Content tagged athena

Joining CloudFront logs with JA4 fingerprints at ingestion time to classify every request — verified bots, spoofed crawlers, suspicious scrapers — before it reaches the dashboard.

How to capture TLS fingerprints at the CloudFront edge, route them through a serverless pipeline, and query them in Athena — using a CloudFront Function, a bash Lambda, SNS, Firehose, and S3.

User-Agent strings are trivially forged. TLS handshakes are not. How JA4 fingerprinting combined with ASN classification exposes distributed scraper clusters that look exactly like real browsers.

Raw requests are interesting, but how do we distinguish crawlers, retrieval systems, previews and humans?

Building a Visibility Layer for a Static Website with CloudFront, Athena and Grafana

First-party web analytics with zero dependencies: browser fetch → bash Lambda → curl SigV4 → SNS → Firehose → partitioned S3 → Athena. Under $1/month.

How migrating a bespoke OpenSearch ingestion pipeline led to two reusable Terraform modules for event analytics