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Signal
Signal is a free and open source messaging app that offers end-to-end encryption for secure communication. Developed by Signal Foundation, the app allows users to make phone calls, send text messages, and share media files with others without worrying about their conversations being intercepted or read by any third-party. As a non-profit organization, Signal puts privacy at the forefront of its mission and does not collect user data or display ads. Signal has gained popularity in recent years because of its focus on privacy and security, and has even been recommended by cybersecurity experts and privacy advocates for secure communication.
In this Signal review, we’ll look at the capabilities, usability, and security that Signal offers. Signal is truly impressive, so let’s cut the chatter and dig in to the review. As Signal points out,restoreprivacy.comUsing the Internet for all encrypted communication, Signal comes highly recommended by some of the top privacy and security advocates.
Send and receive high-quality messages, take part in HD voice/video chats, and discover a growing list of additional services that will keep you connected. Users like you help with development.get-signalapp.comDownload Signal App- Every day, millions of users use Signal to communicate for free and instantly from anywhere on the planet.
The app is an alternative to WhatsApp and offers high privacy protection with a more apt data security framework. These triggered many global tech heads to call people to switch to Signal Messenger.digitbin.comAll communications between Signal users are automatically end-to-end encrypted and encryption keys generated are stored at the endpoints by users, not by servers.
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EncryptedSite is Encrypted
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CountryHosted in United States
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Latitude\Longitude37.751 / -97.822 Google Map
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Traffic rank#8,083 Site Rank
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Site age23 yrs old
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Site Owner informationWhois info
Website is Safe
Site is not blacklisted
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Developer(s)Signal Technology Foundation,Signal Messenger LLC,and contributors
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Initial release29 July 2014
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Repositorygithub.com/signalapp/Signal-Android
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Operating systemAndroid 4.4,or later,iOS 12.2,or later,Windows 7,or later (64-bit),macOS 10.10,or later,Linux distributions,supporting,APT
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TypeEncrypted,voice calling,,,video calling,and,instant messaging
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LicenseAndroid:,GPL-3.0-only,iOS:,GPL-3.0-only,Desktop:,AGPL-3.0-only,Server:,AGPL-3.0-only
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Android4.59.7 / 4 May 2020; 25 January 2021; 27 January 2020; 10 June 2021; 10 August 2021; 3 August 2021; 2 September 2021; 6 January 2022; 28 March 2022; 6 April 2022; 15 April 2022; 26 April 2022; 11 May 2022; 17 May 2022; 25 May 2022; 28 May 2022; 2 June 2022; 12 July 2022; 21 July 2022
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IOS5.46 / 21 July 2022
Traffic rank
#8,083
#8,083
Site age
23 yrs
23 yrs
Location
United States
United States
Popular Questions for Signal
Newest job postings for Signal
via LinkedIn
posted_at: 19 hours agoschedule_type: Full-time
Summary
The person in this position repairs, maintains, and tests signal systems and inspects the construction and installation of signal systems. The signal systems include automatic-block signal systems, traffic-control systems, train-stop, train-control, and cab-signal systems; rail-highway grade-crossing protection, automatic classification yards, hot-box detectors, broken-flange detectors... and other similar devices, appliances, and systems.
Responsibilities
•
Summary
The person in this position repairs, maintains, and tests signal systems and inspects the construction and installation of signal systems. The signal systems include automatic-block signal systems, traffic-control systems, train-stop, train-control, and cab-signal systems; rail-highway grade-crossing protection, automatic classification yards, hot-box detectors, broken-flange detectors... and other similar devices, appliances, and systems.
Responsibilities
• Inspect and test signal circuitry, using standard electrical and/or electronic testing equipment
• Inspect, test, and maintain batteries to ensure proper operation of signals
• Inspect, test, and maintain signal equipment such as grade-crossing warning devices, power switches, and switch air unit controllers
• Compile reports including mileage or track inspected, tests performed, and repairs made; replace required equipment when needed
• Operate rail or highway vehicle for transportation to wayside locations to install, inspect, test, and maintain or repaired grade-crossing warning systems, signals, and signal equipment
• Manage other projects and perform other duties as assigned
Required Skills And/Or Experience
• Ability to read schematic diagrams in maintenance and instruction manuals and to understand mechanical principles
Required Education And/Or Credentials
• High school diploma or GED with one to three years of related technical experience/training; or an equivalent combination of education, experience, and training required
• Associate's degree with one to three years of related technical experience/training or an equivalent combination a plus
This position is employed by the specific entity set forth in the job posting.
