The case detailed here does not mean that employers can sue employees for any losses that arise out of their employment. It will be difficult, if not impossible, to obtain compensation for negligent work, or mistakes. However, where there is deliberate misconduct like in this case, remedies are available to the employer beyond dismissal for cause.
Whistleblowing occurs when employees reveal corporate wrongdoing, usually in their organization, to law enforcement. Unfortunately, it is common for whistleblowers to experience demotion, dismissal and otherwise negative treatment from their employers after they disclose the malfeasance or corruption.