Data is a raw material, which is often unstructured, extracted in massive quantity, and requires processing before calling it an information and actionable intelligence. A good example is the Indicators of Compromise (IoCs). A big list of domain names or IP addresses can be ingested into the SIEM system to identify whether this list contains any malicious IP or not. If any suspicious IP is detected, then we can term this data as an actionable intelligence which has been evaluated from reliable sources, processed and enriched. Now, it can be used to identify trends, attack profile, and possible threats. In this article, we will see how data is gathered, processed, and act as an actionable delivery.
Threat Intelligence Feeds, in fact, are an actionable threat data related to artifacts or indicators collected from any third-party vendors in order to learn from other company’s visibility and access to enhance your own cyber threat response and awareness. The example of these third-party vendors includes Kaspersky Threat Intelligence and Alient Vault OTX. Threat Intelligence Feeds concentrate on a single area of interest and they are delivered online. For instance, these data feeds can be about IP addresses, hashes, or domains.
6. Responding to Threat or Vulnerability
In the previous steps, analysts have gathered enough data to answer their hypothesis. Two types of situations can occur. Either the real threat is found or the vulnerability is detected. In both cases, analysts action is necessary. The analysts must respond immediately when a real threat is identified. However, if there is any vulnerability, they should also resolve this before it becomes a really big nightmare.
Over the past many years, cyber threats have become greater in frequency and more sophisticated than ever. Current security mechanisms are based on traditional reactive approaches such as antivirus programs and firewalls who react once the incident has occurred. Under such circumstances, intruders have a chance to compromise your network either partially or entirely. In order to prevent this situation from happening, security practitioners initiate a threat hunting program as a vital part of their Security Operation Center (SOC).