What makes the scam so effective is that as the link appears on an existing conversation thread, it appears to have come from your friend, making it appear more genuine.
Really, the best advice is to be extra careful about ever clicking on a link sent to you, whether it's in an email or via a messenger app like WhatsApp.
If it appears to come from a friend or someone you trust, contact them separately through a different medium if possible, to ensure that it was really them that sent the link.
Fraudsters are targeting users with messages containing genuine-looking links integrated into a current conversation loop. .Users are then asked to register details including name, email, mobile phone number and address, making it easy for scammers to steal this information.This follows reports of a separate piece of malware, also targeting Whatsapp users, that is spread using emails sent from criminals pretending to be from the Californian company.'The message convinces the user to forward the message to 10 contacts, so he/she can receive a certain promotion (such as 5 discount at Starbucks, Zara etc).The mobile messenger has also been used to spread fake invitations to calls and fake voicemail services which contain malware.Here's how it works, and how to protect yourself.Popular app: Whatsapp has exploded in recent years - but users are being warned to stay vigilant as scammers target the app.Whatsapp, which has nearly one billion users worldwide, has seen its popularity explode in recent years.This is Money has asked Whatsapp for a comment, but at the time of publication, the American firm has not come back.You need to be signed in for this feature.David Emm, principal security researcher at Kaspersky Lab, said: 'SMS apps had been the preferred vehicle for mobile spam campaigns, but Whatsapp's prevalence in Europe and India in particular has caught spammers' attention.