Staying Safe Online · Level 3 of 5 · Intermediate

Devices, updates, and Wi-Fi

Keep phones and computers patched, locked, and backed up.

Study notes

Install software updates promptly. Many updates fix security holes attackers already know about.
Lock devices with a PIN, password, or biometric, and set them to lock automatically.
Back up important files with the 3-2-1 idea: three copies, on two kinds of storage, with one off site or in the cloud.
Change the default admin password on your home router and use WPA2 or WPA3 Wi-Fi encryption.
On public Wi-Fi, avoid sensitive tasks unless the site uses HTTPS. A trusted VPN adds protection on untrusted networks.

Quiz: 6 questions

Choose one answer for each question, then check your answers. Score 5 of 6 to pass. Then enter your name and email to download a PDF certificate and have a copy emailed to you. Answers are graded in your browser.

1. Why install security updates quickly?

They fix holes attackers may already exploit They slow your device They delete files They are optional decorations

2. The 3-2-1 backup idea means:

Three copies, two media types, one off site Three passwords, two phones, one email Back up every three years Delete two copies

3. Which home Wi-Fi setting is best?

WPA3 or WPA2 encryption with a strong password No password WEP Default router password

4. Ransomware locks your files. What helps most to recover?

A recent backup stored separately Paying immediately Restarting ten times Emailing the attacker

5. On public Wi-Fi you should:

Avoid sensitive tasks or use HTTPS sites and a trusted VPN Do your banking on any page Turn off your screen lock Share files publicly

6. Auto-lock on your phone helps because:

A lost phone is harder for others to open It saves data It speeds up apps It blocks calls

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