Updates muhimu sana.
1) Antivirus: husaidia kwa internet security plus protects against viruses, trojans, adware, malware, etc etc
2) Windows Operating System: kuna updates aina tofauti... From critical system updates n drivers for the computer architecture to regular updates that you can ignore at will. Hapa, kuna mambo kama System & office suite upgrade, firewall, *graphics + audio + Wi-Fi drivers* etc etc, windows defender, Microsoft Security Essentials na kadhalika.
If you have access to the internet, usichelewe. Update as frequently as you can. Better safe than sorry.
Si lazma you update:
ikiwa hauchezi games kama FIFA,
ikiwa hautumii "heavy applications" za computer aided design,
hautumii external hard drives ambazo haujui kama zina virus...