The Smart Computer Security Checklist You Should Complete Today. Cybersecurity issues were dominating the news last year, and it doesn't seem to be slowing down. Between hackers stealing data left and right and malware locking computers for a ransom, the internet becomes a dangerous place. You can't afford to click the "Remind Me Later" button when a new security update pops up on your screen anymore. Here is a quick PC security checklist you can knock out in a couple of hours. Stay on track by checking off all the items on this list.