This guide covers Level 3 of Blockchain's Security Center. The Level 2 guide, which covers Two Factor Authentication options, can be found here.
Block Tor Requests
The final level of the Blockchain Security Center allows you to block Tor requests. If you are not familiar with Tor and have no interest in using it, we strongly encourage you to enable this option.
If you are an active Tor user you can access Blockchain.info from Tor via https://blockchainbdgpzk.onion/.
Click Block on the right to finish Level 3.
Congrats! You're all done.
You've now completed all the Security Center steps. To make adjustments to any of these settings, go to Settings -> Security.
Your Security Center should now look like this: