Preliminary research

Building certgrep.sh: a free certificate transparency search engine

Juxhin D. Brigjaj · Have I Been Squatted · 20 August 2026

AI-collected research leads through 3 October 2026, including bounded month-by-month reviews of selected social and community sources from January through September. Unranked, incomplete, not community-vetted, and subject to change.

This engineering postmortem explains why an FST-based certificate search design failed for substring and alternation queries, then moves to trigram candidate filtering. It details compact CT-log coordinates, on-demand certificate hydration, parallel sorted runs and deterministic merging behind the deployed certgrep service.

Record

Researcher

Juxhin D. Brigjaj

Published by

Have I Been Squatted

Date

20 August 2026

In the archive

• Collected in the 2026 preliminary research sweep

Related sources

• Launch post
• Deployed tool

Tags

• certificate-transparency
• regex
• tooling
• detection
• typosquatting
• owasp-a06-2021
• owasp-a09-2021

This page is the archive's own catalogue record. The research is the work of Juxhin D. Brigjaj, first published at the original source. Preserved copies are kept so the citation survives its host.