David L. Farquhar, computer security professional, train hobbyist, and landlord
Sometimes a dead electrical outlet means you need to call an electrician–but not always. Here’s how to troubleshoot a dead electrical outlet and solve the problem yourself, ranging from easiest to hardest, so you can decide when to stop and hire an electrician.
When it comes to file types you should never trust, PIF belongs high on the list. PIF used to be an important file type, but it’s largely obsolete today. But if you’re curious, here’s the PIF file type meaning.
Get ready for a trip down computing history lane. But this once-important file format is risky today. In all honesty, it’s largely outlived its usefulness in most instances.
I have a Roku 2720X. I’ve had it since 2014, so it’s a few years old now, but I like it. Lately it’s been having some problems though. It works fabulously with Hulu and Netflix, but streaming local media and streaming baseball give me trouble. I traced it to overheating. So let’s look at some Roku overheating fixes.
Some people replace their devices with newer models with faster dual- or quad-core processors. This works; a more powerful chip will handle the load of newer, more demanding apps better without heating up as much. But you can extend the useful life of your venerable single-core 600 MHz Roku devices too, at least until Roku stops releasing updates for them.
The Lionel 92 circuit breaker provides an important safety feature. Additionally, if you use a low-end transformer that lacks a direction button, it provides a handy direction button. Unfortunately the original Lionel 92 circuit breaker instructions have one mistake in them.
Here’s how to use this critical accessory to maximize your personal safety. Depending on your setup, you may need more than one of them.
Are PDF files safe to open? It depends. Don’t you hate when security people say things like that?
There are risks involved with PDF files, but you probably also can’t avoid PDFs entirely. So here’s what you can do to work with PDF files safely.
Cryptography is one of the more difficult concepts to master when studying for a certification like CISSP. I know from my own experience it’s really easy to let the details overwhelm you. After seeing an acquaintance’s Linkedin post, I thought I’d write about cyber security and cryptography and what you really need to know.
Let me start with one thing. I have never, ever had to encode or decode anything by hand. I’m very confident I can stay employed another 20 years in the cyber security field and never have to do the math myself.
No company worked harder to get into the baseball card market than Fleer. The inventor of bubble gum wasn’t able to get into the baseball card market for good until 1981. Sadly, Fleer went defunct in 2005 after being mostly an also-ran to Topps in value and interest. But here’s a look back at the most valuable Fleer baseball cards.
Fleer had a hard-luck existence in the baseball card market and it got worse after the baseball card bubble burst. But it had some great stories, especially in its early years. The stories behind the cards are often what makes the hobby fun.
CISSP and CEH are two of the most common computer security certifications you’ll see in security program job descriptions. If you want to advance your career by becoming a certified professional, you might consider each of them. Here’s my experience of CISSP vs CEH.
The Internet changed the estate sale business dramatically over the last 20 years, but I’ll argue it’s mostly for the better. Let’s look at how to find estate sales, but perhaps more importantly, how to find the right estate sales.
Where you look for estate sales in your area makes a difference. Estate sales are a great place to find bargains, but that doesn’t help you if you can’t find the sales first.
The Commodore 1581 drive was the C64 3.5 floppy released in 1987 to extend the usable life of its 8-bit line of computers. It was an 800K floppy disk drive using the then-new 3.5-inch disk format. It stored almost as much data as five 5.25-inch disks formatted by a Commodore 1541, and was the closest thing to affordable mass storage available for the C-64 at the time.