Genesee & Wyoming Inc. and its subsidiary companies do not discriminate in employment on the basis of race, color, religion, sex (including pregnancy and gender identity), national origin, political affiliation, sexual orientation, marital status, disability, genetic information, age, membership in an employee organization, retaliation, parental status, military service, or any other protected status under federal, state or local laws.
Track, Structures & Signals Show more details...
The person in this position repairs, maintains, and tests signal systems and inspects the construction and installation of signal systems. The signal systems include automatic-block signal systems, traffic-control systems, train-stop, train-control, and cab-signal systems; rail-highway grade-crossing protection, automatic classification yards, hot-box detectors, broken-flange detectors... and other similar devices, appliances, and systems.
Responsibilities
• Inspect and test signal circuitry, using standard electrical and/or electronic testing equipment
• Inspect, test, and maintain batteries to ensure proper operation of signals
• Inspect, test, and maintain signal equipment such as grade-crossing warning devices, power switches, and switch air unit controllers
• Compile reports including mileage or track inspected, tests performed, and repairs made; replace required equipment when needed
• Operate rail or highway vehicle for transportation to wayside locations to install, inspect, test, and maintain or repaired grade-crossing warning systems, signals, and signal equipment
• Manage other projects and perform other duties as assigned
Required Skills And/Or Experience
• Ability to read schematic diagrams in maintenance and instruction manuals and to understand mechanical principles
Required Education And/Or Credentials
• High school diploma or GED with one to three years of related technical experience/training; or an equivalent combination of education, experience, and training required
• Associate's degree with one to three years of related technical experience/training or an equivalent combination a plus
This position is employed by the specific entity set forth in the job posting.
Genesee & Wyoming Inc. and its subsidiary companies do not discriminate in employment on the basis of race, color, religion, sex (including pregnancy and gender identity), national origin, political affiliation, sexual orientation, marital status, disability, genetic information, age, membership in an employee organization, retaliation, parental status, military service, or any other protected status under federal, state or local laws.
Track, Structures & Signals Show more details...
via ORNL Jobs - Oak Ridge National Laboratory
posted_at: 12 days agoschedule_type: Full-time
Requisition Id 10081
Level: RP02...
Overview:
We are seeking an Electrical Engineer or Scientist who will focus on software and hardware development and integration, particularly for signal processing applications. This position resides in the Cyber Sensing and Analytics Group in the Cyber Resilience & Intelligence Division, National Security Sciences Directorate at Oak Ridge National Laboratory (ORNL). As part of our research team, you will perform
Requisition Id 10081
Level: RP02...
Overview:
We are seeking an Electrical Engineer or Scientist who will focus on software and hardware development and integration, particularly for signal processing applications. This position resides in the Cyber Sensing and Analytics Group in the Cyber Resilience & Intelligence Division, National Security Sciences Directorate at Oak Ridge National Laboratory (ORNL). As part of our research team, you will perform research and development to identify candidate algorithms and implementations (both software and hardware) to process multi-channel signals in different environments across the Department of Energy (DOE), Department of Defense (DoD), and Intelligence Community (IC) mission areas. Your role will include side-channel analysis, radio frequency and acoustic signal analysis, and active/passive systems to extract and learn information from both fortuitous and designed signals. Our specific focus is towards the development of signal processing and analysis for cyber-physical systems security capabilities.
Major Duties/Responsibilities:
• Review literature on algorithmic approaches and implementation
• Perform data acquisition, pre-processing, information extraction, and post-processing using existing algorithms
• Rapid prototyping of new signal processing algorithms & systems through the design, programming, testing, and demonstration stages
• Design and develop robust, user-friendly signal processing systems at higher TRLs for field deployments
• Work in a collaborative environment and represent ORNL well to external entities
Basic Qualifications:
• A Ph.D. or M.S. or B.S degree in Electrical or Computer Engineering with coursework in signal processing and/or communications theory
• Knowledge of fundamental algorithms for signal decomposition, noise reduction, and signal detection/classification
• Understanding of signal processing algorithms sufficient to explore and implement new ideas and concepts to solve niche problems
• Experience with transducers/sensors and data acquisition platforms
• Experience with software tools and packages such as Python/NumPy, MATLAB, Julia, R, C, or C++
• Ability to proactively work independently and as part of a team
• Demonstrated ability and willingness to acquire new knowledge and learn new skills
• Multiple peer-reviewed publications in reputable academic conferences & journals
• Superior interpersonal, verbal, and written communication skills
Preferred Qualifications:
• Experience with machine learning (ML) and/or artificial intelligence
• Experience with GPU-accelerated ML frameworks such as TensorFlow or PyTorch
• Motivated self-starter with the ability to work independently and to participate creatively in collaborative teams across the laboratory
• Ability to function well in a fast-paced research environment, set priorities to accomplish multiple tasks within deadlines, and adapt to ever-changing needs
Special Requirements:
SCI clearance: This position requires the ability to obtain and maintain an SCI clearance from the US Department of Energy. As such, this position is a Workplace Substance Abuse (WSAP) testing designated position. WSAP positions require passing a pre-placement drug test and participation in an ongoing random drug testing program. As well, willingness to undergo a polygraph examination is required to maintain an SCI clearance.
