add privacy talk

slides/privacy/desc.txt

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+In this talk we analyze the current state of privacy in popular chat apps and systems, as well as survaliance infrastruture in Serbia as of 2026.

slides/privacy/privacy.md

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+# DIGITAL PRIVACY
+
+![Image](slides/surveillancerequired/1.jpeg)
+
+# Introduction
+
+- dmz.rs
+- xecut
+- talks and workshops
+- direct democracy
+
+
+# Police
+
+- SIM cards need ID now
+- VTK
+- Relationship with social media companies
+- Hard to enforce without your cooperation
+
+# Survaliance infrastruture
+
+- Cameras (Goverment, public transport, private)
+- Mobile Towers
+- Spy vans
+
+# Apps
+
+- Viber, Whatsup
+- Telegram, Signal
+- All need phone numbers!
+- Conversations
+
+
+# Systems
+
+- Andorid
+- IOS
+- Windows
+- MacOS
+- Linux
+
+# Networks
+
+- Server vs P2P
+- Torrent
+- ISP and VPNs
+- Tor and I2P