WPP suffers 'cyber attack'

WPP has been subject to an apparent global cyber attack with reports of systems crashing and ransom demands.
Several of WPP’s agencies including GroupM, MediaCom, JWT and Y&R are thought to be affected by the attack, which began this afternoon (27 June). 
Mary Heather, senior director at WPP-owned agency Burson-Marsteller, confirmed the attack on Twitter saying the agency had “no access to technology”.
In an email sent to WPP agencies, seen by The Drum, staff