Using JWT For Sessions
The topic has been discussed many times, on hacker news, reddit, blogs. And the consensus is – DON’T USE JWT (for user sessions). And I largely agree with the criticismContinue reading
Adding Visible Electronic Signatures To PDFs
I’m aware this is going to be a very niche topic. Electronically signing PDFs is far from a mainstream usecase. However, I’ll write it for two reasons – first, IContinue reading
Integration With Zapier
Integration is boring. And also inevitable. But I won’t be writing about enterprise integration patterns. Instead, I’ll explain how to create an app for integration with Zapier. What is Zapier?Continue reading
GDPR for Developers [presentation]
On a recent meetup in Amsterdam I talked about GDPR from a technical point of view, effectively turning my “GDPR – a practical guide for developers” article into a talk.Continue reading
Fix Your Crawler
Every now and then I open the admin panel of my blog hosting and ban a few IPs (after I’ve tried messaging their abuse email, if I find one). ItContinue reading
OWASP Dependency Check Maven Plugin – a Must-Have
I have to admit with a high degree of shame that I didn’t know about the OWASP dependency check maven plugin. And seems to have been around since 2013. AndContinue reading
Using Trusted Timestamping With Java
Trusted timestamping is the process of having a trusted third party (“Time stamping authority”, TSA) certify the time of a given event in electronic form. The EU regulation eIDAS givesContinue reading
GDPR – A Practical Guide For Developers
You’ve probably heard about GDPR. The new European data protection regulation that applies practically to everyone. Especially if you are working in a big company, it’s most likely that there’sContinue reading
Enabling Two-Factor Authentication For Your Web Application
It’s almost always a good idea to support two-factor authentication (2FA), especially for back-office systems. 2FA comes in many different forms, some of which include SMS, TOTP, or even hardwareContinue reading
Setting Up Cassandra Cluster in AWS
Apache Cassandra is a NoSQL database that allows for easy horizontal scaling, using the consistent hashing mechanism. Seven years ago I tried it and decided not use it for aContinue reading