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Ransomware คืออะไร?

Ransomware เป็นมัลแวร์ (Malware) ประเภทหนึ่งที่มีลักษณะการทำงานที่แตกต่างกับมัลแวร์ประเภทอื่น ๆ คือไม่ได้ถูกออกแบบมาเพื่อขโมยข้อมูลของผู้ใช้งานแต่อย่างใด แต่จะทำการเข้ารหัสหรือล็อกไฟล์ ไม่ว่าจะเป็นไฟล์เอกสาร รูปภาพ วิดีโอ ผู้ใช้งานจะไม่สามารถเปิดไฟล์ใด ๆ ได้เลยหากไฟล์เหล่านั้นถูกเข้ารหัส ซึ่งการถูกเข้ารหัสก็หมายความว่าจะต้องใช้คีย์ในการปลดล็อคเพื่อกู้ข้อมูลคืนมา ผู้ใช้งานจะต้องทำการจ่ายเงินตามข้อความ “เรียกค่าไถ่” ที่ปรากฏ   โดยข้อมูลหรือข้อความ “เรียกค่าไถ่” จะแสดงขึ้นหลังไฟล์ถูกเข้ารหัสเรียบร้อยแล้ว จำนวนเงินค่าไถ่ก็จะแตกต่างกันไป โดยเบื้องต้นก็จะมีราคาอยู่ที่ $150–$500 โดยประมาณ และการชำระเงินจะต้องชำระผ่านระบบที่มีความยากต่อการตรวจสอบหรือติดตาม เช่น การโอนเงินผ่านทางอิเล็กทรอนิกส์, Paysafecard หรือ Bitcoin เป็นต้น แต่อย่างไรก็ตาม การชำระเงินก็ไม่ได้หมายความว่าผู้ไม่หวังดีจะส่งคีย์ที่ใช้ในการปลดล็อคไฟล์ให้กับผู้ใช้งาน รูปที่ 1 ตัวอย่างข้อความ “เรียกค่าไถ่” ภาพประกอบจาก Trend Micro   ช่องทางการแพร่กระจายของ Ransomware เพื่อแพร่กระจาย Ransomware โดยเบื้องต้นผู้ไม่หวังดีจะใช้วิธีการผ่านช่องทางต่าง ๆ ดังนี้ แฝงมาในรูปแบบเอกสารแนบทางอีเมล ในกรณีส่วนใหญ่ Ransomware จะมาในรูปแบบเอกสารแนบทางอีเมล โดยอีเมลผู้ส่งก็มักจะเป็นผู้ให้บริการที่เรารู้จักกันดี เช่น ธนาคาร และจะใช้หัวข้อหรือประโยคขึ้นต้นที่ดูน่าเชื่อถืออย่าง “Dear Valued Customer”, “Undelivered Mail Returned to Sender”, “Invitation to connect on LinkedIn.” เป็นต้น ประเภทของไฟล์แนบที่เห็นก็จะเป็น “.doc” หรือ “.xls” ผู้ใช้อาจจะคิดว่าเป็นไฟล์เอกสาร Word หรือ Excel ธรรมดา แต่เมื่อตรวจสอบชื่อไฟล์เต็ม ๆ ก็จะเห็นนามสกุล .exe ซ่อนอยู่ เช่น “Paper.doc.exe” แต่ผู้ใช้จะเห็นเฉพาะ “Paper.doc” และทำให้เข้าใจผิดว่าเป็นไฟล์ที่ไม่เป็นอันตราย รูปที่ 2 แสดงกระบวนการของ Ransomware ที่ถูกส่งมาทางอีเมล   แฝงตัวมาในรูปแบบของ Malvertising (โฆษณา) Ransomware นี้อาจจะมาในรูปแบบของโฆษณา ไม่ว่าจะเป็นโฆษณาที่ฝังมากับซอฟต์แวร์หรือตามหน้าเว็บไซต์ต่าง