FILE PHOTO: A logo of WhatsApp is pictured on a T-shirt worn by a WhatsApp-Reliance Jio representative during a drive by the two companies to educate users, on the outskirts of Kolkata, India, October 9, 2018. REUTERS/Rupak De Chowdhuri –

JERUSALEM (Reuters) – Facebook’s WhatsApp on Tuesday urged users to upgrade to the latest version of its popular messaging app following a report that users could be vulnerable to having malicious spyware installed on phones without their knowledge.

“WhatsApp encourages people to upgrade to the latest version of our app, as well as keep their mobile operating system up to date, to protect against potential targeted exploits designed to compromise information stored on mobile devices,” a spokesman said.

“We are constantly working alongside industry partners to