Darktrace shares glow as UK cyber group lifts outlook

FILE PHOTO: A lock icon, signifying an encrypted Internet connection, is seen on an Internet Explorer browser in a photo illustration in Paris, France April 15, 2014. REUTERS/Mal Langsdon

LONDON (Reuters) -British cyber security firm Darktrace lifted its full-year revenue and margin guidance on Tuesday after it enjoyed a near 40% jump in customers, driving its shares higher after a recent slump.

Darktrace, which uses artificial intelligence to detect attacks and vulnerabilities inside IT networks rather than building barriers at the perimeter, listed on the stock market in April and has endured a bumpy ride.