Most of the exploits and listening techniques reported by the information from Wikileaks Vault 7 indicate that the CIA can use to eavesdrop are mostly targeted tools, and not the blanket surveillance hacks that were originally reported.
Scott is worried about Vault 7 and the CIA's hacking. He's heard from Edward Snowden's tweets that the CIA has left a huge vulnerability in our mobile devices. Leo says that was the problem with the Feds wanting to crack Apple's iOS since once cracked, it's available to anyone. But the reality is, the hack is 3 years old and Apple has worked to close those vulnerabilities. So it's likely that unless Scott's phone hasn't been updated for three years, he's safe.