Supply is down and demand is up, driving the price of certain zero-day vulnerabilities skyward.

"I will raise the need to address ongoing challenges posed by terrorists and criminals using encryption," says George Brandis, Australia's attorney general.

The vulnerability impacted only the web versions of these apps.

The reports show that the CIA targets devices, and apps have not been compromised.

Lead organizers have been fending off phishing attempts and have moved to private encrypted communication channels to protect the thousands of people expected to take part in Saturday's events.

The Guardian is under fire for a headline claiming WhatsApp has a massive security flaw, with prominent security researchers calling for a retraction