Hi, I'm Paul Querna

Understanding and Exploiting Go’s DSA Verify Vulnerability

Last week the Go project announced version 1.13.2. It contained a fix for a bug in the function. The bug is considered a security…

Mission vs Strategy: Github and Open Source

Today, Microsoft announced it’s 7.5 Billion dollar acquisition of Github. I want to start with a congratulations to my friends at Github — I…

My next journey, ScaleFT

I’m excited to announce that I’m co-founding a startup: ScaleFT Datacenter Knowledge: ScaleFT Wants To Help Ops Teams Tackle Complexity Of…

Putting Teeth in Our Public Cloud

Less than a year ago ago my team started building Rackspace OnMetal — the project was a whirlwind. Below I have outlined some of our major…

Announcing Rackspace OnMetal

My secret project has been announced: Rackspace OnMetal Cloud Servers. What is OnMetal? OnMetal is bare metal servers via the OpenStack Nova…

SSH Proxy Commands that use `sed`

If you find yourself using a Bastion or Jump Server very often, you quickly become familiar with man ssh_config. One trick I’ve recently…

Rackspace Interview Process

I believe we have built a reasonable and consistent set of best practices for on site interviews at the Rackspace San Francisco office. We…

ffjson: faster JSON serialization for Golang

ffjson is a project I have been hacking on for making JSON serialization faster in the Go programing language. works by generating static…

Security of Infrastructure Secrets

Credit Cards and Personally identifiable information (PII) have compliance standards for their storage and transportation. PCI-DSS being…

Fixing the Docker Ubuntu image on Rackspace Cloud

Docker is an awesome tool to build, manage and operate Linux containers. Docker has been gaining momentum for various use cases, and if you…

Adoption of TLS Extensions

TLS extensions expand the SSL/TLS protocols. The extensions have many uses, like adding more features, supporting more scalable patterns or…

Upgrades: SPDY, IPv6, FreeBSD, Jekyll

Upgrades: FreeBSD on Cloud Servers: This site is now being served from a Rackspace Open Cloud Server running FreeBSD 9. This includes using…

Retaliatory Only Patents

Today Yahoo launched a patent lawsuit against Facebook. Yahoo has always said they collect patents for defensive purposes only. Then Yahoo…

March 2012

Vacation: March 2 to 15: Japan March 16 to 19: San Francisco March 19 to 30: Chile and Argentina I don’t expect to be reading much email. I…

Designing Network Protocols

Hacker News user peterwwillis started a discussion about a new network protocol introduced by the mod_heartbeat module in Apache 2.4: It…

archived posts