[Chromebooks] lil chickenz:
Hi guys, I figured this out last year and after finding a forum about bypassing securely on here about it I decided to make a post about it so enjoy :)

Step 1:

Go to https://cdome.comodo.com/shield/ click get it for free, and create an account

When you've finished signing up, go back to https://cdome.comodo.com/shield/# and login (Your username is your email).

Step 2:

When you first login a box should popup onto your screen with a bunch of green text at the bottom of it. If this doesn't happen, on the top right part of your screen there should be a button that says setup wizard in blue. Just click that.

Step 3:

For this step, you will have to be at whatever place you need it blocked at. Make sure your connected to your school or work wifi, then open a new tab and go to https://whatsmyip.com/ and copy the ip it tells you. Close that tab and now paste the numbers into where it says Ipv4 address/ FQDN. Name it whatever you want, then click save, next, and "start using dome shield".

Step 4:

Now in the top left of your screen you should see a button that says configure. Click it. On the left hand side of the screen now, you should see a menu with the option B/W lists under policy settings. Click that, and then click new B/W list in the top right. As usual, give it a name, and click next. For this part, first, make sure blacklist is ticked and not whitelist. Now what you need to do is in the domain name field, add securly.com, press the plus next to where you just typed that, and press create.

Step 5:

Now, using the menu on the right, click add new policy at the top.. Give it a name, and for object select the wifi you named in step three, and click next. What you need to do now it make sure that both switches at the top are moved to the right, and then under domain B/W list tick the one that you made in the last step and then click save. That's all you need to do on the website.

Step 6:

Now all you need to do is open your chromebook settings by clicking your icon on the far right of your shelf, and then clicking the gear icon on the menu that pops up. In the window that pops up, click on wifi, it should be the first option. Select the wifi that you used in the previous steps, and then expand the network tab. Scroll down, and you should see a section labeled name servers. Select custom name servers, and you should now see four lines for text input. In the first one, put 8.26.56.10 and in the second put 8.20.247.10 and you can leave the last two blank.

Step 7:

The last thing you need to do is pretty quick. Just go to chrome://net-internals/#dns and click clear host cache.

Afterward:

Now your done! It may take a few minutes to take effect so be patient. If it doesn't try disconnecting and reconnecting to the wifi and clearing the cache again. Soon though, you should notice that securely doesn't do anything anymore. Pretty much what you have done, is made it so when your Chromebook asks securely if a page needs blocked, securely doesn't respond and your Chromebook assumes its okay. The only problem with this method is that you have to setup each wifi you want things unblocked on, so for every new wifi you want unblocked you need to repeat steps 3 and 5-7. Overall though, I would say this is the best way because your only going to use the Chromebook at whatever place issued it to you and maybe your house so you only really need to do it at most twice. That's all, and if you have any questions or problems please ask and I'll do my best to help :)