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Implementing Secure Solutions with Virtual Private Networks
Cisco Implementing helper
Killexams : Cisco Implementing helper - BingNews https://killexams.com/pass4sure/exam-detail/300-730 Search results Killexams : Cisco Implementing helper - BingNews https://killexams.com/pass4sure/exam-detail/300-730 https://killexams.com/exam_list/Cisco Killexams : ICYMI: Critical Cisco RCE Bug, Microsoft Breaks Down Hive, SHI Cyberattack

Cybercrime never sleeps — but editors do. To cap off this short Fourth of July week, Dark Reading's editors are collecting all of the interesting threat intelligence and cyber-incident stories that we just didn't get to earlier but would be remiss to not cover.

We're talking a critical Cisco vulnerability, a Microsoft alert on upgrades to the Hive ransomware, QNAP issues, and a pair of cyberattacks.

In this week's "in case you missed it" (ICYMI) digest, read on for more about the following:

  • Critical Cisco Security Vulnerability Allows Root Access to OS
  • Hive Ransomware Gets a Rust-y Upgrade
  • QNAP Warns on "Checkmate" Ransomware Attacks
  • "SHI-eesh": IT Giant Knocked Offline in Coordinated Cyberattack
  • California College Remains Offline After Ransomware Hit

Critical Cisco Security Vulnerability Allows Root Access to OS

Cisco has rolled out patches for 10 security bugs, including a critical flaw that could allow cyberattackers to manipulate application source code, or configuration and critical system files.

The critical issue (CVE-2022-20812, CVSS severity score of 9.0) is a path-traversal vulnerability affecting the Cisco Expressway Series software and Cisco TelePresence VCS software, if they are in the default

"A vulnerability in the cluster database API of Cisco Expressway Series and Cisco TelePresence VCS could allow an authenticated, remote attacker with Administrator read-write privileges on the application to conduct absolute path traversal attacks on an affected device and overwrite files on the underlying operating system as a root user," according to the advisory, the latest since Cisco's last bug disclosure in May.

The vulnerability arises thanks to insufficient input validation of user-supplied command arguments, the networking giant noted.

"An attacker could exploit this vulnerability by authenticating to the system as an administrative read-write user and submitting crafted input to the affected command."

Hive Ransomware Gets a Rust-y Upgrade

The ransomware-as-a-service (RaaS) offering known as Hive has overhauled its infrastructure, using the programming language Rust.

That's the buzz from Microsoft, whose security researchers noted that Hive is an exemplar of adapting to the rapid change found in the underground economy.

"With its latest variant carrying several major upgrades, Hive also proves it’s one of the fastest-evolving ransomware families, exemplifying the continuously changing ransomware ecosystem," researchers said in a post this week. "The most notable changes include a full code migration to another programming language [from GoLang to Rust] and the use of a more complex encryption method."

Rust, a language also used by the BlackCat ransomware, allows advances in coding control, memory usage, resistance to reverse engineering, and access to a range cryptographic libraries, the researchers said.

As for the encryption, "the new Hive variant uses string encryption that can make it more evasive," according to the advisory. “The constants that are used to decrypt the same string sometimes differ across samples, making them an unreliable basis for detection.”

QNAP Warns on "Checkmate" Ransomware Attacks

QNAP, the network-attached storage (NAS) vendor, is flagging activity against its devices that results in the execution of the Checkmate ransomware.

The cyberattackers are specifically targeting SMB file-sharing services exposed to the Internet, using a dictionary attack to break accounts with weak passwords.

"Once the attacker successfully logs in to a device, they encrypt data in shared folders and leave a ransom note with the file name '!CHECKMATE_DECRYPTION_README' in each folder," according to QNAP's advisory this week. It added, "We are thoroughly investigating the case and will provide further information as soon as possible."

Customers of the Taiwan-based appliance maker have been suffering ongoing, relentless ransomware activity — which Dark memorizing broke down earlier this week (along with potential defenses) in an extensive roundtable of experts.

To protect their businesses and avoid a ransomware checkmate, users should avoid exposing the SMB service to the internet and should employ strong passwords in any event.

