New image signature can survive cropping, stop deepfakes from hijacking trust

Help Net Security

December 9, 2025 at 6:00 AM

Overview

Researchers at the University of Pisa have developed a new method to maintain image signatures even after cropping, addressing a significant vulnerability in image verification. Current authentication tools often fail when an image is altered, which allows deepfake images to manipulate public opinion, spread misinformation, and impact news cycles. This innovation aims to provide a more reliable way to verify the authenticity of images, making it harder for malicious actors to exploit cropped images for deceptive purposes. The ability to verify images post-cropping could help restore trust in visual media, which is increasingly crucial in today's digital landscape where misinformation can spread rapidly. This development is particularly relevant for journalists, social media platforms, and anyone relying on visual content for information.

Key Takeaways

Timeline: Newly disclosed

Original Article Summary

Deepfake images can distort public debate, fuel harassment, or shift a news cycle before anyone checks the source. A new study from researchers at the University of Pisa examines one specific part of this problem. They introduced a way to keep image signatures intact even after cropping. System model Cropping remains a weak spot in image verification Most authentication tools fail the moment a photo is altered. Even small changes like trimming edges turn a … More → The post New image signature can survive cropping, stop deepfakes from hijacking trust appeared first on Help Net Security.

Impact

Not specified

Exploitation Status

No active exploitation has been reported at this time. However, organizations should still apply patches promptly as proof-of-concept code may exist.

Timeline

Newly disclosed

Remediation

Not specified

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Exploit, Vulnerability.

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