Run Google Chrome and Chromium complete from RAM so that it doesn't leave any trace of cache or any browing related data on the Hard Disk. For this you need at least 4GB of free RAM.
sudo nano /etc/fstab
tmpfs /media/ramdisk tmpfs defaults,nodev,nosuid,noatime,mode=1777 0 0
save and exit.
sudo mkdir /media/ramdisk
sudo nano ~/.chromecache
#!/bin/sh
USER=xer0conf
#for caching google chrome stable
/bin/rm -r -f /home/$USER/.cache/google-chrome
/bin/mkdir /media/ramdisk
/usr/bin/chown -R $USER:$USER /media/ramdisk
#for Cache
/bin/mkdir /media/ramdisk/chromeCacheStable
/usr/bin/chown -R $USER:$USER /media/ramdisk/chromeCacheStable
/bin/ln -s /media/ramdisk/chromeCacheStable /home/$USER/.cache/google-chrome
/usr/bin/chown -R $USER:$USER /home/$USER/.cache/google-chrome
#for Config, bookmarks, downloads etc
/bin/rm -r -f /home/$USSER/.config/google-chrome
/bin/mkdir /media/ramdisk/chromeConfigStable
/usr/bin/chown -R $USER:$USER /media/ramdisk/chromeConfigStable
/bin/ln -s /media/ramdisk/chromeConfigStable /home/$USER/.config/google-chrome
/usr/bin/chown -R $USER:$USER /home/$USER/.config/google-chrome
#for caching google chrome unstable
/bin/rm -r -f /home/$USER/.cache/google-chrome-unstable
#for cache
/bin/mkdir /media/ramdisk/chromeCacheUnstable
/usr/bin/chown -R $USER:$USER /media/ramdisk/chromeCacheUnstable
/bin/ln -s /media/ramdisk/chromeCacheUnstable /home/$USER/.cache/google-chrome-unstable
/usr/bin/chown -R $USER:$USER /home/$USER/.cache/google-chrome-unstable
#for config, bookmarks, download etc
/bin/rm -r -f /home/$USER/.config/google-chrome-unstable
/bin/mkdir /media/ramdisk/chromeConfigUnstable
/usr/bin/chown -R $USER:$USER /media/ramdisk/chromeConfigUnstable
/bin/ln -s /media/ramdisk/chromeConfigUnstable /home/$USER/.config/google-chrome-unstable
/usr/bin/chown -R $USER:$USER /home/$USER/.config/google-chrome-unstable
#for the chromium cache
/bin/rm -r -f /home/$USER/.cache/chromium
#for cache
/bin/mkdir /media/ramdisk/chromiumCache
/usr/bin/chown -R $USER:$USER /media/ramdisk/chromiumCache
/bin/ln -s /media/ramdisk/chromiumCache /home/$USER/.cache/chromium
/usr/bin/chown -R $USER:$USER /home/$USER/.cache/chromium
#for config, bookmarks, download etc
/bin/rm -r -f /home/$USER/.config/chromium
/bin/mkdir /media/ramdisk/chromiumConfig
/usr/bin/chown -R $USER:$USER /media/ramdisk/chromiumConfig
/bin/ln -s /media/ramdisk/chromiumConfig /home/$USER/.config/chromium
/usr/bin/chown -R $USER:$USER /home/$USER/.config/chromium
#for the snap chromium cache
/bin/rm -r -f /home/$USER/snap/chromium/common/.cache
#for cache
/bin/mkdir /media/ramdisk/chromiumSnapCache
/usr/bin/chown -R $USER:$USER /media/ramdisk/chromiumSnapCache
/bin/ln -s /media/ramdisk/chromiumSnapCache /home/$USER/snap/chromium/common/.cache
/usr/bin/chown -R $USER:$USER /home/$USER/snap/chromium/common/.cache
#for config, bookmarks, download etc
/bin/rm -r -f /home/$USER/snap/chromium/common/chromium
/bin/mkdir /media/ramdisk/chromiumSnapConfig
/usr/bin/chown -R $USER:$USER /media/ramdisk/chromiumSnapConfig
/bin/ln -s /media/ramdisk/chromiumSnapConfig /home/$USER/snap/chromium/common/chromium
/usr/bin/chown -R $USER:$USER /home/$USER/snap/chromium/common/chromium
save and exit.
sudo chmod +x ~/.chromecache
Add the script to system startup app
sudo nano /etc/rc.local
/home/xer0conf/.chromecache
exit 0
save and exit
sudo chmod +x /etc/rc.local
Source: https://www.squash.io/executing-bash-script-at-startup-in-ubuntu-linux/