What is WhatsApp's new 'strict' mode? Irish people told to be aware of new feature

Irish smartphone users are being told of a new WhatsApp feature as parent company Meta aims to reduce the incidence of scams on their platforms.

Many people are being hit with unexpected calls, links, and files from numbers they do not know on WhatsApp directly, not rather than old school “virus” attacks.

Meta has begun introducing a new WhatsApp feature, known as Strict Account Settings, designed to reduce exposure to scams, impersonation attempts and social engineering. When enabled, the setting automatically blocks media and attachments from unknown senders, silences calls from unknown numbers, disables link previews and limits messages from contacts who are not saved.

George Foley, security spokesperson for ESET Ireland, said the move is significant because it targets how most attacks now begin.

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“Cyberattacks today rarely start with malware. They start with a message. A missed call, a link, a file, or a conversation designed to lower your guard. By blocking unknown contacts and tightening access by default, WhatsApp is addressing the reality of how people are being targeted,” he said.

Foley said the change also highlights the trade-off between convenience and security.

“Instant reachability has become normal, but it is also one of the biggest weaknesses in our digital lives. These new settings will not suit everyone, but they are a clear reminder that convenience often comes at a security cost. Platforms are finally starting to step in earlier, before damage is done, rather than after,” he said.

ESET Ireland said features like this are particularly important for journalists, public figures and anyone whose phone number is widely shared, but they also offer protection for everyday users who are increasingly exposed to scams through messaging apps.

The company advises users to review their privacy and security settings across all messaging platforms, be cautious of unexpected messages or calls, and avoid opening links or attachments from unknown senders, even when they appear harmless.

For more information visit www.eset.com.