Big data technology can collect endpoint security logs from various data sources like clickstream data, shopping cart data, and sensor data. These logs record events in operating systems and software and have characteristics of big data. Open source tools like Logstash and Elasticsearch can be used to ingest, process, and analyze these logs. Logstash is a server-side data processing pipeline that takes in data from multiple sources, while Elasticsearch is a distributed search and analytics engine. These tools can be incorporated into a big data event log architecture using other Hadoop components like Apache Flume, YARN, HDFS, and analytics frameworks.