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Illustration representing post-quantum cryptography

The PDF industry is preparing for the quantum era by adopting post-quantum cryptography (PQC) standards. Following key developments at PDF Days 2025, vendors are integrating quantum-resistant digital signatures to ensure long-term trust and security in PDF documents.

updf sign

Superace launches its advanced solution for reliable and easy digital signatures to empower users with an efficient and reliable online signing experience.

The PDF Shadow Attacks are a new class of security vulnerabilities for PDF. In case you need a tldr; then rest assured that iText is immune to the published attacks. However, we also found that iText 7 could be utilized to detect potentially malicious documents, resulting in this series of posts.

Are your PDF documents secure, and what should you do to ensure the data they contain is secure? Keeping that data secure is not only a best practice, but is often required by data privacy laws. In this blog and accompanying webinar: “PDF Security: Encryption and Digital Signatures”, we offer you the top three ways to improve your PDF document security.

Breaking glass

On February 25, 2019, researchers from Ruhr University Bochum  and Hackmanit GmbH published pdf-insecurity.org, a detailed explanation of several vulnerabilities they had identified in PDF viewers and online validation services relevant to signature validation in digitally-signed PDF documents. The vulnerabilities are pertinent only to such digitally-signed documents, and not to PDF in general. These vulnerabilities identified change … Read more

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