Tuesday, February 10, 2015

5 Steps to stop Facebook spam

Once again the spam videos are being posted on 
Facebook friend's wall or friends are being tagged on the spam videos.

  • Beware the Facebook 'Magnet' scam: Experts warn 'malicious tag' campaigns are rising - and can infect 55,000 users a day
  • The scam works by tagging no more than 20 friends in a malicious post
  • This post is typically a video designed to lure the victim to click on it
  • Number of tagged friends is always 20 and the video is always different
  • Once a victim clicks on a link, they're prompted to update Flash Player
  • The virus then takes control of a device and installs other malicious files
  • Once infected, the victim inadvertently posts the link to their own Facebook feeds, tagging another 20 people.
Here are some steps which could save you from getting embarrassed.
1.Don't click on the post
(It may be seductive..still ignore the post)

2.Change your privacy settings from Public to Friends

3.Block or Remove Apps 

Avoid using apps/games which tell about your personality or make predictions about your future or anything personal related to you. Basically they all spread spam.Similarly the apps/games like changing color or fonts of Facebook they all spread spam. If already using block 'em immediately.

When you block an app or game, it won't be able to access any of your Facebook information or send you any requests. If you no longer want an app or game to contact you, please remove it.

To block an app or game:
  1. Click  in the top right of Facebook and select Settings.
  2. Click Blocking in the left column.
  3. In the Block apps section, type the name of the app or game you want to block. To unblock an app or game, click Unblock next to its name.
If you received a request from an app or game and you want to block it:
  1. Go to the App Center and click Activity at the top.
  2. Click x next to the request.
  3. Click Block [App/Game Name]? and click Confirm.

4.Change Timeline and Tagging Settings

5.What can I do to keep my account secure?

Here are a few things you can do to keep your account safe:
  • Pick a unique, strong password. Use combinations of at least 6 letters, numbers and punctuation marks and don't use this password for any of your other accounts. You can also use a password safe like LastPassKeePass or 1Password to set and remember unique passwords for your account. Learn how to change your password.
  • Think before you click. Never click suspicious links, even if they come from a friend or a company you know. This includes links sent on Facebook (ex: in a chat or story) or in emails. If one of your friends clicks a spam link, they could accidentally send you or tag you in spammy posts. If you see something suspicious on Facebook, report it. You also shouldn't download things (ex: a .exe file) if you aren’t sure what they are. Learn more about recognizing suspicious emails.
  • Watch out for fake Pages and apps/games. Be suspicious of Pages promoting offers that are too good to be true. If in doubt, check to see if a Page is verified. Also be mindful when you install new apps or games. Sometimes scammers use bad apps and games to gain access to your Facebook account.
  • Don't accept friend requests from people you don't know. Sometimes scammers will create fake accounts to friend people. Becoming friends with scammers allows them access to spam your Timeline, tag you in posts and send you malicious messages. Your real friends may also end up being targeted.
  • Never give out your login info (ex: email address and password). Sometimes people or pages will promise you something (ex: free poker chips) if you share your login info with them. These types of deals are carried out by cybercriminals and violate the Facebook Statement of Rights and Responsibilities. If you're ever asked to re-enter your password on Facebook (ex: you're making changes to your account settings) check to make sure the address of the page still hasfacebook.com/ in the URL (web address).
  • Log in at www.facebook.com. Sometimes scammers will set up a fake page to look like a Facebook login page, hoping to get you to enter your email address and password. Make sure you check the page's URL before you enter your login info. When in doubt, you can always typefacebook.com into your browser to get back to the real Facebook. Learn more about phishing.
  • Update your browser. The newest versions of internet browsers have built-in security protections. 

Blogger Tricks

Monday, February 2, 2015

उपभोक्तावादी संस्कृति PPT in Hindi

उपभोक्ता वादी संस्कृति के चलते विज्ञापनों के मकडज़ाल में फंसकर आज की युवा पीढ़ी दिग्भ्रमित होती जा रही है। शरीर पंचभौतिक तत्वों से मिलकर बना है तथा इसे योग के अनुशासन से ही ठीक रखा जा सकता है परंतु आज विज्ञापनों के फेर में सौंदर्य प्रसाधनों तथा स्वास्थ्य वर्धक पेयों के नाम पर रासायनिक मिश्रणों के उपयोग से न केवल अपनी त्वचा का नाश कर रहे हैं अपितु गंभीर बीमारियों से भी ग्रसित होते जा रहे हैं। मानसिक गुलामी के चलते हमने अपनी दिनचर्या को भी बिगाड़ दिया है। आज दुनिया के अधिकांश देश जहां योग की पद्घति को अपना कर अपना जीवन सुधार रहे हैं वहीं हम आज भी योग का लाभ लेने में संकोच कर रहे हैं।
Preview (पूर्वावलोकन)

Click here to Download

Thursday, January 8, 2015

How Nuclear Power Plants Work / Nuclear Energy (Animation)

A nuclear power plant is a thermal power station in which the heat source is a nuclear reactor. As is typical in all conventional thermal power stations the heat is used to generate steam which drives a steam turbine connected to a generator which produces electricity.