ๆ เชื่อมโยงไปยังเว็บไซต์อันตรายและอาศัยช่องโหว่ของซอฟต์แวร์ ผู้ใช้ยังสามารถกลายเป็นเหยื่อได้โดยไม่ได้ตั้งใจเพียงเข้าเยี่ยมชมหน้าเว็บที่ถูกผู้ไม่หวังดีเข้ามาควบคุม ตัวอย่างเช่น ถูกดาวน์โหลดโค้ด (Code) ที่เป็นอันตรายผ่านทางโฆษณาแบนเนอร์ใน Flash ดังแสดงในรูปที่ 3 โดย Ransomware มักจะใช้ประโยชน์จากข้อบกพร่องหรือช่องโหว่ด้านความปลอดภัยอื่น ๆ ในเบราว์เซอร์, แอปพลิเคชั่นหรือ ระบบปฏิบัติการ บ่อยครั้งก็มักจะเกิดจากช่องโหว่ในเว็บเบราว์เซอร์, Java และ PDF แต่ช่องโหว่ที่พบมากที่สุดก็คือใน Flash รูปที่ 3 แสดงกระบวนการทำงานของ Ransomware ที่อาศัยช่องโหว่ของซอฟต์แวร์   วิธีป้องกัน Ransomware ทำการสำรองข้อมูล (Backup) เป็นประจำ หากผู้ใช้งานติด Ransomware อย่างน้อยถ้ามีการสำรองข้อมูล (Backup) ก็จะสามารถกู้คืนไฟล์ของคุณได้ และเพื่อป้องกันข้อมูลที่ Backup ถูกเข้ารหัสไปด้วย ผู้ใช้งานควรสำรองข้อมูลลงบนอุปกรณ์สำหรับจัดเก็บข้อมูลภายนอกเครือข่าย (Cloud Storage, External Hard Drive, USB Flash Drive) อัปเดตซอฟต์แวร์ในเครื่องอย่างสม่ำเสมอ การอัปเดตระบบปฏิบัติการและซอฟต์แวร์จะช่วยป้องกันการโจมตีที่ต้องอาศัยช่องโหว่ของซอฟต์แวร์ได้ โดยเฉพาะอย่างยิ่งใน Adobe Flash, Microsoft Silverlight และเว็บเบราว์เซอร์ ควรติดตามและอัปเดตให้เป็น Version ปัจจุบัน ติดตั้งโปรแกรมป้องกันมัลแวร์ (Anti-malware) ลงบนเครื่องคอมพิวเตอร์ เพื่อป้องกันการเข้าถึงเว็บไซต์ที่เป็นอันตรายและตรวจสอบไฟล์ทั้งหมดที่ถูกดาวน์โหลด ควรมีการติดตั้งโปรแกรมป้องกันมัลแวร์ลงบนเครื่องคอมพิวเตอร์ไว้ด้วย ตรวจสอบอีเมลที่เป็นอันตรายเบื้องต้น ผู้ไม่หวังดีมักใช้อีเมลเป็นช่องทางในการหลอกลวงผู้ใช้งานให้หลงเชื่อเปิดหรือดาวน์โหลดเอกสารแนบ ดังนั้น เมื่อเราได้รับอีเมลควรตรวจสอบอีเมลฉบับนั้นให้ดีเสียก่อน ติดตามข่าวสาร ควรติดตามข่าวสารช่องโหว่หรือภัยคุกคามต่าง ๆ รวมถึงศึกษาวิธีการป้องกันเพื่อไม่ให้ตกเป็นเหยื่อของเหล่าผู้ไม่หวังดีและเพื่อความปลอดภัยของตัวผู้ใช้งานเอง   ข้อมูลอ้างอิง – Defending Against Crypto-Ransomware by Netwrix Corporation – Ransomware Definition by Trend Micro – www.it.chula.ac.th

