Patrik Žák, Autor na Sysnetshield

About Patrik Žák

Patrik Žák je kyberbezpečnostní konzultant a zakladatel SYSNETSHIELD. Specializuje se na penetrační testy infrastruktury a red teaming. Publikuje týdenní newsletter Security Sunday. Pomáhá firmám bezpečně škálovat infrastrukturu a zavádět automatizaci (Ansible, Docker, AWS).

Cryptominers attack misconfigured Apache Hadoop
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Cryptominers attack misconfigured Apache Hadoop

By Patrik Žák|2024-01-13T19:23:57+00:00January 14th, 2024|Security Sunday|

Welcome to Security Sunday - Week 2. our weekly summary from the world of cybersecurity (08. 01. - 14. 01. 2024). We're collecting notable [...]

Windows Hello can be bypassed without entering a password
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Windows Hello can be bypassed without entering a password

By Patrik Žák|2023-11-28T13:58:16+00:00November 26th, 2023|Security Sunday|

Welcome to Security Sunday - Week 47. our weekly summary from the world of cybersecurity (20. 11. - 26. 11. 2023). We're collecting notable [...]

Denmark’s infrastructure faces largest cyber attack in history
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Denmark’s infrastructure faces largest cyber attack in history

By Patrik Žák|2023-11-19T16:23:29+00:00November 19th, 2023|Security Sunday|

Welcome to Security Sunday - Week 46. our weekly summary from the world of cybersecurity (13 November - 19 November 2023). We're collecting notable [...]

Cloudflare and OpenAI hit by DDoS attack
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Cloudflare and OpenAI hit by DDoS attack

By Patrik Žák|2023-11-12T11:29:03+00:00November 12th, 2023|Security Sunday|

Welcome to Security Sunday - Week 45. our weekly summary from the world of cybersecurity (6. 11. - 12. 11. 2023). We're collecting notable [...]

Boeing confirms cyber attack
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Boeing confirms cyber attack

By Patrik Žák|2025-08-04T19:42:19+00:00November 5th, 2023|Security Sunday|

Welcome to Security Sunday - Week 44. our weekly summary from the world of cybersecurity (30 October - 5 November 2023). We're collecting notable [...]

Samsung Galaxy S23 hacked four times in four days
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Samsung Galaxy S23 hacked four times in four days

By Patrik Žák|2025-08-04T19:41:12+00:00October 29th, 2023|Security Sunday|

Welcome to Security Sunday - Week 43. our weekly summary from the world of cybersecurity (23 October - 29 October 2023). We're collecting notable [...]

More than 40,000 Cisco IOS devices infected with backdoor
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More than 40,000 Cisco IOS devices infected with backdoor

By Patrik Žák|2025-08-04T19:41:50+00:00October 22nd, 2023|Security Sunday|

Welcome to Security Sunday - Week 42. our weekly summary from the world of cybersecurity (16 October - 22 October 2023). We're collecting notable [...]

Google, Cloudflare and AWS reported the largest DDoS attack in history
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Google, Cloudflare and AWS reported the largest DDoS attack in history

By Patrik Žák|2025-08-04T19:43:06+00:00October 15th, 2023|Security Sunday|

Welcome to Security Sunday - Week 41. our weekly summary from the Cybersecurity September (9 October - 15 October 2023). We're collecting notable incident [...]

Active exploitation of critical Zero-Day vulnerability in Confluence | Security Sunday w40/2023
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Active exploitation of critical Zero-Day vulnerability in Confluence | Security Sunday w40/2023

By Patrik Žák|2025-08-04T19:42:41+00:00October 8th, 2023|Security Sunday|

Welcome to Security Sunday - Week 40. our weekly IT security summary (2 October - 8 October 2023). We're collecting notable incident and vulnerability [...]

The University of Defense was attacked by hackers. 750 GB of staff and teacher data was leaked, including financial statements.
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The University of Defense was attacked by hackers. 750 GB of staff and teacher data was leaked, including financial statements.

By Patrik Žák|2023-10-01T07:27:30+00:00October 1st, 2023|Security Sunday|

Welcome to Security Sunday - Week 39, our weekly recap of IT security (September 25 - October 1, 2023). We're collecting notable incident and [...]