background
After 11 long vacation this year, the ranking of the domestic web site in the Alexa suddenly experienced a large-scale collective landslide, all kinds of rumors began to circulate in netizens, a more popular saying is, Alexa finally began to adjust the algorithm to counter more and more Chinese cheating site, people regard this as the Alexa "justifiable defense", After all, a list of the biggest selling point of the site depends on the fairness of its rankings.
All kinds of rumors can not solve the audience on the Alexa credibility of the doubt, because the domestic mainstream media has never been to the Alexa technology in-depth analysis and reporting, and in the following introduction, the reader can see, perhaps South Korea's ranking is too high for another reason, And the so-called Alexa cheating means is not only a number of previous media coverage of the refresh so simple, and, Alexa also has its own very smart cheat-proof means. However, this article mentioned cheating means and the internet can be seen everywhere, "cheat book" has the essence of different, so, Alexa to the extent to resist this uncommon way of cheating is hard to say.
Alexa Toolbar DNA to thoroughly understand the Alexa rankings is credible, must be technically on the Alexa Global web site traffic monitoring for a comprehensive anatomy, of course, Alexa never released its own technical details
Analyze the situation
Now the latest version of the Alexa toolbar operating mechanism and has not changed much, whenever the user with the Alexa toolbar in IE browser to open a new page, Alexa Server (data.alexa.com) will receive encrypted packets, the core information in this packet is more than 10 parameters, including the current page address, page open time, client display resolution, Alexa Toolbar version number, the user is "Amazon" Users, including an important hidden parameters, by Kobayashi analysis, that is the Alexa for each installed toolbar automatically generated ID number, this number should be the only global. Alexa can through this ID for each feedback packet of the issue of the unique identification, which is to solve the problem of PV repeat calculation and prevent the same user multiple times to refresh cheating an important means.
This program to simulate multi-user access to the implementation of cheating, the most important link is the Alexa used to uniquely identify the identity of the ID number of the generation algorithm to crack, which requires a sufficient number of Alexa tool to sniff, crawl its data packets for quantitative analysis of the algorithm. Estimates, the domestic can do these things are not a few, but the internet in the circle of the masters are rarely to do it.
Conclusions
No matter what the purpose, people betray Alexa always hope to get benefit from it, the more in-depth research on Alexa, the more profound understanding of Alexa's value, the more can benefit from it.
