Millions of new web proxies are created everyday
and most of these do not last more than 2 days. This is primarily because the
proxy servers get blacklisted because of malicious use or even over use. Most
of the free proxies floating around in the web actually are used proxies which
have already been blacklisted or are on the verge of it. There is also an
increased security risk with the free proxies because it is possible that they
originate from a hack site. If the free proxies are not associated with a
reputed site (example Hidemyass), the likelihood of it being a hack proxy is
There are reliable free proxy sites on the
internet but even they cannot guarantee usability of a proxy at any given point
of time because free proxies get scraped on a mass scale and get used
instantly. Web automation softwares are the main users of free web proxies.
These applications are programmed to automatically pick up any free proxy,
check its authenticity and then immediately start using if it is found to be
working. Individual browsers who use free proxies have very little chance of
finding proxies that have not gone through the grind of web applications. So,
they are likely to find only 1 out of 4 proxies working.
It is also estimated that more than 40% of
individual free proxy users get affected because of hack proxies. It is always
better to run these free proxies through a proxy checker before using them.