"SHI-eesh": IT Giant Knocked Offline in Coordinated Cyberattack

IT-supplier bigwig SHI International said this week that it was the target of "a coordinated and professional malware attack."

The New Jersey-based vendor, which has 5,000 employees and 15,000 customers around the world, said that it moved quickly to stop the infection and minimize the impact on SHI’s systems and operations. That meant that some systems, such as SHI’s public websites and email, were knocked offline "while the attack was investigated and the integrity of those systems was assessed."

The SHI staff regained access to email, but as of Thursday the main website was still not operational. The company said in a website notice that IT teams continue to work to bring other systems back online.

It's unclear what the cyberattackers' goal was, but some researchers noted that a supply chain compromise attempt is a real possibility.

“Apart from being a large enterprise, SHI is a major software and hardware provider to several Fortune 500 companies, and while there is no evidence regarding third-party suppliers getting breached or customer data getting exfiltrated, this is certainly too close for comfort for many of their customers," Rajiv Pimplaskar, CEO at Dispersive Holdings, said via email.

California College Remains Offline After Ransomware Hit

As the latest example of what happens when IT isn't prepared for a hit, the 12,500-student College of the Desert, a community college in Palm Desert, Calif., remains offline after suffering which researchers suspect was a ransomware attack.

The cyberattack brought down the school's online services and campus phone lines on July 4. As of late Thursday, the school's website still returned a notice that it "is currently experiencing a system-wide outage of most services," including the ability for students to request transcripts, add or drop classes, or register for classes.

"Educational institutions have continued to be a prime target for ransomware groups over the last couple of years," says Josh Rickard, senior security solutions architect at Swimlane, noting that this is the second time College of the Desert has been hit with a malware attack; the first incident took place in August 2020. "To prevent similar attacks in the future and ensure that operations continue to run smoothly, education institutions such as College of the Desert need to devote more resources to information security teams, tools, processes, and products."

Rickard suspects the incident was ransomware due to the severe operational disruption, but it should be noted that College of the Desert has not confirmed that, admitting only to a "computer network disruption."

Fri, 08 Jul 2022 01:10:00 -0500 en text/html https://www.darkreading.com/threat-intelligence/icymi-critical-cisco-rce-bug-microsoft-hive-shi-cyberattack
Killexams : Part C: How to do this – Technology and Practical Guidelines

2. For implementation

1. Technology - Main and Peripheral Systems

As mentioned earlier, synchronous methodologies have been extensively used to deliver services for patients with dysphagia in several research studies with highly positive outcomes (e.g., Burns et al., 2016; Burns et al., 2017; Malandraki et al., 2011; Malandraki et al., 2014; Morrell et al, 2017; Perlman, & Witthawaskul, 2002; Raatz et al., 2019; Ward et al., 2012a; Ward et al., 2013).  As an important reminder, these positive outcomes are specific to the methodologies used in these studies.

To implement synchronous clinical tele-assessments and tele-therapy sessions live video-conferencing is needed. That means that both the clinician and the patient need to have access to a computer or laptop (or tablet – though not optimal), and to a software platform that allows live secure interaction. Ideally, technology considerations should be determined with the guidance/help of someone with expertise/experience in IT and telehealth knowledge. Under the current condition, that may not always be possible, but at least IT support should be available in most sites or even from a distance.

In dysphagia telehealth research, both dedicated (business class) technology solutions, and more widespread (software based) technology solutions have been used with success, although varying degrees of image and audio quality and connectivity issues have been reported at times (e.g., Malandraki et al. 2011; Ward et al., 2013).

As mentioned in Part B of this guide, there is an abundance of commercial videoconferencing hardware and software available. Clinicians need to remember that privacy, security, authentication, and even reimbursement considerations need to be carefully reviewed before deciding on a specific videoconferencing platform. See Part B of this guide and the additional resources page for a list of several available platforms with HIPAA aligned versions.

For dysphagia-specific telehealth technology solutions, clinicians are encouraged to also consider the following characteristics:

  • Large enough screen to allow full view of patient and clinician at the same time, and possibly additional camera views or materials to be shared (e.g., Burns et al., 2016; Malandraki et al., 2014) . Alternatively, the use of two screens (on the clinician’s end) can also be beneficial.
  • Ability of the software platform to allow screen share, so that clinicians can share instructions, stimuli and reinforcements/rewards (e.g., Malandraki et al., 2014). Most platforms have this feature.
  • Ideally the use of an external web camera on the patient's site. This will allow to move the camera closer to the patient more easily for clearer views.
  • Ability of the platform to allow simultaneous video/audio and chat/text, so that patients who may not be able to verbalize can text their responses into the chat box of the platform. Most platforms have this feature.
  • Ability of the platform to allow two cameras (from patients’ room) to be connected at once, so clinicians can visualize multiple views of the patient’s seating and head, neck and torso (for example, front view and lateral view) as seen in the figure below. Additional peripheral or hardware devices may be needed for this function to be optimal (see Peripheral devices section).
  • Ability to control who enters the tele-session and ability to mute and start/stop cameras on both ends for security and confidentiality purposes (Gough et al., 2015). Most platforms have this feature.
  • Ability of the platform to modify the relative size of each image shared with the patient, to increase flexibility on how stimuli are presented. Several platforms allow this feature.

In addition to synchronous methods and live interaction, asynchronous applications can also be valuable especially in the current situation and with the high definition video recording capabilities that most phones and iPads have. For example, asking a parent to videotape a child consuming their typical meal or snack (Clark et al., 2019; Kantarcigil et al., 2016), or taking a picture of the seating of a child before the evaluation is conducted and sending the picture to the clinician (Raatz et al., 2019) could offer valuable information for clinical assessments. Considerations about how this information will be shared with the clinician in a secure and confidential way need to be discussed and agreed upon beforehand. Also, we recognize that in the US billing and reimbursement regulations may limit the use of asynchronous telehealth for dysphagia management at this time, therefore clinicians need to check with their providers before adopting any of these models.

The development of apps and devices that provide the ability of patients to practice their prescribed exercises at home while data are transmitted remotely to clinicians have started to emerge as well, both in research (e.g., Constantinescu et al., 2017; Kim et al., 2019; Starmer et al., 2018; Wall et al., 2017; Wall et al., 2020), and in the commercial domain (e.g., use of the Iowa Oral Performance Instrument, Tongueometer and others). One may not realize this, but all these are also examples of asynchronous tele-services for dysphagia.

Quick notes about tele-instrumental assessments: Although the discussion for the use of tele-instrumental assessments has been limited at the present time, there is research evidence showing that tele-VFSS assessments can be as reliable and valid as in-person VFSS assessments (Burns et al., 2016; Malandraki et al., 2011). However, in these studies the equipment, training of clinicians and facilitators, and all safety requirements were first put in place and standardized protocols were used. This is also important to remember. For optimal clinical outcomes, training and standardization are essential to our clinical practices.

In addition, to conduct tele-VFSS assessments, critical and expensive hardware and peripheral devices would be needed. Burns and colleagues used a commercially available system (C20 Cisco TelePresence) in their study and reported good image quality, however the remote clinician was in the same facility as the patient, and not in a different building (Burns et al., 2016). In addition, high-end peripheral equipment (high definition cameras and microphones) would also be critical, so that both the remote clinician and the patient can view each other and interact in real-time. Although a few studies on tele-laryngoscopy have been published (e.g., Dorrian et al., 2009; Kim et al., 2000; Wildi et al., 2004), to our knowledge no studies have explored the use of telehealth in performing FEES.

In addition to these synchronous telefluoroscopic models, asynchronous VFSS teleconsultation models can also be valuable. In a study where a newly trained clinician completed VFSSs of patients with dysphagia, and the videos were then uploaded on a secure server for independent review by a dysphagia expert, results showed good agreement between the two clinicians for most diagnostic parameters (Malandraki et al., 2013). Importantly, substantial disagreements on treatment recommendations were observed for approximately 50% of the sample, suggesting that without the expert tele-consultation, quality of care would have been substandard for these patients (Malandraki et al., 2013). This study demonstrated the additional and critical value of telehealth for teleconsultation services for dysphagia.

Having a solid Internet connection is critical in being able to offer quality telehealth for any type of services, and even more so for swallowing tele-evaluation and tele-rehabilitation services. A solid connection allows for good quality transmission of video and audio data. This is often referred to as bandwidth, that is, the data rate supported by a network connection. Bandwidth needs to be considered at both the clinician’s and the patient’s end.

