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Perfidy, Deception, Fraud - How Much Trust Should We Put in a PDF? (gpn23) episode artwork

EPISODE · Jun 21, 2025 · 24 MIN

Perfidy, Deception, Fraud - How Much Trust Should We Put in a PDF? (gpn23)

from Chaos Computer Club - recent events feed (high quality) · host vlkl

In our daily life, we often think of PDF documents as static and immutable. This mental model is wrong. In this presentation, we give a brief overview of PDF (in-)security and describe a novel kind of attack where a malicious PDF document can * change its displayed content with time (while the file stays the same) * display different content to different people We publish details and a proof of concept at https://github.com/vlkl-sap/perfidy-deception-fraud Licensed to the public under https://creativecommons.org/licenses/by/4.0/ about this event: https://cfp.gulas.ch/gpn23/talk/G7FMP3/

What this episode covers

In our daily life, we often think of PDF documents as static and immutable. This mental model is wrong. In this presentation, we give a brief overview of PDF (in-)security and describe a novel kind of attack where a malicious PDF document can * change its displayed content with time (while the file stays the same) * display different content to different people We publish details and a proof of concept at https://github.com/vlkl-sap/perfidy-deception-fraud Licensed to the public under https://creativecommons.org/licenses/by/4.0/ about this event: https://cfp.gulas.ch/gpn23/talk/G7FMP3/

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Perfidy, Deception, Fraud - How Much Trust Should We Put in a PDF? (gpn23)

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How long is this episode of Chaos Computer Club - recent events feed (high quality)?

This episode is 24 minutes long.

When was this Chaos Computer Club - recent events feed (high quality) episode published?

This episode was published on June 21, 2025.

What is this episode about?

In our daily life, we often think of PDF documents as static and immutable. This mental model is wrong. In this presentation, we give a brief overview of PDF (in-)security and describe a novel kind of attack where a malicious PDF document can *...

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