. Using a tool and getting a "no detections" result should reduce concern but not eliminate it — particularly if the behaviour that prompted the check is still unusual.
Combine threat intelligence with other signals. An IP address with a clean reputation that also appears in your access logs making hundreds of requests to a single PHP file in a short window is still suspicious, regardless of its reputation score. The pattern of behaviour is as informative as the reputation lookup.
How to summarise findings for a decision maker
If you are bringing threat intelligence findings to a business owner, manager, or board member who is not technical, the most useful summary answers three questions: What did we observe? What does it mean in plain English? What do we think should happen next?
Avoid leading with technical indicators (IP addresses, CVE numbers, vendor detection counts) without translation. "We saw 200 failed login attempts from an IP address that has been reported for automated scanning attacks. We have blocked that IP and enabled multi-factor authentication on the affected accounts. No successful logins occurred." is more actionable than a list of raw findings.
- Use VirusTotal and AbuseIPDB for quick reputation lookups on suspicious IPs and domains.
- Treat a clean result as "not reported yet" rather than "confirmed safe."
- Combine reputation data with behavioural context — what was the entity doing in your environment?
- When summarising for non-technical decision makers: what happened, what it means, what to do next.
- Keep a record of checks and findings — dated, with context — for your incident log.
- If a finding is ambiguous, escalate to someone with more context rather than acting on incomplete information.
Threat intel is most useful when it answers a practical question.
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