Researchers have demonstrated a novel class of attacks that could allow a bad actor to potentially circumvent existing countermeasures and break the integrity protection of digitally signed PDF documents. Called "Shadow attacks" by academics from Ruhr-University Bochum, the technique uses the "enormous flexibility provided by the PDF specification so that shadow documents remain
https://thehackernews.com/2021/02/shadow-attacks-let-attackers-replace.html?utm_source=dlvr.it&utm_medium=blogger
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