What's the best logo for the Implicit Flow Detector?

Technology

There's a security standard called OAuth. It's a way to delegate authorization to third-party sites. BUT, OAuth was created back in 2007. It includes a security flow called the Implicit Flow. This flow was deprecated last year. There are alternative ways to accomplish what the implicit flow accomplishes that are still within the standard. The Implicit Flow Detector browser extension alerts users to sites still using this deprecated and insecure flow.

I’m interested in abstract logos. I'd like it to match another logo of our for a browser extension called PassProtect. I am looking for the same shield logo, but with a has symbol: # inside rather than the stylized P. (the # represents a placeholder in the implicit flow)

Every design category has flexible pricing for all budgets. Logo design starts at $299.