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@@ -19,7 +19,7 @@ And voila, the innocent guest managed to infiltrate your company network, and ca
 
 The HDMI firewall blocks all additional interfaces, and only allows audio and video data transfer.
 It is based on the research of Pierre-Michel Ricordel and José Lopes Esteves from ANSSI/SDE/ST/LSF presented at the IT security conference [SSTIC 2021](https://sstic.org/2021/presentation/un_pare_feu_pour_le_hdmi/).
-Some security research and vulnerabilities around CEC and EDID are listed in the [slides](https://www.sstic.org/media/SSTIC2021/SSTIC-actes/un_pare_feu_pour_le_hdmi/SSTIC2021-Slides-un_pare_feu_pour_le_hdmi-lopes-esteves_ricordel.pdf).
+Some security research and vulnerabilities around CEC and EDID are listed in [slide 4](https://www.sstic.org/media/SSTIC2021/SSTIC-actes/un_pare_feu_pour_le_hdmi/SSTIC2021-Slides-un_pare_feu_pour_le_hdmi-lopes-esteves_ricordel.pdf).
 
 
 usage