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AXIS : Webinar "Introduction to network audio: The essentials of the network (IP) audio"

Axis network audio portfolio. The power of network (IP) audio helps you to proactively protect people and property in different scenarios. It can also help you to create a pleasant environment to optimize your daily operations. Get started to explore the different opportunities of using Axis network audio solutions that could create a higher security and safety environment and improve the operational efficiency of your business operation. It is easy to install, maintain and scale based on different situational requirements. This webinar will feature: Be familiar with the essentials of the network (IP) audio Explore and understand audio-related topics like audio theory, audio-system design, and network-audio management Engage you through the use of network-audio solutions in different case scenarios Who should attend? For technical / sales professionals in the network video surveillance and audio industries. Webinar details: Date:  Wednesday, 10 May 2022, Tuesday Time: ​​​​​ 9:00AM - 11:00AM (GMT+7) Language: English This training is open to all Axis distributors only and free of charge. Register >> https://shorturl.asia/9vVua  

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How to Use In-Store Analytics to Drive Targeted Marketing

Marketing and advertising professionals are responsible for driving sales revenue and enhancing visitor satisfaction. To improve the customer experience and drive more sales, retailers often strive to have more visibility into customer behaviors. In order to do that, they need accurate customer demographic insights and data-driven strategies to optimize the visitor experience. Video analytics platforms can be used to gather crucial business intelligence regarding visitor footfall and demographic patterns, so that marketing and advertising professionals can improve the shopper experience, use space more efficiently, and optimize the property layout in ways that benefit marketers and – ultimately – guests and customers. Uncover Demographic Intelligence in Video Video analytics should be used by retailers to gather accurate demographic statistics, such as, what percentage of customers are male versus female, or adults versus children? Analyzing this information can help marketers and advertisers build effective, targeted campaigns for audiences that already visit the store, as well as attract new visitors. Whether managing one property or several stores, marketing and advertising professionals can analyze the demographic data at each location or across multiple sites. These demographic insights can help determine the most effective marketing and advertising strategies to reach target audiences, assess the success of marketing and advertising campaigns, and identify new potential audiences. Say a big box retailer with hundreds of sites across the country adds video analytics to their toolbox of audience segmentation and analysis. In doing so, they discover that a much higher percentage of men are visiting their stores than they had thought in the northeast region. With those insights, they can then create a thoughtful campaign targeted towards men in that area. Or conversely, work to understand why more men aren’t visiting their stores in other areas and create campaigns based on their findings. Quantifiable, actionable business intelligence guides marketing and advertising professionals’ decisions about which messages and products are most relevant for their visitors and where to spend marketing and advertising dollars to maximize their return on investment. Track Footfall to Drive Visitor Experience Marketing and advertising professionals can use video analysis platforms to aggregate video data to track onsite foot traffic volume, show navigational shopper patterns via visual heatmaps, and average customer dwell times as well as unique, bounce, and return visits to specific locations. Using that data, retailers can assess whether in-store hotspots due to are popular items or displays, or traffic bottlenecks. This business intelligence can not only help the store optimize site layout so that traffic flows easily, but it is invaluable for making data-driven decisions about where to place advertisements and displays to enhance customer experiences and encourage return visits to the store. Additionally, insights like people-count reports can indicate the average number of people in a checkout counter queue on certain days of the week, certain holidays, or time of day. This information can help marketing and advertising professionals make critical decisions about when to launch or refresh campaigns. Build Brand Loyalty through Enhanced Experiences The in-store experience has a strong influence on customer loyalty and retention and, therefore, in-store analytics are critical for managing personalized and enhanced experiences. From crowd and queue management – enabled by real-time people-count alerting and dashboards for uncovering trends – as well as visibility into sales associate activity and engagement, marketers can better understand the in-store experience and optimize it through data-driven strategies. Data from people-count reports can be correlated with point-of-sale systems and sales data to identify in-store shopping cart abandonment. By translating video metadata into business intelligence dashboards and visualizations, marketers and advertisers can work to understand the cause for abandonment and work to counteract that with targeted in-store displays and campaigns. Analyzing unique, return and bounced visit rates can help marketers understand what displays and advertisements draw interest, encourage a customer to enter the store and – through correlating visitor statistics with point of sale data – ultimately drive conversions.

