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Sqreen Blog

The Official Sqreen Blog

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Dev

54 posts
  • Dev
  • Java
  • 11 minute read
  • No comments

Building a dynamic instrumentation agent for Java

  • Sylvain
  • September 10, 2019
Sqreen’s Application Security Management platform relies on microagents to leverage the runtime context of applications for security. Our drive when building these agents is to make our protection transparent and…
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  • Dev
  • Python
  • Security
  • 4 minute read
  • 2 comments

Developer security best practices: protecting against timing attacks

  • Boris
  • September 4, 2019
One of the great things about security is that there is always more to learn. When you’re protecting your applications and users, understanding the kinds of attacks bad actors may…
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  • Dev
  • Ruby
  • 7 minute read
  • No comments

Fixing a critical issue: a journey into Ruby web server startup sequences, part two

  • Loic
  • July 29, 2019
So where are we jumping into this story? This post is part two of our story on how we dove into Ruby web server startup sequences to fix a strange…
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  • Dev
  • Ruby
  • 7 minute read
  • No comments

Fixing a critical issue: a journey into Ruby web server startup sequences, part one

  • Loic
  • July 25, 2019
Introduction In this post-mortem blog post we’ll explore the oft-neglected Rack’s design and Ruby web server startup sequence in depth through the lens of a surprising critical issue encountered by…
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  • Dev
  • DevOps
  • 11 minute read
  • No comments

Scaling and improving at Sqreen: a frontend team retrospective

  • Thibaud
  • July 10, 2019
At Sqreen, our company has evolved and changed a lot since we began this journey. Our frontend team is no exception, and as a member of that team, I wanted…
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  • Dev
  • 5 minute read
  • 3 comments

How do you solve a problem like overcrowded company calendars? With a company dashboard!

  • FX
  • June 27, 2019
Why I built a company dashboard from scratch At Sqreen, we have an initiative called “Sqreenities.” A Sqreenity is basically a week where you step away from your normal day-to-day…
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modern app sec teams
  • Dev
  • Security
  • 70 views
  • 10 minute read
  • 3 comments

Getting security to scale: learnings from modern app sec teams

  • Jb
  • June 6, 2019
Why are we writing this? In April, I visited the Bay Area from Paris for a week with some members of my team. While we were there, we sat down…
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  • Dev
  • Python
  • 49 views
  • 6 minute read
  • 4 comments

How we built V8 natively on ARM

  • Émile-Hugo
  • May 9, 2019
When Amazon released their custom Graviton processor, we knew that ARM needed to be on our radar. Although clearly a first generation product, the investment required to build such a…
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  • Dev
  • Sqreen Product
  • 60 views
  • 9 minute read
  • One comment

Building a dynamic instrumentation agent for PHP

  • Jb
  • April 29, 2019
TL;DR PHP instrumentation can be handled in many ways. When we built our PHP agent at Sqreen we made a series of architectural decisions that enabled us to maximize performance,…
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  • Dev
  • Node.js
  • 98 views
  • 5 minute read
  • 2 comments

How to debug memory leaks in a Node.js application on Heroku

  • Vladimir
  • April 18, 2019
Debugging memory leaks is rarely a piece of cake, especially when they only happen in production. The best way I’ve found to debug memory leaks in a Node.js application on…
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