Léargas Security, a company specializing in providing actionable insights through data correlation from cyber and physical security controls, transitioned from using Splunk to the Elastic Stack to combat COVID-19-related cyber threats more effectively. The Léargas platform, visualized through Kibana, leverages Elastic's capabilities to process over 6TB of log data daily, enabling the detection of multi-contextual and multi-dimensional threats, including phishing and credential reuse attacks. This transition has reduced operational costs and improved performance by integrating data from various sources and utilizing natural language processing and sentiment analysis to identify potential threats. During the COVID-19 pandemic, Léargas used Elastic to track phishing campaigns targeting healthcare and pharmaceutical companies and to prevent identity theft by cybercriminals. These efforts are supported by public threat feeds and resources provided by Léargas to strengthen organizational defenses globally.