07 File sharing and uploading

File sharing, Downloading and Uploading

Safe Downloading and uploading 

About Downloading :

Downloads iconDownloading is the transmission of a file from one computer system to another, usually smaller computer system. From the Internet user's point-of-view, to download a file is to request it from another computer (or from a Web page on another computer) and to receive it. The term download is used to describe the process of copying a file from an online service that is via an Internet to one owns a computer. 

Downloading also refers to copying a file from network server to a computer on the network. To download means to receive data i.e. whatever offered for downloading can be downloaded.  You can download any kind of files from Internet like documents, music, videos, images and software and many more.

About uploading:

The opposite of download is uploading this means copying a file from your computer to another computer over the network. Uploading means to transmit data. Whatever is transferred can be uploaded. In short “Uploading means sending a file to a computer that is set up to receive it”. You can upload any kind of files like documents, music, videos, images and software and many more. Uploading files or file sharing in P2P network is always between peer computers where as uploading server-client technology, the uploading would be done from no. of clients to a particular machine, which is a server.

File Sharing:

P2P (peer to peer) file sharing allows users to access media files such as books, music, movies, and games using a P2P software program that searches for other connected computers on a P2P network to locate the desired content. The nodes (peers) of such networks are end-user computer systems that are interconnected via the Internet. P2P is differs with server- client technology as files would be downloaded from one computer which is server.

Downloading from the Internet and sharing files are common, every day practices and can come with a set of risks you should be aware of.

What are the risks of file sharing or insecure downloads?

When you try to share a file or download a file from the Internet, it includes installing a program, opening pictures, links from different websites or from e-mails, downloading music files and many more files on to a computer .These files could be the same what they say are, but they can also be involved with something like malicious software that can harm your computer, which includes viruses, worms and many destructive programs.You could unknowingly give others access to your computer while file sharing, who could potentially copy private files. This can happen when you're asked to disable or alter your firewall settings in order to use Peer-to-Peer (P2P) to upload to a file sharing program, which could leave your computer vulnerable.

Downloading viruses, Trojans and other malware to your computer without your knowledge, may destroy data or give someone access to all the information on your computer or destroy all the confidential information on your PC as they're often disguised as popular movie or song downloads.

The   spyware   often changes your computer's behavior like PC becomes slow, and even causes a computer crash. The Spyware can be used to track the browsing history, steal the passwords and allow an attacker to grab   complete information of your system.

Downloading unwanted pornography labeled as something else and also exposing yourself to legal issues such as copyright infringement if you download movies, TV shows, music or software that are copyright protected, even if you didn't realize it.

Tips for Safe downloads :

  • While downloading any file close all the applications that are running on your computer, let only one set-up file run at a time of downloading.
  • Close all the important applications in order to be safe if something goes wrong while downloading.
  • Set firewalls, set antivirus to actively scan all the files you download.
  • Scan  all  the  files  after  you  download  whether  from  websites  or  links received from e-mails.
  • Always use updated antivirus, spam filter and spyware to help detect and remove virus, spyware from the application you want to download.
  • Never download any files like music, video, games and many more from untrusted sites and don’t go by the recommendations given by your friends or made by any random website's comments.
  • Check that the URLs are same and always download games, music or videos from the secure websites like which use HTTPS websites instead of HTTP. In the web address, it replaces “http” to https”. The https refers to the hypertext transfer protocol secure.
  • Download anything only from thrust worthy websites. Don’t click links to download anything you see on unauthorized sites.
  • If any dirty words appear on the website just close the window no matter how important it is, because spyware may be installed on your PC from such websites.
  • Check the size of the file before you download, sometimes it shows a very small size but after you click it increases the size of the file.
  • Never believe anything which says click on this link and your computer settings will be changed and your PC can be turned into XBOX and can play unlimited games on your computer.
  • Don’t accept anything that offers you free download because that may contain malicious software.
  • Don’t  click  the  link  or  file  and  let  it  start  download  automatically, download the file and save where you want save and then run on the application.
  • Set secure browser settings before you download anything.
  • Read carefully before you click on install or run application.  That means read terms and conditions
  • Do not download anything until you know complete information of the website and know whether it is an original site of an original company.
  • Never download from the links that offer free antivirus or anti spyware software, always download from trusted sites, if you are not sure about the site you are downloading, enter the site into favorite search engine to see anyone posted or reported that it contains unwanted technologies.
  • Check the validity of the certificate and issuer of the certificate for a site before any downloads
  • When you download chat software, check for default settings and adjust them if they are too permissive

References:

 

Address

Centre for Development of Advanced Computing, (C-DAC)
Plot No. 6 & 7, Hardware Park, Sy No. 1/1, Srisailam Highway, Pahadi Shareef Via Keshavagiri (Post) Hyderabad - 500005

Phone

Phone: 040-23737124/25
Mobile: 040-23737124/25

TollFree

1800 425 6235

Email Address

isea[at]cdac[dot]in