This would seem to bode well for ROI Chinese Hackers Used 'Spear Phishing' To Attack U.S. Chamber Of Commerce
After the hackers were caught in May 2010, the Chamber made massive upgrades to its network security, including installing a new spam filter on staff email accounts; giving encryption keys that generated new passwords every 30 seconds to employees working remotely; and banning employees traveling to China from bringing laptops, the former employee said.
https://www.huffingtonpost.com/2011/12/21/chinese-hackers_n_1163524.html