They may provide a good service in that regard but they're no angel of the network when it comes to personal privacy. IE already has a download manager. Why would ADM be necessary?
I am not saying it is automatically a good thing, nor am I capable to answer why Microsoft, TechNet, MSDN, Adobe and numerous others have decided to use Akamai Downloader in delivering their stuff.
What I tried to say in between the lines is that sometimes this security hype gets too far. Please do not misunderstand me, security is nothing to play carelessly with, but for instance in this OP's case I believe there's nothing wrong, no reason to panic. Nobody has cracked his router's and Windows' firewalls to steal his credit card information.
Yet, the combined forces of Seven Forums "run to rescue", to solve a non-issue.
Some background: If you allow cookies and you stream videos from a site which uses
Flowplayer, you'll find some Akamai stuff in your AppData. The same if you watch
Fox News on your Windows PC.
DOM Store is nothing but an advanced method to store cookie information. The fact that OP finds the URL of his / her credit card company most probably is because that site uses Akamai technology to store advanced cookie information in DOM Store.
Safety is one thing. Paranoia something else. If you allow cookies, if you subsribe MSDN or TechNet, if you buy and download something from Adobe, and so on, you need to accept the fact your AppData contains some information about you.