Bozho's tech blog

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Creating a CentOS Startup Screen

Bozho November 25, 2020

When distributing bundled software, you have multiple options, but if we exclude fancy newcomers like Docker and Kubernetes, you’re left with the following options: an installer (for Windows), a packageContinue reading

Let’s Kill Security Questions

Bozho November 20, 2020

Security questions still exist. They are less dominant now, but we haven’t yet condemned them as an industry hard enough so that they stop being added to authentication flows. ButContinue reading

My Advice To Developers About Working With Databases: Make It Secure

Bozho November 3, 2020

Last month Ben Brumm asked me for the one advice I’d like to give to developers that are working with databases (in reality – almost all of us). He publishedContinue reading

Discovering an OSSEC/Wazuh Encryption Issue

Bozho October 12, 2020

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

Bozho October 10, 2020

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

Bozho September 28, 2020

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?

Bozho September 24, 2020

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

Bozho August 27, 2020

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

Bozho August 18, 2020

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]

Bozho July 30, 2020

“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

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LogSentinel – a next-gen SIEM

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