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The new FLEXIDOME panoramic 5100i cameras support predictive solutions with built-in AI

The new FLEXIDOME panoramic 5100i cameras combine 360-degree overviews with actionable insights for wide-area coverage applications, without any blind spots. The new FLEXIDOME panoramic 5100i camera range includes indoor and outdoor IR models offering 6- or 12-megapixel resolution with a stereographic fish-eye lens. They take the evolution of AI further by pairing sound with video to elevate situational awareness. A built-in microphone array with three digital microphones prepares the cameras for future audio analytics, enabling operators to gain a complete overview of their monitoring areas and become more proactive in identifying and responding to threats. Like all Bosch cameras, the new panoramic cameras combine built-in AI with the Internet of Things (IoT), offering the ability to convert video data into valuable insights easily. Remote Portal fully supports these AIoT video cameras, enabling system integrators to remotely perform services for customers such as changing configuration settings and installing firmware updates to ensure systems meet the highest reliability standards and support sustainable business practices. Built-in AI supports predictive solutions in a range of environments   The new panoramic cameras feature Intelligent Video Analytics (IVA), a form of AI, and Camera Trainer based on machine learning to support predictive solutions in a variety of commercial environments. In retail applications, the compact size and low profile of the panoramic cameras can deliver insights that help recognize suspicious behavior and track a person through an entire aisle or from the cashier to the store exit. In shopping malls, a single panoramic camera can monitor two opposite storefronts in high resolution. In schools and universities, panoramic cameras can give a complete overview and identify unusual situations in hallways, corridors, cafeterias, and other areas. Taking AI further with audio analytics As the first Bosch cameras to feature audio analytics based on deep neural networks, the FLEXIDOME panoramic 5100i cameras contain a built-in microphone array with three digital microphones to capture audio from any direction. This capability prepares the cameras for future audio AI, enabling them to give meaning to the sounds they hear and trigger relevant alerts concerning the approximate location where the sound originated. The camera’s AI-based software which will become available with a future firmware release is trained to detect the unique audio signatures of gunshots and glass breaking while ignoring false positives, like slamming car doors or banging carts. Audio AI enables security personnel to respond quickly and appropriately while protecting privacy since no audio information is recorded or leaves the camera. At the same time an audio alarm occurs, a trigger to a nearby moving camera prompts it to focus near the sound and automatically track any moving objects in the scene. Thanks to data from audio and video sensors in the FLEXIDOME panoramic 5100i cameras, Bosch takes AI further by converting data into actionable insights that help users anticipate unforeseen events and prevent them from happening.   Complete coverage in a single image without blind spots   By offering a detailed overview image of an area, the panoramic cameras enable users to simultaneously zoom in on an object of interest without losing the bigger picture. The close-up images are transmitted in a separate channel so that both overview and detail can be viewed at the same time – and all in high resolution. With 12-megapixel sensor resolution at a frame rate of 30 frames per second, these cameras provide a 360-degree overview enabling the easy capture of objects to significantly improve the quality of a surveillance operation. Perfect exposure to capture objects of interest is achieved in every situation by Intelligent Auto Exposure. It automatically adjusts the exposure of the camera by dynamically adapting to the changing light conditions to deliver excellent front light and backlight compensation. Ease of installation Designed for easy installation and mounting, the panoramic cameras also offer twist and click installation to reduce installation time. A rotatable imager enables easier alignment. For applications when it’s necessary to look down along the wall, the cameras can be easily mounted and tilted on a wall to achieve a 180-degree view.   A solution built on trust   The FLEXIDOME panoramic 5100i cameras are secure by design. They offer a systematic approach centered on a built-in Secure Element hardware with Trusted Platform Module (TPM) functionality, safely storing all certificates and cryptographic keys needed for authentication and encryption. The approach offers extensive user management to ensure only authorized users have access to data, supports a Public Key Infrastructure set-up, and provides software sealing to detect changes in the cameras’ configuration settings. The Secure Element also supports RSA encryption key lengths of up to 4096 bits, ensuring data safety well beyond 2030. More detail >> https://www.boschsecurity.com        

