---
title: 'Last Day'
url: 'https://www.ondrejsramek.cz/en/blog/posledni-den'
markdown: 'https://www.ondrejsramek.cz/en/blog/posledni-den.md'
lang: en
date: '2023-10-31'
description: "at the Big Four Two years and seven months. That's how long I lasted. In that time I experienced a Supply Chain Attack (Kaseya) and got up at two in the morning. Found out the customer was lucky — saved by an antivirus with a fairly simple but effective rule. Handled several ransomware attacks (Dar…"
taxonomy:
  tag:
    - security
    - PwC
  category:
    - 'informační technologie'
    - IT
    - práce
    - work
  '':
    - ''
  archives_year:
    - '2023'
---

# at the Big Four

Two years and seven months. That's how long I lasted. In that time I experienced a Supply Chain Attack (Kaseya) and got up at two in the morning. Found out the customer was lucky — saved by an antivirus with a fairly simple but effective rule. Handled several ransomware attacks (Dark Side, Conti, and LockBit) — on weekends and through the night. As far as I know none of the affected organisations made the press, so we did our job well. I was part of the Czech team that finished 3rd at Locked Shields. I spoke at several conferences and universities. Gave a few interviews to newspapers (Deník N and HN), and was invited onto several podcasts.

Thanks for the opportunity.

 [ Previous Post](https://www.ondrejsramek.cz/en/blog/festival-bezpecneho-internetu) [Next Post ](https://www.ondrejsramek.cz/en/blog/2023) 

#### Other Related Posts:

 [  bezpečnost  ](https://www.ondrejsramek.cz/en/blog/tag:bezpe%C4%8Dnost#blog_list) 

###  Internet Security Talk 

[Internet Security Talk](https://www.ondrejsramek.cz/en/blog/bezpecne-online)

# In my hometown

Just as the internet changes every day, online security has to keep up. Below you'll find a few links to useful resources on internet security and privacy.

### Current security news

The [Security Roundup](https://www.root.cz/serialy/postrehy-z-bezpecnosti/) series, published every Monday on Root

News from the national team [CSIRT.CZ](https://www.csirt.cz/news/security/)...

 1st Feb 2020 

 [ ![Elastic Courses](https://www.ondrejsramek.cz/user/pages/05.blog/42.kurzy-od-elastic/Screenshot%202020-07-04%20at%2022.52.26.png) ](https://www.ondrejsramek.cz/en/blog/kurzy-od-elastic) [  ELK  ](https://www.ondrejsramek.cz/en/blog/tag:ELK#blog_list) [  Kibana  ](https://www.ondrejsramek.cz/en/blog/tag:Kibana#blog_list) [  elastic  ](https://www.ondrejsramek.cz/en/blog/tag:elastic#blog_list) [  ML  ](https://www.ondrejsramek.cz/en/blog/tag:ML#blog_list) [  Endgame  ](https://www.ondrejsramek.cz/en/blog/tag:Endgame#blog_list) 

###  Elastic Courses 

[Elastic Courses](https://www.ondrejsramek.cz/en/blog/kurzy-od-elastic)

# Elasticsearch, Logstash, Kibana — and Filebeat and Endgame too

**Elastic** offers a lot of training, some of it free. A while back I completed [Fundamentals of Securing Elasticsearch](https://www.elastic.co/training/fundamentals-of-securing-elasticsearch), a useful course on securing communication between Elasticsearch hosts. I was curious how far Kibana had come and wha...

 5th Jul 2020 

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- English 

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---

## Navigation

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