A petition has been made in hopes to send a message to Korean Entertainment companies: if they hire Jenny Hyun, customers will not buy it.
You can sign it HERE
Source: Jenny Hyun's twitter
and screen shot credit and longer article at asianjunkie.com
edit: lj user failing_empress has pointed out that you can contact sm at "firstname.lastname@example.org for interscope girls' generation
call 02-6240-9800 for SM entertainment" to voice your concerns on this matter