The US Securities and Exchange Commission (SEC) this past week approved new rules that require publicly traded companies to publicize details of a cyber-attack within four days of identifying that it has a "material" impact on their finances, marking a major shift in how computer breaches are disclosed. "Whether a company loses a factory in a fire, or millions of files in a cybersecurity incident, it may be material to investors," the SEC chair said. "Currently, many public companies provide c
