How DDoS attacks work

Yesterday, half the Internet was broken. I knew something was wrong when I couldn’t get into Salesforce to check on a support ticket for my biggest customer. Another member of my team sent us a warning that a big DDoS attack was happening, and not to count on being able to issue very many quotes today. So what, exactly, is a DDoS attack and how do DDoS attacks work?

I suppose there’s another question to ask too: What can you do to avoid being part of the problem? We’ll save that for the end.

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Cordless phone frequencies

Cordless phone frequencies

If you are wondering about cordless phone frequencies, there are seven bands that have been in use since the 1980s. You can still buy phones for four of those frequencies.

There are two reasons to be concerned about a cordless phone’s frequency. The first is interference. Some phones interfere with other devices, such as wi-fi. The other reason is security.

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Wire a ceiling fan with light to one switch

Wire a ceiling fan with light to one switch

People frequently wire a ceiling fan with a light to two light switches. That way they can control the fan with one switch and the light with the other. But what if the room has only one switch and you have to wire a ceiling fan with light to one switch? You can still do it. You just have to know what to do with the fan’s red or blue wire.

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CISSP continuing education

Besides work experience, I probably get more questions about CISSP continuing education than anything else CISSP-related. Fortunately, keeping your CISSP can be a lot cheaper and easier than getting it in the first place was.

CISSP continuing education is measured in CPEs. You get one CPE per hour of “study.” Study is a pretty loose term. If you’re learning about security, you can probably find a way to make it count. You need to get 40 CPEs per year.

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What scale are Hot Wheels cars?

What scale are Hot Wheels cars?

What scale are Hot Wheels cars, you ask? Unfortunately it varies a bit. They tend to be a bit less than 1:64. But scale isn’t Hot Wheels’ objective. Fitting in the package is. That means the size of Hot Wheels cars is between 2.5 and 3 inches, depending on what looks right for the prototype model. That’s when a prototype even exists. So it can take some homework to figure out the actual scale of any given model. Read more