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BRIEFCAM EMPOWERS THE BRIC WITH VIDEO INTELLIGENCE

CENTRALIZING CRITICAL VIDEO INTELLIGENCE For over thirty years, the Brussels Regional Informatics Center (BRIC) has been providing critical IT services throughout the Brussels-Capital Region in Belgium, supporting government operations. The BRIC is responsible for developing, installing and maintaining solutions for the area, including business applications, a fiber optics network, data centers and video surveillance infrastructure. In 2014, the Brussels regional government decided to maximize its investments in video and centralize in a single platform the footage from six local police zones; the Metro system; and Bruxelles Mobilité, the organization responsible for maintaining and improving road infrastructure. Until that point, all of these institutions were individually managed by different parties, and the regional government wanted to facilitate streamlined information sharing between these organizations to accelerate response in emergency situations and drive ongoing cooperation. To enable this, in 2015 the BRIC created, piloted and launched the Brussels regional video surveillance platform, integrating the Genetec Security Center Video Management System (VMS) as well as an EMC Isilon storage solution for managing and recording video data from about 2500 cameras. Each of the cooperating organizations then integrated into the Brussels regional video surveillance platform. In so doing, the BRIC essentially transformed each partner dispatching room into a sophisticated security center. Based on individualized access rights and in compliance with GDPR, each operator can manage its organization’s own images, but, when authorized by the Belgian Data Protection Authority, the operator can also access and utilize the shared images sourced from the other parties. Invested in modernizing and maintaining the innovativeness of the regional video platform, the BRIC continually investigates technologies to integrate and meet the evolving needs of the solution’s stakeholders – from the technology operators to the locals benefitting from increased public safety. In 2016, the BRIC started evaluating video content analytics solutions to enhance the platform and quickly identified the BriefCam® video analytics solution as a strategic investment. When the BRIC learned of the many high-profile national security cases worldwide where BriefCam has been a critical investigation driver, the organization was convinced that BriefCam’s video content analytics platform would be the ideal complement to its existing video surveillance investments. TRANSFORMING VIDEO SURVEILLANCE AND SECURITY The BRIC has been gradually expanding its BriefCam implementation over the years as the demand for video analysis to drive accelerated investigations, enhanced situational awareness and real-time response grows throughout the region. Based on Deep Learning and artificial intelligence techniques, BriefCam’s video content analytics platform transforms video into actionable intelligence by analyzing video to detect objects that appear, identify, extract and classify them. Ultimately these objects are indexed, making them searchable, actionable and quantifiable for the organizations involved in the BRIC video project. “BriefCam is an easy-to-use and very powerful solution, which allows police officers to work a lot faster and remain focused,” explains Christian Banken, the Director of the Brussels-Capital Region Video Surveillance Program. While law enforcement cannot disclose specific cases where BriefCam has been applied, the police rely on BriefCam to conserve time and resources and to pinpoint critical evidence for solving investigations. “The police officers using the software feel that they’ve won back time – time they can then invest in other investigation activities, streamlining the whole process of closing a case,” notes Banken. With its extensive data center resources, high server performance and vast storage capacity, the BRIC video platform can easily support BriefCam’s software and leverage it to simultaneously work on multiple investigations.” EMPOWERING INTEGRATION EVOLUTION The BRIC continues to expand its BriefCam implementation, enjoying the solution’s ability to flexibly scale to address changing threats and requirements. Ahead of the regional Real Time Intelligence (RTI) Center roll out, the BRIC already realizes how BriefCam will continue to empower local law enforcement and increase public safety with its real-time alerting functionality based on powerful object detection and customized rule configurations. In the future, BriefCam’s fully embedded Research platform, which aggregates and visualizes the video data collected over time, might be used to deliver critical statistics for driving traffic optimization, such as vehicle types and quantities, directional traffic data and traffic flow insights. With a comprehensive and extensible video analytics solution, the Brussels-Capital Region local government can continue to enhance public safety and empower local law enforcement agencies as its needs and resources evolve. Download the BriefCam Empowers the BRIC with Video Intelligence Case Study (English) Download the BriefCam Empowers the BRIC with Video Intelligence Case Study (French)