In dysphagia telehealth research successful sessions have been conducted with relatively low bandwidth levels (ranging from as low as 128 Kbps and as high as 1Gbps). However, in some of these studies, issues with video or audio quality and connectivity were reported (e.g., Malandraki et al., 2011; Ward et al., 2013), therefore the use of higher bandwidth has been suggested whenever possible (Ward & Burns, 2014). According to ATA guidelines, bandwidth should be at a minimum of 384 Kbps for both upload and download, and should provide a minimum of 640 x 360 resolution at 30 frames/second (ATA, 2014; Gough et al., 2015). In general, the higher the bandwidth on both ends, the better the connection will be.

For the US, according to the Federal Communications Commission (FCC), there are specific recommendations for minimum bandwidth speeds for different facilities and telehealth needs. The FCC website reports the recommended FCC minimum bandwidth speeds for each type of facility: https://www.healthit.gov/faq/what-recommended-bandwidth-different-types-health-care-providers

Also, it has to be noted that many cloud-based videoconferencing telehealth platforms (such as Zoom and Cisco Webex) can function adequately even on a modest bandwidth of 1.5Mbps (Baird Struminger & Arora, 2019). However, if multiple users are connected to the same network, then additional bandwidth will be required to ensure video and audio transmission is uninterrupted. To test the bandwidth of both the clinician and the patient connections, a plethora of sites provide this information freely and easily. If a patient does not have a strong Internet connection, asking them to switch to a wired dedicated line may Strengthen their Internet connectivity (Gough et al., 2015). Patients and clinicians can also purchase a wireless extender or booster to troubleshoot and Strengthen bandwidth issues.

Peripheral Devices

With adequate funding and time to build a telehealth solution, acquiring high definition web cameras and high-quality microphones would be critical considerations (ATA, 2014). For example, web cameras with pan/tilt/zoom (PTZ) capabilities and far end controls that can be controlled remotely by the clinician are highly valuable, because they allow the clinician to scan the entire room where the patient is, and tilt and zoom to specific body areas that need to be evaluated or seen more extensively (e.g., Burns et al., 2017; Malandraki et al., 2011; Ward et al. 2009). In addition to PTZ cameras, the use of two cameras that offer both lateral and frontal views of the patient’s face when trial swallows are attempted can also be extremely helpful (Kantarcigil et al., 2016) as seen in the figure to the right. Similarly, there are important considerations with respect to microphone selection. Ideally we want to consider echo cancelling field microphones (e.g., Burns et al., 2017), a lapel microphone that enables subtle signs of difficulty (such as throat clearing) to be perceived (Ward et al., 2014), as well as the microphone response sensitivity for adult or pediatric speech signals and noise-cancellation headphones for best acoustic delivery.

Under the current condition, we may have to get by with the cameras and microphones that most computers and phones have at least at the end user (patient’s) end. Although that is not ideal, most new computers, tablets and phones have high definition cameras and adequate quality of microphones. Below are some tips to ensure the currently available peripheral devices (cameras, microphones, headphones) provide adequate input for dysphagia care:

  • Placement of the cameras and/or placement of the patient will be of most importance depending on what part of the body you want to visualize or what task you want to observe. This is a task for which the facilitator will be integral.
  •  For patients/families who own smart phones, using asynchronous methods and instructing the facilitator to record small video clips of the patient performing tasks that are difficult to visualize using a regular computer camera (e.g., velar movement during phonation) may be necessary. (Video coming soon!)
  • If the patient or facility has two usb-enabled cameras, using a video usb mixer can allow for two cameras to be connected to the same platform at once. This has an additional cost, but can be very helpful. An alternative to achieve this dual view could be to connect to the call/tele-session from two computers (or a computer and a tablet), and focus each device’s camera on a different patient view. Security and confidentiality issues will need to be considered here as well.
  • Peripheral digital usb-enabled devices, such as pulse oximeters, ECGs, ultrasounds that can directly connect to a computer and provide remote signals are commercially available, however they are highly expensive and their use as adjunctive tools in dysphagia assessment and treatment has been debated, is still under investigation, or requires extensive training. Several commercial companies offer what are known as telemedicine kits, including some of these peripheral usb-enabled devices. Regular pulse oximeters have been used to enhance the information the clinician receives during a clinical assessment and are more readily available (Ward et al., 2014).

