If your PCAP contains sensitive information we recommend that you anonymize it before uploading
PCAPs may contain sensitive information that you might not want to expose to a shared environment. We recommend that you anonymize all trace files that contain personal information with Trace Wrangler before uploading. You can find a good tutorial here The Wireshark Q&A trace file sharing tutorial.
Tracewrangler can anonymize packets until layer 4 (UDP/TCP/ICMP/ICMPv6). If your PCAPs contain sensitive data in Layer 7 protocols (HTTP, SMTP, SMB, etc) we recommend you to use packet slicing to remove the data payload from the packets before uploading the trace files.