The ZeroFont phishing technique exploits flaws in AI and natural language processing systems to insert hidden words or characters in emails, evading security filters and tricking recipients.

New ZeroFont Phishing Tricks Outlook Into Showing Fake AV-Scans

Hackers have started using a new technique called ZeroFont in phishing emails to trick users into thinking the emails have been scanned by security tools in Microsoft Outlook. ZeroFont involves using invisible text to evade security filters and make the emails appear legitimate. The technique manipulates message previews in Outlook to display a different message in the email list than in the preview pane. This creates a false sense of security and increases the chances of the recipient opening the email and engaging with its content. Users of other email clients should also be vigilant as this technique may be used in other software as well.

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