sites on localhost

[der.hans]

moin moin,

once in a while I run into a site trying to make JavaScript or XHR
connections to localhost.

What are they doing?

Are they setting up backdoor tunnels on localhost?

Are they trying to run a daemon out of the browser?

Are they trying to escape the sandbox and exfiltrate data?

ciao,

der.hans
-- 
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#  Eternal vigilance is the price of liberty. -- Thomas Jefferson