Category Archives: security

How can I know how secure my home computer is?

On Monday, March 13 at approximately 10:30 AM CST, I will be appearing on KFUO Radio’s Faith and Family program to discuss home computer security with host Andy Bates. One of the questions he’s planning to ask: How can I know how secure my home computer is?

I’m going to use this space to elaborate ahead of time on some of the things we are going to talk about. We could talk for an hour on any of the questions he’s going to ask, and he gave me three questions and 25 minutes. This is my workaround.

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What can I do to improve the security of my digital information?

On Monday, March 13 at approximately 10:30 AM CST, I will be appearing on KFUO Radio’s Faith and Family program to discuss home computer security with host Andy Bates. One of the questions he’s planning to ask: “What can I do to improve the security of my digital information?”

This, fortunately, may be the easiest question to answer and the easiest step to implement.

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How easily can someone hack my home computer and steal personal information?

On Monday, March 13 at approximately 10:30 AM CST, I will be appearing on KFUO Radio’s Faith and Family program to discuss home computer security with host Andy Bates. Here’s the scariest question he’s planning to ask: How easily can someone hack my home computer and steal personal information?

Someone asked me that question at work once, except it was about a work computer. I whipped out a copy of a book about Metasploit, flipped to page 137, and started reading. My point was that I could teach this guy how. He didn’t take it well, so I don’t recommend doing that.

My point that I could teach this guy how to do it still stands, though. And I think I could teach Andy how too.

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Convert a list of hostnames to a list of IP addresses

I had a client with a huge list of hostnames that they needed to convert to IP addresses so they could scan them. That’s common. I used to have a Windows batch file to convert a list of hostnames to a list of IP addresses, so I dug it out of my archives. This isn’t like a ping sweep; they knew the machine names but their tool needed IPs.

I used the file to resolve lists of machines so I could load them into a centralized logging or vulnerability management system. This client had the same need and nobody there had a similar tool. So I shared mine with them. And I present it here so I won’t lose it again, and if you need it, you can use it too.

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Asuswrt-Merlin vs Cisco

I recently saw advice to buy a Cisco RV130W instead of buying an Asus router such as an RT-AC66U and souping it up with Asuswrt-Merlin. I can see both sides of the argument but in the end I favor the Asus solution when I consider Asuswrt-Merlin vs Cisco. Here’s why.

Now, if you’re arguing business vs personal use, there’s no contest. In a business setting, buy the Cisco.

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How to clean viruses off your computer for free

Whether you’ve gotten a tech support scam phone call or not, it can be helpful to know how to clean viruses off your computer for free. And yes, I do mean free.

A lot of people get ripped off due to virus scares and it makes me mad. I’m a computer security professional. I advise large companies on computer security for a living. Today I’ll take a few minutes to advise you.

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How to destroy a computer hard drive

When you get rid of a computer hard drive, it’s important to get rid of it properly. Your hard drive probably contains a lot of sensitive information on it, like tax returns or loan applications. Here’s how to destroy a computer hard drive when you need to.

Let’s set some expectations here. Making the data impossible to recover isn’t something you can do without a drive shredder. But you can make it so difficult and expensive to recover that nobody will bother. That’s good enough. If it costs $10,000 to recover the data from your drive, a thief isn’t going to do it, due to the risk that you don’t have $10,000 to steal.

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