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The speaker discusses various security measures to protect against malicious attacks, particularly in PDF files. They highlight the risks associated with opening attachments from unknown sources, (1) Automatic Action, to execute some portion of a PDF without user notification, (2) JBIG decoding method that can hide attacks, on rich media, and (3) Launching tasks or scripts within a PDF.

To counter these threats, the speaker recommends using scripts like Pyon Bas scpt, EAS, PDF ID, and PDF Pars to analyze PDF files for malicious content. These scripts search for specific tags or objects in the PDF to determine if it is malicious.

The speaker also emphasizes the importance of implementing security policies, such as whitelisting trusted applications, restricting access to unknown sources, and setting up strong outbound firewall policies. Additionally, they suggest auditing firewalls from inside to outside to ensure only necessary connections are allowed.

Finally, the speaker thanks G St for providing scripts and guidance on PDF security and invites feedback and suggestions from the audience. They also express interest in diving deeper into reverse engineering and exploit writing, seeking resources and materials to learn more about these topics.