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Thu, 14 May 2020 07:06:00 -0500 en-US text/html https://www.purdue.edu/i-eatlab/part-c-how-to-do-this-technology-and-practical-guidelines/
Killexams : Open Source Power Line Communication

Power Line Communication Filtering

Since we all have wires running throughout our houses to provide mains power, there’s a number of devices that piggyback on mains lines for communication. For his thesis project, [Haris Andrianakis] developed his own power line communication system.

The basic principle of the system is to inject a signal onto the power lines at a much higher frequency than the 50 or 60 Hz of the AC power itself. Using both active and passive filters, the signal can be separated from the AC power and decoded. This system uses frequency-shift keying to encode data. This part is done by a ST7540 modem that’s designed for power line applications. The modem is controlled over SPI by an ATmega168 microcontroller.

[Haris]’ write up goes into detail about some of the challenges he faced, and how to protect the device from the high voltages present. The final result is a remote display for a weigh scale, which communicates over the power line. Schematics, PCB layout, and software are all available.

Tue, 12 Jul 2022 12:00:00 -0500 Eric Evenchick en-US text/html https://hackaday.com/2014/04/05/open-source-power-line-communication/
Killexams : DIY LED Cube For The Masses

No matter what the size or shape of an LED, it brings out the curiosity in every hardware nerd, and is the lifeblood of badge life around the planet. Then there is the LED cube that takes LEDs to all sides — literally. [Tomverbeure] had his own adventure of creating an LED Cube by piecing together Pixel Purses and a Cisco3G Modem.

A quick search for Pixel Purse on the internet reveals a toy lady’s handbag with an LED matrix embedded in one side. [tomverbeure] tore down 12 of these so as to get two panels for each side of his creation. After a little bit of experimenting with PCB corner brackets, he finally got it right and he is able to merge the pieces together to form the cube.

Next comes the brain and the elected device An FPGA from an HWIC-3G-CDMA modem. Cisco routers have extension slots and the HWIC connector on this particular piece had usable GPIOs that connect directly to the Altera FPGA. Inside the FPGA, a RISC-V soft CPU is used to generate images that get processed and dispatched in a hardware block. [Tomverbeure] does a detailed explanation of the implementation for all the blocks which were written in SpinalHDL. The video below shows the project in action.

We love the detail that [Tomverbeure] provides and hope it does not drive up the prices of the pixel purse too much. If you are looking for a more fine pitched cube, look no further than this one. If you end up making your own, be sure to send us a link.

Tue, 12 Jul 2022 12:00:00 -0500 Inderpreet Singh en-US text/html https://hackaday.com/2021/08/22/diy-led-cube-for-the-masses/
Killexams : Guide Infrared Thermal imaging cameras (36) No result found, try new keyword!Applications: Predictive and preventative maintenance Electricity inspections Building diagnostics Veterinarian helper Portable law enforcement Features and benefits: Robust substantial and solid ... Tue, 04 Sep 2018 02:00:00 -0500 text/html https://www.sourcesecurity.com/cctv-cameras/specialist-types--thermal,make.mk-1312-ga.html Killexams : Judson Haims: Is our health care system too big to change?

Health care is a contentious subject matter. Regardless of whether you sit on the right, left, or center of the political aisle, affordable and comprehensive health care is a shared societal concern.

While finding common ground both politically and philosophically has not gone too well, there is a ray of light ahead. An audacious plan is in the inception stage, and it just may work.

If you have not heard, Warren Buffett (Berkshire Hathaway), Jeff Bezos (Amazon) and Jamie Dimon (JPMorgan Chase) have hired surgeon and author Atul Gawande to lead a new business that may very well touch each one of our lives in a more profound way than their respective businesses already do.


Tue, 03 Jul 2018 07:35:00 -0500 en-US text/html https://www.aspentimes.com/opinion/columns/judson-haims-is-our-health-care-system-too-big-to-change/
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