This animation explains nuclear power plants in detail and how they work.

1) Important buildings (e.g. cooling tower, containment building)
2) Structure of the reactor vessel (pressurized water reactor)
3) Fuel assemblies, fuel rods and fuel pellets
4) Heat production through nuclear fission
5) Heat exchanger (steam generator)
6) Steam turbines
7) Production of electricity through the generator
8) Condenser
9) Primary and secondary circuits

Saturday, November 15, 2014

Disable WhatsApp blue ticks

Recently Whatsapp had added the “Read Receipts” feature in the form of two blue ticks, letting users know if their message or picture had been seen by their chatting partner.Previously, a single tick would mean that the message is sent and a double tick meant that the message has been received on the phone. But, there wasn't any confirmation whether the message had been seen by the recipient and when. Now there is no escaping as the sender will know if the partner saw the message and when.
While blue ticks could be great for some but also stirred up quite the panic among other users. This could take an adverse effect on WhatsApp users and force them to migrate to other chat applications.

So,how to get rid of these whatsapp blue ticks ??

All you have to do is go the Whatsapp site to download the updated version 2.11.44 (only available on WhatsApp’s site for now) which has a new option under privacy settings.

Thursday, November 13, 2014

World Energy Outlook 2014

World Energy Outlook 2014 by Dr. Fatih Birol, Chief Economist of the the International Energy Agency (IEA)

Thursday, October 23, 2014

PhotoMath: App that solves equations by using your mobile phone camera

PhotoMath reads and solves mathematical expressions by using the camera of your mobile device in real time. It makes math easy and simple by educating users how to solve math problems.

PhotoMath may sound like it is simply helping kids cheat, but the app also provides a step-by-step guide showing how each of the problems are solved. The step-by-step guide is beneficial to students that do not have access to a tutor and struggle with solving math problems. Parents can also use the PhotoMath app to jog their memory when teaching math to their kids.

PhotoMath currently supports basic arithmetics, fractions, decimal numbers, linear equations and several functions like logarithms.The PhotoMath app uses optical character recognition (OCR) technology to read the equation and calculates the answers within seconds. There is a red frame in the PhotoMath app that you have to use to capture the equation.

Here is a video demo of how PhotoMath works:

The app is available for Windows Phone and iOS only.
For Android it will be available from early 2015. Subscribe to their mailing list to get notified.

Saturday, October 18, 2014

Electronic Paper (e-paper) PPT

Electronic paper, e-paper and electronic ink are display technologies that mimic the appearance of ordinary ink on paper. Unlike conventional backlit flat panel displays that emit light, electronic paper displays reflect light like paper. This may make them more comfortable to read, and provide a wider viewing angle than most light-emitting displays. The contrast ratio in electronic displays available as of 2008 approaches newspaper, and newly developed displays are slightly better. An ideal e-paper display can be read in direct sunlight without the image appearing to fade.
Many electronic paper technologies hold static text and images indefinitely without electricity. Flexible electronic paper uses plastic substrates and plastic electronics for the display backplane. There is ongoing competition among manufacturers to provide full-color ability.
Applications of electronic visual displays include electronic pricing labels in retail shops, and digital signage, time tables at bus stations, electronic billboards, mobile phone displays, and e-readers able to display digital versions of books and e-paper magazines.

e-Paper Technologies 

  • Gyricon
  • Electrophoretic display
  • Electrowetting
  • Electrofluidic display
  • Interferometric modulator (Mirasol)

e-Paper Advantages and Disadvantages 

Advantages of e-paper

  • Paper-like Readability
  • They  are persistent without power, drawing current only when they change, which means low power consumption therefore  batteries can be smaller and last longer.
  • An electronic ink display module is thinner, lighter weight, and more robust than conventional LCD's.
  • Electronic Paper is highly flexible and it is able to be twisted or bended into different curvatures. The Electronic Paper can be applied to different shapes of products, without being limited to being bonded to flat display panels.
  • They are completely reflective requiring no backlight.
  • They are inherently bi-stable for extended periods of time.

Disadvantages of e-paper

  • Very low switching speed
  • Electrochemical complexity 
  • Electronic paper technologies have a very low refresh rate compared to other low-power display technologies, such as LCD.
  • A shadow of an image may be visible after refreshing parts of the screen. Such shadows are termed "ghost images", and the effect is termed "ghosting“.