Keep patched to stay secure.
Do you update (patch) your device software regularly?
If you don't, you should consider doing so. Each month, on the first Tuesday of the month, Microsoft releases an update fixing, on average, over 70 vulnerabilities in its software (every month — it's called Patch Tuesday!).
Other vendors have different schedules, but security patches are common and frequent on all platforms.
The vulnerabilities are public once the fix is released, so the bad guys frequently use that information to build hacks to take advantage of people who haven't updated yet.
Make sure that's not you.