This position will remain open for a minimum of 5 days after which it will close when a qualified candidate is identified and/or hired.
We accept Word (.doc, .docx), Adobe (unsecured .pdf), Rich Text Format (.rtf), and HTML (.htm, .html) up to 5MB in size. Resumes from third party vendors will not be accepted; these resumes will be deleted and the candidates submitted will not be considered for employment.
If you have trouble applying for a position, please email ORNLRecruiting@ornl.gov.
ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply. UT-Battelle is an E-Verify employer Show more details...
Level: RP02...
Overview:
We are seeking an Electrical Engineer or Scientist who will focus on software and hardware development and integration, particularly for signal processing applications. This position resides in the Cyber Sensing and Analytics Group in the Cyber Resilience & Intelligence Division, National Security Sciences Directorate at Oak Ridge National Laboratory (ORNL). As part of our research team, you will perform research and development to identify candidate algorithms and implementations (both software and hardware) to process multi-channel signals in different environments across the Department of Energy (DOE), Department of Defense (DoD), and Intelligence Community (IC) mission areas. Your role will include side-channel analysis, radio frequency and acoustic signal analysis, and active/passive systems to extract and learn information from both fortuitous and designed signals. Our specific focus is towards the development of signal processing and analysis for cyber-physical systems security capabilities.
Major Duties/Responsibilities:
• Review literature on algorithmic approaches and implementation
• Perform data acquisition, pre-processing, information extraction, and post-processing using existing algorithms
• Rapid prototyping of new signal processing algorithms & systems through the design, programming, testing, and demonstration stages
• Design and develop robust, user-friendly signal processing systems at higher TRLs for field deployments
• Work in a collaborative environment and represent ORNL well to external entities
Basic Qualifications:
• A Ph.D. or M.S. or B.S degree in Electrical or Computer Engineering with coursework in signal processing and/or communications theory
• Knowledge of fundamental algorithms for signal decomposition, noise reduction, and signal detection/classification
• Understanding of signal processing algorithms sufficient to explore and implement new ideas and concepts to solve niche problems
• Experience with transducers/sensors and data acquisition platforms
• Experience with software tools and packages such as Python/NumPy, MATLAB, Julia, R, C, or C++
• Ability to proactively work independently and as part of a team
• Demonstrated ability and willingness to acquire new knowledge and learn new skills
• Multiple peer-reviewed publications in reputable academic conferences & journals
• Superior interpersonal, verbal, and written communication skills
Preferred Qualifications:
• Experience with machine learning (ML) and/or artificial intelligence
• Experience with GPU-accelerated ML frameworks such as TensorFlow or PyTorch
• Motivated self-starter with the ability to work independently and to participate creatively in collaborative teams across the laboratory
• Ability to function well in a fast-paced research environment, set priorities to accomplish multiple tasks within deadlines, and adapt to ever-changing needs
Special Requirements:
SCI clearance: This position requires the ability to obtain and maintain an SCI clearance from the US Department of Energy. As such, this position is a Workplace Substance Abuse (WSAP) testing designated position. WSAP positions require passing a pre-placement drug test and participation in an ongoing random drug testing program. As well, willingness to undergo a polygraph examination is required to maintain an SCI clearance.
This position will remain open for a minimum of 5 days after which it will close when a qualified candidate is identified and/or hired.
We accept Word (.doc, .docx), Adobe (unsecured .pdf), Rich Text Format (.rtf), and HTML (.htm, .html) up to 5MB in size. Resumes from third party vendors will not be accepted; these resumes will be deleted and the candidates submitted will not be considered for employment.
If you have trouble applying for a position, please email ORNLRecruiting@ornl.gov.
ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply. UT-Battelle is an E-Verify employer Show more details...
via LinkedIn
posted_at: 8 days agoschedule_type: Part-time
Description
Responsible for performing FRA and UPRR required signal system testing. They lead in the installation, repair, troubleshooting, and maintenance of various railroad signals and grade crossing warning devices.
Required Certifications
For this position, you will be required to become a Union Pacific certified driver during your probationary period. To become certified, you must meet the following Motor Vehicle and Medical Requirements:
•
Description
Responsible for performing FRA and UPRR required signal system testing. They lead in the installation, repair, troubleshooting, and maintenance of various railroad signals and grade crossing warning devices.
Required Certifications
For this position, you will be required to become a Union Pacific certified driver during your probationary period. To become certified, you must meet the following Motor Vehicle and Medical Requirements:
• Have valid driver's license
• Have an acceptable driving record per your Motor Vehicle Record (MVR)
Medical Requirements
Must meet the medical requirements (also called physical qualifications) for commercial motor vehicle drivers as specified by the US Federal Motor Carrier Safety Administration (FMCSA). The FMCSA physical qualifications for drivers can be found on the FMCSA homepage. Health and Medical Services at Union Pacific Railroad will make the final determination on whether or not an individual meets the FMCSA medical... qualifications, and may add additional medical requirements to assure the person can safety perform job tasks, with or without accommodation.
Accountabilities
Inspect signal circuitry, equipment, and systems for problems and defects Test signal circuitry, equipment, and systems for FRA reporting Troubleshoot malfunctions Build and dismantle signal crossing warning device equipment Maintain, repair, and replace signal communication circuitry, systems, and components Plan, organize, and track information and activities; Direct the work of others Responsible for digging holes and trenches for installation Understand and follow company and industry safety rules, practices, and procedures Develop and maintain positive working relationships with coworkers, supervisors, contractors and/or customers and effectively handle conflict situations Ensure compliance with all railroad rules and regulations for safety, operations and Federal Railroad Administration (FRA) Other duties as assigned by supervisor
Qualifications
Required
Computer literate and have basic keyboarding computer skills Proficient communication skills Ability to speak English in a clear, concise manner to communicate with coworker(s) and supervisor(s) Able to work with information in print or on a computer Able to effectively and accurately understand, interpret, reference, evaluate, organize, and record non-technical and technical information Valid driver's license Able to understand and apply safety rules, practice safe work habits, identify safety risks and avoid potentially risky behaviors and situations Able to effectively work independently and in group settings Candidates for this position must pass a pre-employment test in English before being allowed to interview. The number of candidates who pass the test and are granted an interview is based upon hiring needs. Click here to see a sample of the Engineering & Telecom Test. Candidates must qualify on a Physical Ability Test (PAT) prior to employment. Click here for a description of the Physical Abilities Test
Preferred
An Associate's degree in electrical engineering or electronic technology or higher Completed a formal electrical training program (e.g. training presented by a community college, trade/vocational school, or military) Certificate in electricity or electronics or equivalent education Experience working with, on and around moving heavy equipment Experience with railroad signaling Experience in construction Experience operating construction equipment such as a backhoe, trencher, crane, etc Experience working in an environment that requires you to wear personal protective equipment such as shock and arc flash clothing, safety glasses, safety boots, hard hats and hearing protection Knowledge in the electrical field that can be demonstrated by providing a work history incluing contacts and documentation of apprentice or jouneyman training or experience
Physical Requirements
Able to remain standing for more than one-half of every work day with an opportunity to periodically change position for comfort
Able to make frequent coordinated hand movements to grasp, place, or move objects
Able to perform physically strenuous work
Able to occassionally walk, climb, and maintain balance on ladders, poles, and equipment in a safe manner
Must have normal color vision
Must be able to detect and interpret different visual color signals and displays, and identify and determine the speed of moving objects at near or far distances
Able to occasionally lift and carry objects weighing up to 65 lbs
Able to occasionally push and pull objects weighing up to 119 lbs
Able to frequently walk to access work site
Able to occasionally bend, stoop, and kneel
Work Conditions
Apply only to those locations where you are prepared to live and work
Experience working various shifts, overtime, holidays, and weekends
Willingness to practice safe work habits
Agree to wear personal protective equipment such as safety glasses, safety boots, hard hats, and hearing protection where the company requires
Work at heights of 20 feet or more
Work in confined spaces
Willingness to work outside regardless of weather conditions
Work Conditions: Operate company vehicles and drive throughout geographic territory; Work with machines, tools, vehicles, and equipment
Authorized to work in the United States without company sponsorship
To the extent required by federal law and/or collective bargaining agreement, membership to the respective labor union is required. The union agreement dictates the pay rate and cannot be individually negotiated. Monthly dues are the responsibility of the employee Show more details...
