Digital Footprint: on-line course for children in the Czech Republic

In September this year, the Czech Safer Internet Centre (CZ.NIC), in cooperation with the National Cyber and Information Security Authority, presented an online course called Digital Footprint, intended primarily for children aged 10-13. This interactive game focuses on Internet privacy and associated socio-pathological phenomena such as personal data abuse, sexting, digital privacy or cyberbullying.

Error in DNSSEC implementation on F5 BIG-IP load balancers

During the development of the DNS Knot Resolver, CZ.NIC Labs have managed to reveal a security flaw that makes it possible to bypass DNSSEC security on F5 load balancers and cause denial of service. These products are being used, for example, in some internet banking applications, including those of Czech banks and public authorities. From the perspective of a user attempting to access an internet banking service, a successful attack exploiting this error would manifest in the browser suddenly reporting an “address not found” error and the service becoming unavailable.

We are not afraid to be offline together

The CZ.NIC Association joined the campaign – Family Offline Week with the subtitle “We are not afraid to be offline together“, which will be held this year from May 11 to May 19, 2019. The purpose of the 4th year of the campaign is not only to celebrate the International Family Day, on May 15, but above all to think about the excessive use of digital technology. The uncontrolled use of mobile phones, tablets and computers not only causes health problems but also worsens interpersonal relationships. Children from early age play with tablets and mobiles, often losing social contact with their peers.

Safer Internet Day in the Czech Republic: introducing new project and market unification

The CZ.NIC Association used the Safer Internet Day to introduce its new project, aimed at children´s safety online. The CZ.NIC Association acts as a coordinator of the project that started on 1 January 2019, another partner is the Safety Line, ensuring the operation of a helpline. CZ.NIC will continue operating the Czech national hot-line STOPonline.cz, which received a record number of reports last year.

From the life of an online wanderer

Today, I would like to go back to the topic I brought up in my earlier blog post. At that time, I was horribly angry at the administrators of photo sharing servers. I was angry at the absence of better mechanisms to check the photos people upload. Why don’t they have a person who would take a look at them? Why don’t the make the albums private by default? I could go on, but after almost two years of what seemed like fighting windmills, I have realized one thing. It’s not the administrators’ or providers’ fault — everyone is responsible for their own actions.

Household routers face more than 250 attacks daily

Vulnerability of SOHO routers becomes a topic of analyses by various security organizations almost every week. The 2017 Symantec report shows a year-on-year increase in the number of attacks on IoT devices by 600%. The most vulnerable are unsecured routers, which often make it possible to gain easy access to each connected device. The April’s alert from the official US-CERT also tells us of the growing number of these attacks and their severity.

When it comes to cyber security in high schools, we have a lot to catch up on

There is no doubt that high school students use information and communication technology just as commonly as a toothbrush. Unfortunately, when it comes to security, there is really room for improvement. This was confirmed by the National Final of the second Czech Cyber ​​Security Competition among high schools.

Which MOX is the right one for you?

We launched the campaign for Turris MOX – modular and open source router. As modularity is something new in this field, some users are quite confused and don’t know what should they pick. This article is here to help you a little bit decide which combination is the right one for you and help you understand why would you actually want modularity.

Together for better stability, speed and further extensibility of the DNS ecosystem

Over past years, various DNS software developers tried to solve the problems with the interoperability of the DNS protocol and especially its EDNS extension (RFC 6891 standard), by temporary workarounds, which aimed to lend their software an ability to temporarily accept various non-standard behaviors. Unfortunately, time has shown that this attitude of adding temporary workarounds is not a long-term solution, especially because the implementations not fully complying with standards were seemingly functional and there was no reason for a permanent fix. The result of these makeshift solutions is their accumulation in the DNS software, leading to a situation where there are so many of them that they themselves begin to cause problems. The most obvious problem is slower response to DNS queries and the impossibility to deploy new DNS protocol feature called DNS Cookies, which would help reduce DDoS attacks based on DNS protocol abuse.