PCR Test for SARS-CoV-2

What's it like?

Due to an order from the Chief Medical Officer of the Ministry of Defence, I had to take a PCR test for COVID-19 before starting my military exercise. All my important personal details are stored in ISIN (Infectious Disease Information System) — I just had to register by phone.

T...

19th Jun 2020

Not All Drills Are Equal

Stone vs. concrete

After moving in, we wanted to get settled, which meant drilling a few holes for wall plugs. Drilling in an unfamiliar flat is always a lottery — you never know what's under the plaster. I have a Bosch impact cordless drill that comes supplied with what look like masonry bits. Or...

12th Jun 2020

Online Teaching

The pandemic brought online learning to a much wider audience

Online learning is nothing new for me — I take courses from time to time. But during the crisis there was no alternative to online teaching, whether for school or continuing education. I got to experience it from both sides — as an inst...

15th May 2020

Zoom

Everyone is panicking and banning it... why?

Bad reputation

Like all applications (Webex, Skype, etc.) Zoom also has bugs, which it's now scrambling to fix as fast as possible — see the plan published on their blog.

Facebook data sharing

This issue has already been resolved and only affected...

30th Apr 2020

SANS NetWars

Why NetWars are so great

Over the course of a month I had the chance to take part in four different NetWars (DFIR, ICS, Cyber Defense, and Core). Each one focuses primarily on something different, but they all have one thing in common — they develop knowledge and practical skills. Under pressure (...

25th Apr 2020

Ubiquiti UniFi Dream Machine

Or: goodbye Turris

Given that online learning was coming up, I finally tackled something I'd been putting off — a factory reset of my Turris router. Why? Well, after one update I couldn't manage the router through the UI. I kept seeing Bad gateway. After reboots, endless updates and tweaking a...

8th Apr 2020
What the e-babis.cz Domain Tells Us

What the e-babis.cz Domain Tells Us

DNS is a good source

In the Prime Minister's Sunday address (5 April 2020) someone noticed the back of the paper he was reading from. There was an email addressed to him, subsequently forwarded to a third party (working for the company Imoba). I was curious about which email domain the Prime Minis...

7th Apr 2020

Internet Security Talk

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 series, published every Monday on Root

News from the national team CSIRT.CZ...

1st Feb 2020

2019

2019 in review

What were the highlights of this year?

Film: Chernobyl (TV series)

HW: RPi4 — not a dramatic difference from the 3B+, but every bit counts.

Podcast: Vinohradská 12, the news podcast from Czech Radio

Lens: Sigma 85 f/1.4 Art — breathtaking bokeh

Photography: J., p...

31st Dec 2019