Responsible for performing FRA and UPRR required signal system testing. They lead in the installation, repair, troubleshooting, and maintenance of various railroad signals and grade crossing warning devices.
Required Certifications
For this position, you will be required to become a Union Pacific certified driver during your probationary period. To become certified, you must meet the following Motor Vehicle and Medical Requirements:
• Have valid driver's license
• Have an acceptable driving record per your Motor Vehicle Record (MVR)
Medical Requirements
Must meet the medical requirements (also called physical qualifications) for commercial motor vehicle drivers as specified by the US Federal Motor Carrier Safety Administration (FMCSA). The FMCSA physical qualifications for drivers can be found on the FMCSA homepage. Health and Medical Services at Union Pacific Railroad will make the final determination on whether or not an individual meets the FMCSA medical... qualifications, and may add additional medical requirements to assure the person can safety perform job tasks, with or without accommodation.
Accountabilities
Inspect signal circuitry, equipment, and systems for problems and defects Test signal circuitry, equipment, and systems for FRA reporting Troubleshoot malfunctions Build and dismantle signal crossing warning device equipment Maintain, repair, and replace signal communication circuitry, systems, and components Plan, organize, and track information and activities; Direct the work of others Responsible for digging holes and trenches for installation Understand and follow company and industry safety rules, practices, and procedures Develop and maintain positive working relationships with coworkers, supervisors, contractors and/or customers and effectively handle conflict situations Ensure compliance with all railroad rules and regulations for safety, operations and Federal Railroad Administration (FRA) Other duties as assigned by supervisor
Qualifications
Required
Computer literate and have basic keyboarding computer skills Proficient communication skills Ability to speak English in a clear, concise manner to communicate with coworker(s) and supervisor(s) Able to work with information in print or on a computer Able to effectively and accurately understand, interpret, reference, evaluate, organize, and record non-technical and technical information Valid driver's license Able to understand and apply safety rules, practice safe work habits, identify safety risks and avoid potentially risky behaviors and situations Able to effectively work independently and in group settings Candidates for this position must pass a pre-employment test in English before being allowed to interview. The number of candidates who pass the test and are granted an interview is based upon hiring needs. Click here to see a sample of the Engineering & Telecom Test. Candidates must qualify on a Physical Ability Test (PAT) prior to employment. Click here for a description of the Physical Abilities Test
Preferred
An Associate's degree in electrical engineering or electronic technology or higher Completed a formal electrical training program (e.g. training presented by a community college, trade/vocational school, or military) Certificate in electricity or electronics or equivalent education Experience working with, on and around moving heavy equipment Experience with railroad signaling Experience in construction Experience operating construction equipment such as a backhoe, trencher, crane, etc Experience working in an environment that requires you to wear personal protective equipment such as shock and arc flash clothing, safety glasses, safety boots, hard hats and hearing protection Knowledge in the electrical field that can be demonstrated by providing a work history incluing contacts and documentation of apprentice or jouneyman training or experience
Physical Requirements
Able to remain standing for more than one-half of every work day with an opportunity to periodically change position for comfort
Able to make frequent coordinated hand movements to grasp, place, or move objects
Able to perform physically strenuous work
Able to occassionally walk, climb, and maintain balance on ladders, poles, and equipment in a safe manner
Must have normal color vision
Must be able to detect and interpret different visual color signals and displays, and identify and determine the speed of moving objects at near or far distances
Able to occasionally lift and carry objects weighing up to 65 lbs
Able to occasionally push and pull objects weighing up to 119 lbs
Able to frequently walk to access work site
Able to occasionally bend, stoop, and kneel
Work Conditions
Apply only to those locations where you are prepared to live and work
Experience working various shifts, overtime, holidays, and weekends
Willingness to practice safe work habits
Agree to wear personal protective equipment such as safety glasses, safety boots, hard hats, and hearing protection where the company requires
Work at heights of 20 feet or more
Work in confined spaces
Willingness to work outside regardless of weather conditions
Work Conditions: Operate company vehicles and drive throughout geographic territory; Work with machines, tools, vehicles, and equipment
Authorized to work in the United States without company sponsorship
To the extent required by federal law and/or collective bargaining agreement, membership to the respective labor union is required. The union agreement dictates the pay rate and cannot be individually negotiated. Monthly dues are the responsibility of the employee Show more details...
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