Learn if you should install security software on your computer

Published: Thursday, October 24, 2013 at 11:28 a.m.
Last Modified: Thursday, October 24, 2013 at 11:28 a.m.


Question: My computer has never acted like it has a virus. Do I still need to install security software?

Answer: That’s one of the many computer security myths I hear regularly. The truth is that viruses don’t always make your computer act up. Many viruses are designed to make sure you don’t notice them. They can steal your information, send spam or attack other computers without you knowing. The only way to catch them is with security software.


Question: I keep getting unsolicited calls on my cellphone. Is there anything I can do about it?

Answer: One of the little-known secrets of the Do Not Call registry is that it works for cellphones, too. You can add three numbers to it, whether they’re cellphones or landlines. That should be enough for most households. However, if you’re still getting calls, check with your carrier. Most carriers allow you to block specific numbers. You can also use a disposable number app like Google Voice or Burner to keep your number from getting out in the first place.


Question: I hear all sorts of advice on how and how not to charge a smartphone battery so it lasts for years. Do you have a definitive answer?

Answer: I do indeed. Lithium-ion batteries found in mobile gadgets last longest when you keep them between 20 percent and 80 percent charged. Avoid leaving it for a long time at a full charge or completely empty. You also need to keep the battery out of extreme heat, like an unattended car during summer in Phoenix. Those steps should help your battery last the life of the gadget.


Question: I want to buy a tablet and I saw that some places sell them used. What are the pros and cons of buying a used tablet instead of a new one?

Answer: The pros and cons are about the same as buying anything used. You’ll have to deal with someone else’s wear and tear, so the gadget might have scratches or dings. The screen and battery might not be in the best condition, either. So it might not be worth the money you save. I would look at refurbished tablets instead. Apple and other tablet makers often have these for sale. They’ll have new batteries and a warranty, and you’ll still save a few bucks.


Question: Will more RAM really speed up my computer? It’s starting to move really slowly and I want to be absolutely sure it will before I buy.

Answer: It could. If you have an older computer with less than 4 gigabytes of RAM, a memory boost can make things a bit snappier. Use the Crucial Memory Adviser to see what kind of RAM you should pick up. However, if you already have 4 GB or more, adding more probably won’t help your cause. In that case, you want to check with a program like Process Explorer to see what is using your computer’s resources and slowing things down.



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