Data Communication Between Agent and Cloud
Modern EDR platforms are designed with a distributed architecture, where lightweight agents installed on endpoints communicate with a central backend usually hosted in the cloud. Understanding how this communication works is essential for both attackers (who may want to block, delay, or spoof data) and defenders (who rely on this telemetry for threat detection and incident response).
Data Transmission Behavior
Real-Time Streaming
High-priority events sent immediately (e.g., malware detection)
Batch Upload
Low-priority data is cached and sent periodically
Offline Buffering
Data is stored locally if offline and sent upon reconnection
Heartbeat Messages
Periodic checks to indicate agent health/status
EDR agent-cloud communication is a critical link in the detection chain, enabling large-scale correlation and response. While attackers may attempt to block or spoof it, doing so without alerting defenders requires stealth, precision, and a deep understanding of the underlying telemetry architecture.
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