What I'm worried, first, is about security. Is there a way those programs might be scams, or any other way to hurt me financially?
It could be a scam if you are using some new unknown or fake exchange that pretends to run one of this programs and imitate look and feel of binance or coinbase.
On legit exchange it is unlikely that this could be connected with scam, BUT your data and email could be sold to any third party and you could in receive some spam messages in future.
Same thing could happen if exchange get hacked resulting in leaks of customer information.
It's good if you can learn something with this programs, but don't expect to actually earn more than a few bucks from them.