Adobe issues emergency fix for Acrobat Reader flaw exploited in the wild (CVE-2026-34621) 2026-04-13 at 13:22 By Zeljka Zorz Adobe has pushed out an emergency security update for Adobe Acrobat Reader, patching a zero-day vulnerability (CVE-2026-34621) exploited in the wild since November 2025. About CVE-2026-34621 CVE-2026-34621 is a critical prototype pollution vulnerability – a type […]
Acrobat Reader zero-day exploited in the wild for many months 2026-04-09 at 15:44 By Zeljka Zorz Unknown attackers have exploited a zero-day Adobe Acrobat Reader vulnerability since November 2025 and possibly even earlier, security researcher Haifei Li has discovered. PDF files carry the exploit Haifei Li is one of the creators of EXPMON, a sandbox-based
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New technique detects tampering or forgery of a PDF document 2025-07-07 at 07:37 By Sinisa Markovic Researchers from the University of Pretoria presented a new technique for detecting tampering in PDF documents by analyzing the file’s page objects. The technique employs a prototype that can detect changes to a PDF document, such as changes made
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How attackers deliver malware to Foxit PDF Reader users 2024-05-15 at 16:31 By Zeljka Zorz Threat actors are taking advantage of the flawed design of Foxit PDF Reader’s alerts to deliver malware via booby-trapped PDF documents, Check Point researchers have warned. Exploiting the issue The researchers have analyzed several campaigns using malicious PDF files that
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The misconceptions preventing wider adoption of digital signatures 05/09/2023 at 07:33 By Mirko Zorz In this Help Net Security interview, Thorsten Hau, CEO at fidentity, discusses the legal validity of qualified digital signatures, demonstrating their equivalence to handwritten signatures when backed by robust identity verification. Opting for certified providers that adhere to standards like eIDAS
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