Translation guide
A computer virus is a type of malicious software that replicates itself and spreads to other computers. In Japanese, the most common term is コンピューターウイルス, often shortened to ウイルス in context. This guide covers how to talk about computer viruses naturally in Japanese.
computer virus
virus (short)
Referring to a computer virus in general, such as in news, tech support, or casual conversation.
The standard term for 'computer virus'. It is a loanword from English and widely understood.
My computer got infected with a virus.
Short for コンピューターウイルス. In context, it's clear you mean a computer virus, not a biological one.
A broader term for 'malware', which includes viruses. Often used in technical contexts.
Talking about a computer getting a virus or a virus spreading.
Discussing antivirus software, scanning, and protection measures.
Referring to specific kinds of computer viruses.
Trojan horse. A type of malware disguised as legitimate software.
That file was a Trojan horse.
Worm. A standalone malware that replicates itself to spread to other computers.
Ransomware. Malware that encrypts files and demands payment.
In Japanese, ウイルス can mean both biological and computer viruses. Usually, the context makes it clear. If you need to be explicit, use コンピューターウイルス.
ウイルス対策ソフトを入れていますか？
Do you have antivirus software installed?
Recent malware has become more sophisticated.
A worm spread through the company network.
I got infected with ransomware and can't open my files.