Banks whose networks have been targeted include JPMorgan and Wells Fargo.

Executive order would create program to guard vital computer networks.

Executive order would create program to guard vital computer networks.

Republican opposition keeps Senate from passing Lieberman bill.

Republican opposition keeps Senate from passing Lieberman bill.

Republicans argue standards to protect infrastructure would harm business.

Republicans argue standards to protect infrastructure would harm business.

Measure would push government, businesses to share cyber threat information.