Threat Hunting Guide

How to Detect Cleartext Credentials and Unencrypted Traffic in PCAP

Automate credential exposure detection, audit HTTP Basic Authentication, and spot XSS attempts without manually sifting through TCP streams.

The Challenge: Hunting for Hidden Secrets

Detecting security misconfigurations like HTTP Basic Authentication or unencrypted API traffic is like finding a needle in a haystack. Network engineers and SOC analysts often have to blindly filter packets, hoping to catch credentials before an attacker does.

Manual Decoding

Even if you use filters like http.authbasic, Wireshark only shows the Base64 encoded string. You still have to manually extract and decode the payload to verify the exposure.

Hidden Web Exploits

Spotting Cross-Site Scripting (XSS) probes requires manually inspecting URL-encoded GET requests across thousands of HTTP packets to find malicious brackets (><).

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"We suspected an old legacy app was leaking passwords. Going through the PCAP, right-clicking 'Follow TCP Stream' on hundreds of connections just to find one unencrypted login took hours."

The Solution: Automated Security & Encryption Audits

Pcap AI eliminates manual payload inspection. By uploading your capture, the engine automatically calculates encryption ratios, extracts HTTP paths, and maps vulnerabilities directly to the MITRE ATT&CK framework.

  • Encryption Status: Instantly detects if 100% of your traffic is plaintext, highlighting exactly how much data is dangerously exposed.
  • MITRE T1040 (Network Sniffing): Automatically flags plaintext credentials in HTTP traffic and identifies the exact source and destination IPs involved.
  • MITRE T1190 (Public-Facing App Exploit): Detects URL-encoded XSS probes and malicious payloads without requiring manual string searches.
  • Clear Evidence: Generates a boardroom-ready PDF proving the exposure, complete with actionable mitigation steps like implementing HTTPS and CSP.

Wireshark Manual Analysis vs. Pcap AI

Manual (Wireshark)

Applying http.authbasic filters, following TCP streams, and manually decoding Base64 credentials. Process takes 30–60 minutes.

Pcap AI

Automated encryption ratio calculation, MITRE ATT&CK mapping, and XSS detection. Process takes less than 20 seconds.

Frequently Asked Questions

How do you find HTTP Basic Auth in Wireshark?

You can use the display filter http.authbasic to find packets containing basic authentication. However, the credentials will be Base64 encoded. Pcap AI automatically detects this unencrypted transmission and flags it as a high-severity MITRE T1040 risk.

Why is cleartext traffic dangerous?

When traffic is 100% plaintext, anyone sniffing the network can read passwords, session cookies, and sensitive data. This allows attackers to easily capture credentials and perform lateral movement within your network.

AI Analysis Output (Sample)

AI Analysis Proof for How to Detect Cleartext Credentials and Unencrypted Traffic in PCAP
Download Full PDF Report See exactly what our AI discovers.

Have a suspicious PCAP file?

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