You can extract valuable insights from your authentication logs by implementing best practices such as logging all authentication events, including relevant information like user ID, IP address, and outcome. Using a standardized key-value format for your logs makes it easier to parse and analyze them with tools like Datadog's Grok Parser, allowing you to quickly identify security threats and trends in login sources and methods. By standardizing attributes like `usr.id`, `evt.category`, `evt.name`, `evt.outcome`, and `network.client.ip`, you can easily search and aggregate data across all your logs. Additionally, using Datadog's Cloud SIEM service provides turn-key Detection Rules that scan 100% of your ingested logs in real-time for common attacker techniques, generating Security Signals with key data about the event, including suggestions on response strategies.