insecon Computer Networks and Telecommunications course at Higher School of Economics, 1st-2nd modules. Tasks 1. SSL certificates 1.1. X.509 TODO 1.2. CRL TODO 1.3. OCSP TODO 2. Web application protection using the DVWA example TODO 3. Proxy servers 3.1. Squid basics TODO 3.2. Squid: SNI and HTTPS interception TODO