A good guide will be enough. I just wan't to be able to scrape any video I bump into the Internet.

I know how to get to the div with the video URL but there's some kind of hot-linking protection in the CDN. I'm not sure how to proceed.

I'm interested in doing it from the browser's developer tools, not with external tools if possible (other than specific webdev browser extensions).

This bozo today:

[Tue Jun 12 13:05:23.404628 2018] [proxy:warn] [pid 7382] [client 110.141.221.58:38766] AH01144: No protocol handler was valid for the URL http://66.135.33.212:80/phpmyadmin/. If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule.

I could spend the next 40 hours hardening and not get any fucking productive work done. Fuck these motherfuckers.

Jun 12 13:01:45 verioddd kernel: [86111.516490] [UFW BLOCK] IN=eth0 OUT= MAC=54:9f:35:05:fb:36:80:71:1f:8f:ff:f0:08:00 SRC=119.184.125.74 DST=66.135.33.212 LEN=40 TOS=0x00 PREC=0x00 TTL=109 ID=256 PROTO=TCP SPT=6000 DPT=3030 WINDOW=16384 RES=0x00 SYN URGP=0 
Jun 12 13:02:39 verioddd kernel: [86165.827734] [UFW BLOCK] IN=eth0 OUT= MAC=54:9f:35:05:fb:36:80:71:1f:8f:ff:f0:08:00 SRC=181.214.87.34 DST=66.135.33.212 LEN=40 TOS=0x00 PREC=0x00 TTL=241 ID=60047 PROTO=TCP SPT=42164 DPT=3956 WINDOW=1024 RES=0x00 SYN URGP=0 
Jun 12 13:02:43 verioddd kernel: [86169.567902] [UFW BLOCK] IN=eth0 OUT= MAC=54:9f:35:05:fb:36:80:71:1f:84:0f:f0:08:00 SRC=196.52.43.84 DST=66.135.33.212 LEN=40 TOS=0x00 PREC=0x00 TTL=242 ID=39162 PROTO=TCP SPT=6666 DPT=21 WINDOW=1024 RES=0x00 SYN URGP=0 
Jun 12 13:03:28 verioddd kernel: [86214.219077] [UFW BLOCK] IN=eth0 OUT= MAC=54:9f:35:05:fb:36:80:71:1f:84:0f:f0:08:00 SRC=45.55.2.34 DST=66.135.33.212 LEN=40 TOS=0x00 PREC=0x00 TTL=248 ID=54321 PROTO=TCP SPT=43859 DPT=123 WINDOW=65535 RES=0x00 SYN URGP=0 
Jun 12 13:03:36 verioddd kernel: [86222.321004] [UFW BLOCK] IN=eth0 OUT= MAC=54:9f:35:05:fb:36:80:71:1f:8f:ff:f0:08:00 SRC=77.72.85.17 DST=66.135.33.212 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=62423 PROTO=TCP SPT=58696 DPT=2814 WINDOW=1024 RES=0x00 SYN URGP=0 
Jun 12 13:05:07 verioddd kernel: [86313.436985] [UFW BLOCK] IN=eth0 OUT= MAC=54:9f:35:05:fb:36:80:71:1f:8f:ff:f0:08:00 SRC=111.67.198.59 DST=66.135.33.212 LEN=40 TOS=0x00 PREC=0x00 TTL=241 ID=45538 PROTO=TCP SPT=43287 DPT=1433 WINDOW=1024 RES=0x00 SYN URGP=0 
Jun 12 13:05:35 verioddd kernel: [86341.748677] [UFW BLOCK] IN=eth0 OUT= MAC=54:9f:35:05:fb:36:80:71:1f:8f:ff:f0:08:00 SRC=46.161.27.254 DST=66.135.33.212 LEN=40 TOS=0x00 PREC=0x00 TTL=247 ID=64891 PROTO=TCP SPT=56306 DPT=5800 WINDOW=1024 RES=0x00 SYN URGP=0 
Jun 12 13:06:28 verioddd kernel: [86394.608047] [UFW BLOCK] IN=eth0 OUT= MAC=54:9f:35:05:fb:36:80:71:1f:8f:ff:f0:08:00 SRC=181.214.87.75 DST=66.135.33.212 LEN=40 TOS=0x00 PREC=0x00 TTL=241 ID=48746 PROTO=TCP SPT=45875 DPT=3390 WINDOW=1024 RES=0x00 SYN URGP=0 
Jun 12 13:08:04 verioddd kernel: [86490.452943] [UFW BLOCK] IN=eth0 OUT= MAC=54:9f:35:05:fb:36:80:71:1f:8f:ff:f0:08:00 SRC=185.222.211.102 DST=66.135.33.212 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=29508 PROTO=TCP SPT=51168 DPT=4142 WINDOW=1024 RES=0x00 SYN URGP=0 
Jun 12 13:08:36 verioddd kernel: [86522.514982] [UFW BLOCK] IN=eth0 OUT= MAC=54:9f:35:05:fb:36:80:71:1f:84:0f:f0:08:00 SRC=196.52.43.59 DST=66.135.33.212 LEN=40 TOS=0x00 PREC=0x00 TTL=242 ID=54321 PROTO=TCP SPT=10397 DPT=3389 WINDOW=65535 RES=0x00 SYN URGP=0 

" Permission denied to access property "target" https://hangouts.google.com/webchat/u/0/blank:59"

Looks like some kind of exploit through Google contacts?

This same JS exploit detector has been installed for months, this is new.