New Delhi, July 21 -- A new cyber threat is making its way into Gmail inboxes, and this time it involves Gemini, Google's built-in AI assistant. Security researchers have identified a method where attackers manipulate Gemini into displaying false warnings, tricking users into giving away sensitive information. It is a clever tactic and one that highlights the growing concerns around AI misuse.

At the centre of this scam is a technique known as prompt injection. Attackers are embedding invisible instructions within email messages by using white text and zero font size. These hidden messages are not visible to users but can be read by Gemini when asked to summarise the email content. When the AI reads these prompts, it reacts just as the a...