Hack.lu 2026

Web forensics with Lookyloo and Lacus

Websites are complex, they change all the time, it is extremely tedious to reproduce the load of one URL, especially when the malicious actors don't want you to probe their infrastructure.

During this workshop, we will look at techniques used by malicious actors to trick unsuspecting users, find phishing campaigns, and see a lot of slop.


This workshop will cover the basics of Lookyloo, and Lacus, the infrastructure and use-cases:

Capturing a website or rendering an HTML document
Detailing the capture settings, different browsers
Browser instrumentation and / or headfull capture
Socks5 Proxies
Init scripts post rendering
Monitoring
Automatic reporting
Why using Lacus
Onion / I2P support

You may have attended talks or workshops about lookyloo in the last few years, but we implemented many new features in the last year.

Indexing, pivot and search across the dataset
Forensic acquisition with Trusted Timestamps (RFC3161)
Use of Iframes in the tree, export rendered iFrames contents
Proton VPN support for proxies
Automatic and manual categorization on submission
Remote headfull captures using Xpra
Trigger a monitored capture from the capture page
Raphaël Vinot

Formerly member of CIRCL, I moved to France but didn't go that far in spirit as I'm still part of the developers and maintainers for a whole bunch of tools there. Some say it is too many, we disagree.