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Communication over the network with advertisements (advertised address removed) Sometimes spam distribution network via the built-in Microsoft Windows SMB-service Messenger. These messages appear as pop-ups (unless a third-party software, manufacturing them in other ways). In this case, to turn off their admission may be, for example, to stop the Messenger service using net stop messenger [12]. In versions of Windows NT, beginning with Windows XP SP2, this service has already stopped by default, so this method of distribution are less likely to occur. SMS-messages Spam can be spread not only through the Internet. Advertising messages sent to mobile phones via SMS-messages, especially the unpleasant fact that they are difficult to defend. Collect email addresses Spammers find out the email addresses of users in

different ways. Some of them are: Address mailbox user posted on the public site – mostly in the guest book, forum, personal card, etc., where it can find a special program (harvester), Scanning indexing sites such as search engine robots. If the address of the mailbox is not unique word, for example, common name, it may be chosen for the dictionary. Do spammers have special dictionaries that include common words, names of people, place names and some of the most popular combination of network slang. Combining this dictionary and a list of domain names (open public), a spammer gets a list of addresses for mailing.

If you are a person with whom the owner of this correspondence box was infected with a Trojan program, all the addresses from its address book can get to a spammer. The database of customers a company could be stolen or even sold by the company spammers. Harmful Mass mailing of spam is low cost to the sender for a message. However, a huge number of useless messages cause obvious harm to the recipients. The first refers to the time spent wasted on unnecessary screening mail and vyiskivanii among its individual letters to the right. Very often the Internet traffic is very expensive, and you have to pay for apparently unnecessary emails.

It is believed that the spam could be beneficial for providers, as well as lead to increased traffic. In fact, providers also have additional costs due to increasing the useless burden on the channels and equipment. It is the providers have to spend resources on redundant hardware and the system of protection against spam. According to publicly available statistics , at least 80% of chain letters is currently spam (according to some research on a web user now account for 70 spamovyh messages per day ). Most of its mail servers shall be shut off during the reception. But even the remaining small part is sufficient to aggravate the lives of users.

Providers bear additional costs because of the constant need to fight spammers (excess equipment, excess capacity channels, a special software for spam). Spam is also harms the reputation of adherents of this method of marketing. A simulation of the spam mailing can be used to discredit the good (which it is advertised) and / or carrier, with which it addresses (supposedly or really) done, that is, spam can be used in unfair competition and «black» PR

Other methods The general tightening of the requirements for letters and senders, for example – refusing to accept letters with the wrong return address (letters from non-existent domain), check the domain name to IP-address, which is a letter, etc. Through these measures eliminated only most primitive spam – a small number of messages. However, it is not zero, so the meaning of their use remains. Sort the letters on the contents of the letter header fields allows to get rid of a certain amount of spam. Some clients (eg, Mozilla Thunderbird or The Bat!) Provide an opportunity to examine the headers without downloading from the server all the email as well, and thus save bandwidth. System type «a challenge-response» to verify that the sender – the person, not the robot software.

Using this method requires the sender of the fulfillment of certain additional actions, often it may be desirable. Many such systems pose an additional burden on the postal system, in many cases, they send requests to fake addresses, it is in professional circles, such decisions are not respected. In addition, the system can not distinguish a robot spammers from any other, for example those that send news. Systems to measure signs of mass communication, such as Razor and Distributed Checksum Clearinghouse. Built-in mail server software modules count checksums of each passing through them and check their email on the servers of Razor, or DCC, which reported the number of appearances letter on the Internet.

If a letter appears, for example, tens of thousands of times – perhaps this is spam. On the other hand, mass communication can be a legitimate mailing list. In addition, spammers can vary the text message, for example, by adding at the end of random characters. Legal aspects of the problem In some countries, legislative action against spammers. Attempts by outlawing or limiting the activities of spammers face a number of difficulties. Is not easy to define in law what is a legitimate mailing list, and what not. Worst of all, that the company (or person), spammers can be located in another country. To ensure that such laws were effective, it is necessary to develop a coherent legislation, which would be operated in most countries, which seems elusive for the foreseeable future.

In Russia, spam is prohibited by «the Law on Advertising» (Article 18, Clause 1) The proliferation of advertising on the networks of telecommunications, including through the use of telephone, facsimile, mobile radio communication is permitted only with prior consent of the caller or recipient to receive advertising. At the same time recognizes the widespread advertising without the prior consent of the caller or recipient, if reklamorasprostranitel not prove that such consent was obtained. In formal comments, the Federal Antimonopoly Service, entrusted with the responsibilities for monitoring compliance with this Act, referred to the applicability of the rule for Internet delivery.

For violation of Article 18 reklamorasprostranitel is responsible under the law on Administrative Violations. However, FAS has no authority to carry out operational search activities of the person responsible for the spam, and authorized to do so their bodies can not hold in the absence of the Russian administrative and criminal law responsibility for the delivery of spam. Therefore, despite the periodic publication of materials to bring the perpetrators to justice [21], currently, the legislative rule ineffective. From 1 January 2004 in the U.S. the federal law, known as the Can-Spam Act. Attempts to bring spammers to court, and sometimes these attempts are successful.

American Robert Solouey lost to the process in federal court against a small company oklahomskoy provider of Internet services, the operator which has accused him of sending spam. The sentence the court included damages of $ 10 075 000 . The first case, when the user has won a case against a company involved in the visual occurred in December 2005, when businessman Nigel Roberts from the island of Alderney (Channel Islands) has won court against Media Logistics UK, receiving as compensation for 270 £