SECURITY Signal 80

Microsoft's prompt injection detector catches phishing campaign exploiting text-reading gap

The New Stack 2 weeks ago 24 min read ↗ Original

Microsoft's prompt injection detector, built to catch prompt injection attacks, instead flagged a phishing campaign that exploits a gap in how machines read text, with attackers slipping invisible text.

WHY IT MATTERS

This shows that a security tool designed for one threat can inadvertently catch another, but it also reveals a gap in how machines parse text. Engineers should consider how invisible text can bypass filters and ensure their own text processing handles such cases.

Written by elseif from the cluster below · every claim links back to a source

The three things worth knowing

Microsoft's prompt injection detector flagged a phishing campaign last week.

The campaign exploits a gap in how machines read text.

Attackers are slipping invisible text to evade detection.

THE CLUSTER

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The New Stack Microsoft built a prompt injection detector. Then it caught a phishing campaign instead. 2 weeks Open ↗