Security Stocks Eye Best Week in Months as List of Hacks Grows

Shares of cybersecurity companies have been on a tear of late, as a rash of high-profile hacks prompt an aggressive response from the U.S. government and may signal strong demand for their services over the long term.

Attacks have recently come with alarming regularity. McDonald’s Corp. on Friday confirmed a breach of South Korean and Taiwan data, a day after hackers stole source code and related internal tools from Electronic Arts Inc. Earlier this week, JBS USA said it had paid a ransom to criminals responsible for a cyberattack in May that disrupted meat processing across North America and Australia.