DejaVu is a network traffic analysis service offered by Cienaga Systems that accepts packet capture (PCAP) files submitted by users for threat detection and analysis. Subscribers on paid EMS or DejaVu plans can upload PCAP files via a web form, providing context about suspected threats including threat names, actors, malware types, and other relevant details. The service then performs analysis on the submitted captures. The tool is oriented toward analyzing network activity from networks of meaningful scale, requiring at least several hours of traffic data from networks with 30 or more devices to produce actionable results. DejaVu is accessible to managed service provider (MSP) clients as well as direct enterprise subscribers, with access managed through a subscriber console and billing portal.