Author Archives: Marcel-Jan Krijgsman

About Marcel-Jan Krijgsman

Marcel-Jan is de PR-functionaris van de Werkgroep Maan en Planeten. Hij verzorgt ook het nieuws op de Facebook pagina en deze blog.

My new blog

I will start blogging about my new career as data engineer on a new place: http://marcel-jan.eu/datablog/2017/02/21/welcome-to-my-new-blog/ On this blog I intend to take you with me on a journey through Big Data. That’s why the blog is called “Expedition Data”.

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A couple of Enterprise Manager 12 repository scripts

For almost 2 years I’ve been product responsible/product owner for Oracle Enterprise Manager at Rabobank. I haven’t done a lot of technical stuff, but I did have access to the repository. This allowed me to create some queries, create some … Continue reading

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Why I ♥ Python

I had a few encounters with Python before I followed the Introduction to Interactive Python programming courses of Rice University via Coursera. I remember the struggles when I tried to program Twitter feed analysis code with Python on the Introduction … Continue reading

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A Big (Data) Change

So it has been rather quiet on this blog and there’s a good reason for that. I like to blog mostly about interesting (technical) stuff I found out. At work I haven’t done many technical things. I talked about technical … Continue reading

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Making better team decisions

In the first months in my new role as product responsible I had more or less weekly meetings with the team responsible for Enterprise Manager and in those meetings we made decisions sometimes. But what happened was that a few … Continue reading

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The Department of Hacking Other Departments

We operations people often are rather charmed by Netflix’ idea of Chaos Monkey. This is a tool that identifies a group of systems and randomly terminates one system in that group. If you’ve never heard of Chaos Monkey, you might … Continue reading

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NMap 7 is out

Yesterday I read that there is a totally new release of nmap, the network mapping tool. I’ve blogged about Nmap before. Version 7 has attacks against Heartbleed, it has mature IPv6 support, faster scans on Windows and BSD systems. And … Continue reading

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My new role as “product responsible”

For nearly 6 months now I do something different than just technical work. I am currently – what they call at Rabobank – “Product Verantwoordelijke”. In English it sounds a bit weird: “product responsible”, or “responsible for the product”. And … Continue reading

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Exploiting an Oracle database with Metasploit (Part 2)

Continuing from Exploiting an Oracle database with Metasploit (Part 1). Here’s the next set of Metasploit exploits and scanners I’ve tried and tested. auxiliary/scanner/oracle/tnspoison_checker This one just checks if your database is vulnerable to TNS poisoning: msf auxiliary(tnspoison_checker) > info … Continue reading

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Exploiting an Oracle database with Metasploit (Part 1)

Now that I have a Metasploit and Oracle demo environment, it is time to see what I can use to exploit an Oracle 11g Release 2 database. I have to tell you, most of the exploits are actually rather old. … Continue reading

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