![A man looks at his cellphone in an underground passageway on February 25 in Kyiv, Ukraine.](https://imagenes.elpais.com/resizer/v2/X4XLDCUU67LR62SI6WBWO7QD4A.jpg?auth=98f5651bdf00decb763b0b1e51f3cdc533a4bdde1c2f633ad0263f6b83adc220&width=414&height=311&focal=4204%2C1548)
From a virtual walkie-talkie to offline maps: The apps that Ukrainians have downloaded since war began
According to research firm Apptopia, last week saw a program that sends airstrike alerts top the download charts in the besieged country
According to research firm Apptopia, last week saw a program that sends airstrike alerts top the download charts in the besieged country
Faced with growing pressure to take action as providers of critical online services, some companies have announced restrictions on Russian state-affiliated media
The viral game has spawned a number of new variations based on everything from mathematics to different languages. Users also have the option of creating their own puzzle
Cybercriminals are blackmailing victims with intimate images, which they obtain via private online chats
Test your knowledge with this quiz taken from questions that appear in the citizenship test
Experts warn that AI systems used by recruiters, banks and even judges learn from data that can contain an undesired bias
The Spanish staff at the monitoring station in Madrid were the first to listen to the astronauts as they landed in 1969
WHO lists the disorder as a mental illness where players lose control over the frequency and duration of games
The boom in instant-translation devices has many translators and interpreters concerned