Discovering an OSSEC/Wazuh Encryption Issue
I’m trying to get the Wazuh agent (a fork of OSSEC, one of the most popular open source security tools, used for intrusion detection) to talk to our custom backendContinue reading
OpenSSL Key and IV Padding
OpenSSL is an omnipresent tool when it comes to encryption. While in Java we are used to the native Java implementations of cryptographic primitives, most other languages rely on OpenSSL.Continue reading
ElasticSearch Multitenancy With Routing
Elasticsearch is great, but optimizing it for high load is always tricky. This won’t be yet another “Tips and tricks for optimizing Elasticsearch” article – there are many great onesContinue reading
Is It Really Two-Factor Authentication?
Terminology-wise, there is a clear distinction between two-factor authentication (multi-factor authentication) and two-step verification (authentication), as this article explains. 2FA/MFA is authentication using more than one factors, i.e. “something youContinue reading
Bulk vs Individual Compression
I’d like to share something very brief and very obvious – that compression works better with large amounts of data. That is, if you have to compress 100 sentences you’dContinue reading
Making Sense of the Information Security Landscape
There are hundreds of different information security solutions out there and choosing which one to pick can be hard. Usually decisions are driven by recommendations, vendor familiarity, successful upsells, complianceContinue reading
Encryption Overview [Webinar]
“Encryption” has turned into a buzzword, especially after privacy standards and regulation vaguely mention it and vendors rush to provide “encryption”. But what does it mean in practice? I didContinue reading
Blockchainizing Existing Databases
Blockchain has been a buzzword for the past several years and it hasn’t lived to its promises (yet). The value proposition usually includes vague claims about trust and unmodifiability, butContinue reading
Seven Legacy Integration Patterns
If we have to integrate two (or more) systems nowadays, we know – we either use an API or, more rarely, some message queue. Unfortunately, many systems in the worldContinue reading
Using Multiple Dynamic Caches With Spring
In a third post about cache managers in spring (over a long period of time), I’d like to expand on the previous two by showing how to configure multiple cacheContinue reading