LONDON :London department store Harrods said on Thursday hackers had attempted to break into its systems, the third high-profile cyber attack on a UK retailer in two weeks, following incidents at Marks & Spencer and the Co-op Group. British companies, public bodies and institutions have been hit by a wave of cyber attacks in recent years, costing them tens of millions of pounds and often months of disruption. "We recently experienced attempts to gain unauthorised access to some of our systems,"