virus // noun [C]

(IT )

instructions that are hidden inside a computer program and are designed to cause faults or destroy data:

The virus wiped everything off my hard disk.

The software can detect over 500 different viruses.

anti-virus software/virus detection software

All attachments are scanned for viruses before they can be opened.

a computer/software virus

◆ a virus alert/attack to detect/import/spot/spread a virus

• bear
• bearer
• bear hug
• bearish
• bear market
• bear position
• bear raid
• bear run
• beat
• beauty parade
• bed and breakfast
• beef
• beeper
• beginning of year
• behavioural competency
• behemoth
• Beige Book
• beleaguered
• bell
• bell curve
• bells and whistles
• bellwether
• belly
• below par
• below the fold