KUALA LUMPUR, Nov 9 — A message arrives offering an investment opportunity that sounds too good to miss.

The recipient is directed to a website or online group where supposed investors share screenshots of their profits and testimonials about how much they have earned.

Convinced that the opportunity is legitimate, the recipient is asked to register, transfer money into a bank account and act quickly before the offer closes.

Such scams are among the online threats that can catch people off guard, often relying on convincing messages, fabricated testimonials and pressure to make quick decisions.