Tech-Art

Spy Max (Spyware) || Newly found malwares in 2020 || Explained SpyMax: It belongs to surveillance ware family, SpyMax was found targeting Libyan Individuals. It masqueraded as “Corona Live 1.1” to steal photos, media, files, Device location, as well as permission to take pictures and record videos of individuals from infected phone.

Hackers Hacked Israeli Water supply Company || Jerusalem Electronic Army Targeted Israel`s water supply and treatment || Latest Tech News A Security alert sent by Israeli National Cyber-Directorate (INCD), the agency is urging personnel at companies active in energy and water sectors to change passwords of systems that are connected to internet. If passwords can`t be changed, the agency recommended taking systems offline. The INCD alert was issued on 23-04-2020. According to a report of Ynet, the water Authority told companies to change passwords “with emphasis on operational systems and chlorine control devices,” believed to have been targeted the most. This attack was done by Jerusalem Electronic Army (J.E.A). It is a group of Hacktivists. This group has presence on all social media sites such as Facebook, Instagram, WhatsApp, Twitter, and Telegram where they have posted the screenshots of systems which they claim to have hacked.

Shade Ransomware Shuts down || Shade ransomware releases nearly 750K Decryption keys when shuts down || Latest Tech News Its operators have shut down their all operations and releases nearly 750,000 decryption keys and apologized from their victims for harm they caused. The operators behind the shade ransomware (Troldesh) were operating it since around 2014. Unlike other ransomware families that specially avoid encrypting victims in Russia and other CIS countries. Shade mainly targeted peoples of Russia and Ukraine. According to Michael Gillespie, the creator of ransomware identification site ID Ransomware submission related to Shade Ransomware has been steady over the years until the end of 2019 when it started to dwindle.

Symptoms of Computer infected with Malware || Explained There are thousands of Symptoms of a computer infected with malware so they all are difficult to cover. The following are the some common symptoms that a victim may experience when he/she will use his/her computer:   Ø Computer does not start or it reboots automatically when it is on.   Ø Different types of error messages appear on screen.   Ø Registry files are deleted or thousands are created.   Ø Web Browser such as chrome, Mozilla Firefox do not run in a normal way. It loads websites slow.   Ø New files and folders are created on Hard disk without any human action   Ø Hard Disk Activity is noticed   Ø Shortcuts of different files or folders are created.

Data Transmission Terminologies || Explained The following are some Data Transmission Terminologies:   Ø Data Rate   Ø Baud Rate   Ø Bandwidth   Ø Signal-to-Noise Ratio Bandwidth: It is an overall Data Transmission Capacity of a medium or channel. It represents the amount of data that passes through a network connection per unit of time. It is measured in bits/Second or B/S Baud Rate: Baud Rate is the rate of change of digital signals per second during data communication. An electrical signal can have two or more than two states to represent binary digits 0 and 1 Data Rate: Data Rate is the speed with which data can be transmitted from one device to another. It is generally measured in Kbps and Mbps Signal-to-Noise Ratio: Signal to noise ratio is the ratio of signal power to the noise power that causes error in data transmission. If a transmission line has Signal-to-noise ratio higher than 1:1 so it means that the more Signal Transmiss...

Characteristics of a Good Communication System || Explained The following are three characteristics of Good Communication System: Ø Delivery Ø Accuracy Ø Timeliness Timeliness: System must deliver message within a specified time without any significant delay. The Data Delivered late may be useless. It is important in Real Time Transmission such as video conferencing that audio and video must be delivered as soon as they are produced. Delivery: Data communication system must deliver message to the correct address/Destination. Message must be received only by the user to whom it is addressed. Accuracy: Data Communication System must deliver the message accurately without any change. If incorrect data is transmitted by the system, it may not be usable.

Managing Data and Its importance || Explained Managing Data means storing files in secondary storage devices such as USB, Hard Disk etc. in an organized way. If we will store data in our computer in an organized way it would be easier to find it easily and quickly. In Windows the Document folder is a default folder where user saves files. If we manage data it would be easy to update for us. File Management tools of Graphical User Interface (GUI) Operating System provide facilities to quickly and easily create a New folder and copy or move files into them. It allow user to delete unnecessary files and folders. Shortcut Key to Create a New Folder:   Ctrl + Shift + N