If you like this concept you can choose one of my Ready-made services: https://99designs.com/profiles/valmark/services.

I will customize and polish colors, typography, and layout to fit best on your service.

The non-exclusive license is $108, Exclusive license is $432. If you chose an exclusive license I will remove it from further offers.

Arsen is an anti-phishing solution that enables enterprises to prevent, detect and mitigate phishing attacks by using a combination of dedicated cybersecurity training, advanced phishing simulation, and machine learning technologies.

Because the given name Arsen and the client are from France, my idea was Arsène Lupin which was a fictional gentleman thief and master of disguise. Phishing attacks have similar characteristic :)
The icon was created subtly by the shield (security), cylinder hat and monocle (Arsène Lupin).
Would I change something? The answer is NO :)

Thanks