Peking University " Wei Shen " has only four lines of resume. Although it is simple, it is full of gold content. However, some netizens discovered that the email address he reserved on the official website was a string of English letters, which caused concern. Some people find it strange, "Although I can understand it, it is a bit strange to write it like this." Others speculate that "this is 'Weishen' to prevent spam." On July 1, Mr. Tan, a senior network information technology expert in Chongqing, told Upstream News Reporter (report email: [email protected]): "He replaced the email address symbols with letters, which is similar to encryption. It is used to deal with the general web crawler program ."
Wei Dongyi's email address is a string of letters. Image source: Official website screenshot
html Wei Dongyi, a mathematical genius born in the 190s, is known as the "sweeping monk" of Peking University. He won the gold medal in the International Olympiad Mathematics Competition at the age of 16. According to CCTV, his problem-solving method is called "Wei's method" and it is so fast that he is called "Wei God" in the mathematics community.
In the beginning, Wei Dongyi became popular not because of his outstanding performance in the field of mathematics, but when he was interviewed by the media on the Peking University campus, he was carrying a bottle of mineral water and a few steamed buns, which made people very surprised. It’s hard to imagine that this is a professor from Peking University.
The story of "Wei Shen" has always been regarded as a legend by netizens. Recently, the string of English letters "jnwdyi at pku dot edu dot cn" reserved by Wei Dongyi in the official website of the Department of Mathematics of Peking University has aroused heated discussion among netizens. Some netizens felt curious, "Although I can understand it, it's a bit strange to write it like this." Some netizens thought it was very unusual, "This is what 'Wei Shen' wrote on purpose." Some netizens analyzed, "There are online programs that collect Use your email address to send spam to prevent web crawlers."
Some netizens said this is to prevent crawler viruses. Image source: Internet
html On July 1, Mr. Tan, a senior network information technology expert in Chongqing, told upstream news reporters: "The letter at corresponds to the symbol '@', and the letter dot corresponds to the symbol '.'. Translated, his email address is: jnwdyi@ puk.edu.cn." As for why his personal email address is displayed in this way, Mr. Tan analyzed: "You have to ask the person for the specific purpose. As for netizens, it is also possible to use standard email addresses to prevent crawlers and programs. Just add characters such as '@''.'. The web crawler technology generally uses these two characters to capture email addresses. He changed the writing method, which is similar to encryption, and is enough to deal with ordinary web crawler programs. "
then" Wei Shen. "Does encrypting email addresses with "at" and "dot" work? Mr. Tan said: "It can only be said that it has a certain effect. Generally, email addresses still use '@''.'. A crawler is a program. If a netizen can understand his encrypted email address, then the crawler program may also understand it. If the program specifically wants to search for email addresses, you can write multiple algorithms to segment sentences. If '@' cannot be checked, check at. Using at as a keyword can also take out the letters before and after. The same goes for checking dot. "
upstream news reporter Feng Shengyong
