It's easy to sign up for paid mobile phone services: just click the button on the site page. Yandex.Browser warns you about paid subscriptions so you can explicitly agree to them.
Paid subscriptions are one way to pay for internet-based services. Using a paid subscription you can, for example, set up an answering service on your cell phone or sign up for weather forecasts sent by SMS on a weekly basis. To sign up, just follow the link to your mobile service provider's page and click to confirm your subscription. Some content providers abuse simple subscription setups and sign users up for services they are unaware they are paying for.
Although mobile subscription pages are hosted on the websites of mobile network operators, their content is determined by outside content providers. Some of them deliberately conceal information about payment for services. For example, the payment button might be labeled Play or Enter and the message informing you that the service is paid may be written in small letters or hidden beyond the visible part of the screen. As a result of clicking just one button on one of these sites, a certain sum then starts getting deducted from your mobile balance every day.
It is particularly easy to end up in this position if you get to such a site using a computer rather than a mobile device. This is because it is harder to located small script on a bigger screen.
According to Yandex's data, about 20% of users land on pages with a mobile subscription from their computers. One of the reasons for this is the popularity of 3G modems that are often used together with Wi-Fi routers. In addition, malicious extensions may open pages containing paid subscription.
Yandex.Browser will display a warning if you end up on the page of a mobile operator that has a mobile subscription. click Proceed to payment only if you really intend to pay for a subscription.
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