Top 10 education websites to teach you for free
Every individual wants to receive the best of education to achieve his or her dreams. However, the more the institution is good, the higher the fees they charge. Students usually leave their education incomplete and do blue collar jobs to meet their basic ends. Moreover, these students collect money to complete their masters later in career. Apart from those who can afford expensive higher education, some handful of students gets scholarships.
In the age of internet and MOOCs, do we really need to spend huge amount on getting degrees? One can equally quench his third for knowledge by joining online classes. Online classes are not only cheap but also conveniently arranged for those who are working. What else a student would want if he gets free classes that too online. There are websites that provide free online courses or have resourceful material for students. These websites are bejeweled with informative podcasts, videos and notes, they also take time-to-time assessment tests. Indeed, there should be free flow of knowledge and it is beneficial for the students and teachers both.
It’s a myth to say that online education will go in vain, as the job market is more based on our skills, rather than our degrees. What you know matters more than from where you have learnt. Nowadays, agencies hire students on the basis of their knowledge and ability to solve problems, keeping aside their grades or degrees.
10. Khan Academy: khanacademy.org
Khan Academy is an online coaching website. Students who cannot afford a coaching can refer to this website. It gives a win-win situation to the students by giving them the liberty to learn on their pace, as it has a personalised dashboard to gauge the progress report. It has all the traditional school subjects including math, science, computer programming, history, art history, economics, and more. Moreover, it has lessons from kindergarten to calculus, all at one stop. To enhance the content for the students, it has partnered with NASA, the Museum of Modern Art, the California Academy of Sciences, and MIT. Also, the content is available in 36 languages.
Thousands of Popular Websites See What You Type—Before You Hit Submit
When you sign up for a newsletter, make a hotel reservation, or check out online, you probably take for granted that if you mistype your email address three times or change your mind and X out of the page, it doesn’t matter. Nothing actually happens until you hit the Submit button, right? Well, maybe not. As with so many assumptions about the web, this isn’t always the case, according to new research: A surprising number of websites are collecting some or all of your data as you type it into a digital form.
Researchers from KU Leuven, Radboud University, and University of Lausanne crawled and analyzed the top 100,000 websites, looking at scenarios in which a user is visiting a site while in the European Union and visiting a site from the United States. They found that 1,844 websites gathered an EU user’s email address without their consent, and a staggering 2,950 logged a US user’s email in some form. Many of the sites seemingly do not intend to conduct the data-logging but incorporate third-party marketing and analytics services that cause the behavior.
After specifically crawling sites for password leaks in May 2021, the researchers also found 52 websites in which third parties, including the Russian tech giant Yandex, were incidentally collecting password data before submission. The group disclosed their findings to these sites, and all 52 instances have since been resolved.
“If there’s a Submit button on a form, the reasonable expectation is that it does something—that it will submit your data when you click it,” says Güneş Acar, a professor and researcher in Radboud University’s digital security group and one of the leaders of the study. “We were super surprised by these results. We thought maybe we were going to find a few hundred websites where your email is collected before you submit, but this exceeded our expectations by far.”
The researchers, who will present their findings at the Usenix security conference in August, say they were inspired to investigate what they call “leaky forms” by media reports, particularly from Gizmodo, about third parties collecting form data regardless of submission status. They point out that, at its core, the behavior is similar to so-called key loggers, which are typically malicious programs that log everything a target types. But on a mainstream top-1,000 site, users probably won’t expect to have their information keylogged. And in practice, the researchers saw a few variations of the behavior. Some sites logged data keystroke by keystroke, but many grabbed complete submissions from one field when users clicked to the next.
“In some cases, when you click the next field, they collect the previous one, like you click the password field and they collect the email, or you just click anywhere and they collect all the information immediately,” says Asuman Senol, a privacy and identity researcher at KU Leuven and one of the study coauthors. “We didn’t expect to find thousands of websites; and in the US, the numbers are really high, which is interesting,”
The researchers say that the regional differences may be related to companies being more cautious about user tracking, and even potentially integrating with fewer third parties, because of the EU’s General Data Protection Regulation. But they emphasize that this is just one possibility, and the study didn’t examine explanations for the disparity.
Through a substantial effort to notify websites and third parties collecting data in this way, the researchers found that one explanation for some of the unexpected data collection may have to do with the challenge of differentiating a “submit” action from other user actions on certain web pages. But the researchers emphasize that from a privacy perspective, this is not an adequate justification.
Since completing their paper, the group also had a discovery about Meta Pixel and TikTok Pixel, invisible marketing trackers that services embed on their websites to track users across the web and show them ads. Both claimed in their documentation that a customers could turn on “automatic advanced matching,” which would trigger data collection when a user submitted a form. In practice, though, the researchers found that these tracking pixels were grabbing hashed email addresses, an obscured version of email addresses used to identify web users across platforms, before submission. For US users, 8,438 sites may have been leaking data to Meta, Facebook’s parent company, through pixels, and 7,379 sites may be impacted for EU users. For TikTok Pixel, the group found 154 sites for US users and 147 for EU users.
The researchers filed a bug report with Meta on March 25, and the company quickly assigned an engineer to the case, but the group has not heard an update since. The researchers notified TikTok on April 21—they discovered the TikTok behavior more recently—and have not heard back. Meta and TikTok did not immediately return WIRED’s request for comment about the findings.