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How Video Analytics Drives Centralized Security Monitoring & Management

Businesses and organizations with multiple sites face various security challenges. From theft and data breaches, to missing persons and medical incidents, retailers, restaurants, hotels and workplaces are among those with unique security needs. However, all could benefit greatly from having their video analytics and intelligence centrally managed at a central hub. By centralizing security management from all sites, these organizations can glean cross-site intelligence and be proactive about their security plans. Through a central hub, businesses with multiple, distributed locations can view aggregate data from all remote sites to uncover trends across locations, boost real-time alerting and optimize operations and response. Quickly review hours of video When a shopping mall is attempting to locate a missing child, the video captured on-site is invaluable. With video analytics, a central security hub can review hours of video from multiple locations within the mall in just minutes to rapidly pinpoint objects of interest. Video content analytics software powered by deep learning and artificial intelligence is able to identify, classify and index objects in surveillance video footage. This enables those managing the central hub to conduct filtered searches based on criteria such as gender, clothing type and color, direction of travel, and more. A video analytics operator can create a digital watchlist that contains a still photo or video image of the missing person to drive live alerts when a potential match for that face is detected, as well as filtered searches of archived video footage to locate where and when that missing person was last seen on the premises. The information that the central hub provides can help mall security guards as well as local law enforcement accelerate their investigation by giving them descriptors of what to be on the lookout for and in what general direction or area. Following the incident, the mall’s parent company can study the on-site response and use that information to enhance their overall training and safety procedures at all locations. Leverage advanced analytics for real-time notifications Through video analytics, organizations can receive real-time alert notifications from across all locations, as well as visualize business intelligence from multiple sites into centralized dashboards. Real-time alert notifications can be configured to notify the hub manager when a person or object appears in frame at a designated time. Banks often have multiple branches across a region or even the country. Given the nature of their sensitive and secure business, banks could leverage a video analytics hub to trigger alerts that brings relevant events to the forefront. For instance, a rule-based real-time alert could be configured to tell the hub manager when there are a certain number of people in the vault, or if they are there before or after business hours. These types of alerts allow for the quick review and accurate assessment of events. Derive insights for data-driven decision making While organizations need the ability to record video locally on-site, they also seek to gain valuable insights through advanced video analytics across sites. By using a central hub to manage their video surveillance and analytics, a chain of restaurants that has experienced robberies at multiple locations can compare insights and make necessary improvements. Did those robberies have anything in common? By analyzing the data, they find that many of their stores have poorly lit doorways therefore enabling individuals to access fairly unnoticed. This can help the restaurant chain make physical improvements, like installing motion-sensor lighting. Accidents and medical incidents are not uncommon occurrences. Although video surveillance may capture some incidents, manual forensic video review is time-consuming and can be error prone. Video analytics technology enables a central hub to review video footage rapidly and accurately across multiple cameras and filter video to pinpoint relevant objects in video. A resort guest may have been found alone and unresponsive; with the use of filters, video analytics can quickly identify when that person experienced a medical episode and therefore unlock clues to what happened. By examining and comparing medical incidents across multiple resorts, the hotel chain can make operational decisions to enhance their response like, adding more AED devices around the property or making sure secluded areas are checked often. Similarly, workplaces experiencing accidents can use video analytics to determine the root cause of the accidents and therefore change their practices to avoid in the future or enhance their training programs.

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