I like space, so I put a picture of Space on my website.

I the CTO and co-founder of ScaleFT.

other stuff:


  • email: me at this domain name.
  • irc: pquerna on freenode/efnet.


Understanding and Exploiting Go’s DSA Verify Vulnerability

October 24th, 2019

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

June 4th, 2018

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

May 11th, 2015

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

July 2nd, 2014

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

June 20th, 2014

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`

June 9th, 2014

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

April 27th, 2014

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

March 31st, 2014

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

November 9th, 2013

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

October 15th, 2013

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

September 7th, 2012

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

September 5th, 2012

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

March 13th, 2012

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

March 2012

March 1st, 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

February 22nd, 2012

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

Written by Paul Querna, CTO @ ScaleFT. @pquerna