New cybersecurity boom arrives in Silicon Valley

Nefarious cybercrime syndicates and villainous state-sponsored hackers are making the digital world an increasingly dangerous place. That's bad news for companies suffering growing losses from relentless cyberattacks. But it's good news for Silicon Valley, where cybersecurity has suddenly become the hot new-old thing.

The security industry has been around for decades and produced giants such as McAfee and Symantec in the 1990s. But over the last decade it was mostly overlooked by venture capitalists and entrepreneurs, who didn't see much opportunity for big returns. That's all changed now that the volume and sophistication of attacks are increasing, forcing victims to open their wallets.