Chidinma worries that downloading all of the interesting apps she finds on her two phones also brings with it a high risk of them being infected with malware or spyware of some kind. To put her mind at ease, she does a little research about the incidence of such events.
Nasir has had to reinstall the operating system on his computer a number of times because of sudden, noticeable drops in performance due to viruses. He's tired of repeating the same process every couple of months, but just hasn't taken the time to learn about antivirus software. Now he's ready to learn.
Nasir's computer was stolen and the results of his investigation on AGA and the story he was writing were unencrypted. He is worried that his sources may become compromised. If the documents had been encrypted then no one would be able to access them.