Collaborate Disseminate
For as useful as computers are in the modern ham shack, they also tend to be a strong source of unwanted radio frequency interference. Common wisdom says applying a few …read more Continue reading Ferrites Versus Ethernet in the Ham Shack
Requests for information (RFI) and Requests for Quotes (RFQ) can confuse even the most seasoned project managers. Read this guide to review the difference between them.
The post What important features of RFIs and RFQs do project managers need to know?… Continue reading What important features of RFIs and RFQs do project managers need to know?
Amateur radio operators and shortwave listeners have a common enemy: QRM, which is ham-speak for radio frequency interference caused by man-made sources. Indiscriminate, often broadband in nature, and annoying as hell, QRM spews forth from all kinds of sources, and can be difficult to locate and fix.
But [Emilio Ruiz], …read more
Continue reading Tracking Down Radio Frequency Noise Source, With Help from Mother Nature
We occasionally get stories on the tips line that just make us want to know more. This is especially true with tech stories covered by the mass media, which usually leave out the juicy tidbits that would just clutter up the story for the majority of non-technical readers. That leaves …read more
Continue reading Second-Hand Television SHINEs, Takes Down Entire Village’s Internet
Next time you get a new device and excitedly unwrap its little poly-wrapped power supply, remember this: for every switch-mode power supply you plug in, an amateur radio operator sheds a tear. A noisy, broadband, harmonic-laden tear.
The degree to which this fact disturbs you very much depends upon which …read more
Continue reading The RFI Hunter: Looking for Noise in All the Wrong Places
In the leafy suburbs of northern Virginia, a place ruled by homeowner’s associations with tremendous power to dictate everything from the color of one’s front door to the length of grass in the lawn, something as heinous as garage doors suddenly failing to open on command is sure to cause …read more
Let’s assume there is this code for including other php files from user input (yes, I know it’s a bad choice):
$input = addslashes($_GET[“input”]);
if (strpos($input, ‘../’) === false) {
include_once(‘/path/to/php/files… Continue reading Can there be a way to exploit PHP include_once() when the input is filtered?
House lawmakers are calling on stakeholders in the health care industry for tips on how to secure old technology in the medical field. The Committee on Energy and Commerce put out a request for information Friday detailing its concern that outdated equipment and software used in hospitals and other medical organizations pose cybersecurity vulnerabilities that can put patients at risk. “While health care cybersecurity is a complex, nuanced challenge with many different contributing factors, the use of legacy technologies, which are typically more insecure than their modern counterparts, continues to be a root cause of many incidents,” the committee wrote. Fueling the committee’s concern is the WannaCry ransomware attack that paralyzed operations at numerous hospitals and health organizations around the world. The May 2017 attack, which has been widely attributed to North Korea, exploited unpatched versions of Microsoft Windows. In some cases, the machines were being used to run medical devices, such as MRI scanners and […]
The post Lawmakers want to know how to mitigate cyber risk in medical devices appeared first on Cyberscoop.
Continue reading Lawmakers want to know how to mitigate cyber risk in medical devices
Ask a hundred people why they like to escape to the forest and you’ll probably get a hundred reasons, but chances are good that more than a few will say they seek the peace and quiet of the woods. And while the woods can be a raucous place between the wildlife and the human visitors, it is indeed a world apart from a busy city street, at least in the audio frequencies. But on the EM spectrum, most forests are nearly as noisy as your average cube farm, and that turns out to be a huge problem if you happen …read more
Continue reading All Quiet on the West Virginia Border: The National Radio Quiet Zone