In the early days of threat intelligence services, how frequently were vendor updates typically released?

In the early days of threat intelligence services, vendors typically focused their efforts on providing updates on a less frequent basis to allow for thorough analysis and collection of data regarding emerging threats. The correct answer highlights the incremental nature of these updates — starting with annual releases that gradually progressed to quarterly and eventually monthly updates as the landscape of cybersecurity threats evolved and the demand for timely information increased.

This pattern of moving from infrequent to more regular updates reflects the growing recognition of the fast-paced nature of threats in the cybersecurity arena, necessitating a shift towards quicker adaptation and dissemination of intelligence among users. The understanding that threats can emerge rapidly informs the need for a more robust and dynamic approach to updating threat intelligence, aligning better with the increasing complexity and volume of cyber threats observed over time.

In contrast, the other options do not accurately represent this historical context, as they either suggest too frequent of updates too early in the development of threat intelligence services or fail to capture the typical progression seen in the industry.