Using the simple psst tense with a recent action, instead of the present perfect
The clock struck.
The clock has struck.
If we are speaking of an action just finished, we must use the present perfect instead of the simple past tense. For example, immediately after the clock strikes, we should't say The clock struck, but The clock has struck.
Precaution while using WiFi
Change your Windows Wireless Network Connection properties from andAutomatic Connectionand (the default) to andOn Demandand to prevent your computer from automatically joining unsafe networks. Only connect to the public Wi Fi when you need to use it. If you don t need it, disconnect or turn off your device. The more time you spend on the network, the more chances you give a hacker to break in and do something bad.