A website is currently using a security service to protect itself from online attacks. This security measure was triggered due to suspicious activity, possibly caused by submitting specific words or phrases, executing SQL commands, or entering malformed data.
If you were on the site when this block occurred, it’s recommended that you contact the site owner and let them know about the issue. They will be able to address the problem and lift the security block.
Source: https://www.theblock.co/post/352031/sec-chair-paul-atkins-signals-sharp-shift-on-digital-assets-in-first-public-remarks-at-crypto-roundtable