The gains may not be over.
FireEye, Proofpoint, Cisco, Symantec and other security providers all closed higher Monday.
Recent earnings reports from IBM, Intel and others suggest cloud infrastructure demand is still taking a heavy toll on IT hardware sales. That is, outside of one market.
The Department of Justice and FBI allege that officers with the FSB, the KGB's successor organization, helped plan and carry out the theft of 500 million Yahoo! user accounts.
In a bring-your-own-device world, many corporate networks welcome their employees' iPhones and Android phones --and their vulnerabilities.