Protection of mail

It would seem, problems of safety at job in the Internet should concern only the serious organizations, however it not absolutely so. Yes, really, the usual user has no large web - server or database on which attack of villains could be made, but in fact dangers usually trap in the most unexpected places. One of such places is such most ancient and most used Internet - service, as email.

Let's try to classify possible{probable} troubles at job with email.

The first, the most obvious, - an ambush of Trojans. Usually well-known horse looks as the exe-file attached to the letter. If it  to execute, that, having taken root in your system, the Trojan will start samorassylat`sja to addresses from your directory. It would seem, how it is possible to force to start the sane person something fallen down not clear whence? The bait can be the most refined, for example, the announcement that the sent file is not that other as the newest antivirus which is necessary for starting, instead of that happen really terrible. It is needless to explain, that this " the antivirus ' and is the real virus.

Other known bait is an instruction{indication} that this file is something extremely valuable. For example, super the generator of numbers{rooms} of credit cards or a collection of the freshest passwords to sites of "adult" orientation. And as the letter has come from your good familiar (in fact the virus is dispatched to addresses from a directory) it is quite possible and to believe. Last time Trojan Happy99 "is rather popular". The program draws beautiful fireworks, at the same time is built in system and dispatches the copies by means of e-mail. It is necessary to notice, that the environment of duplication of a virus can be not only operational system, but also modern office applications. For example, widely known macro viruses for MS Word and MS Excel.

Perfect illustration also macro virus ShareFun. He dispatches documents with the copy to three casual addressees from a directory by means of MS Mail. The document is sent as attachmenta, and the letter contains the recommendation to read this document.

How to be rescued from such misfortune? First of all, to be protected. It is not necessary to start the carried out files which have unexpectedly come to you. The same way it is necessary to concern and to files of office formats. Though, in this case, in the same MS Word it is possible to establish an option " to not carry out the macro ' and then it is possible to open safely the come infected document, - in fact makros the code of a virus will not be executed also does not become more active.

Other advice{council}: use of on a regular basis updated anti-virus program. From domestic development, perhaps, it is most good AVP from Kaspersky. Besides traditional viruses in files, this product quite successfully catches also such " post ' parasites.

Near to a problem of Trojan programs there is a problem " computer viruses for a human brain ". What is it such? You receive the letter from the friend in whom he warns you of a new terrible virus which burns the monitor, physically destroys the winchester, and before that sends all your passwords to spiteful hackers. And your friend advises you to be vigilant, and also to dispatch this prevention{warning} to everyone whom you know. The stage of reproduction of a virus here is supported by the person!

Other variant are the traditional monetary pyramids which have got over now in the Internet. To you suggest to receive money simply so or nearly so simply so and that process of reception of money went faster, it is necessary to tell about this magnificent opportunity to all friends. As a nutrient medium for duplication of similar type of viruses human nonsense serves.

Now from simple and understandable we shall pass to things more complex . Serious danger to users of email represents flud. The villain, or simply slow friend, can send you a plenty of letters or one letter of the enormous size. Your mail box will be hammered and will not accept new letters until you will not extort his  contents. If you do not have restriction on the size of a mail box all the same it is necessary to extort the big letters until you will not reach new letters necessary to you.

Cases of a contamination of a mail box can be classified on unintentional, a spam and deliberate villainy.

Unintentional are when your friend sends from the best promptings to you set of beautiful photos. Advice{council} is simple: try to use post service with several variants of access. For example, the majority of free-of-charge post services, such as yahoo.com, enable viewing of contents of a box through the web - interface. Also it is possible to lead{carry out} and rather useful operation of removal{distance} of letters directly on the server, and already then, by means of post report POP3 to download to itself really important letters.

The spam is a contamination of a mail box in the advertising purposes. It is enough to be registered on several sites, to write some letters to Internet - conferences and it is possible already to be going to accept periodically invitations to visit a new interesting site, to buy books in network shop, to get boots shipment at own expense from Uryupinsk, etc. The Big harm, apparently, also no, but the quantity{amount} of letters grows as snow whom. Treatment here should be preventive. Always publish the spare post address. Get{start} such address on the free-of-charge server - their great variety. And always, when you ask to specify in any form the address, specify this podstavnoj the address. At a spelling in guest books and news - conferences, also use such spare addresses. The key address distribute only in really necessary cases.

Now we shall touch a case of deliberate villainy. Someone has decided to salt{do a bad turn} strong to you and methodically sends any dust in a mail box. To be protected it is possible, having asked the provider to filter a mail from the certain proceeding address. It is possible to complain to the provider of the villain and then, probably, it  account it will be cancelled still. But nobody will prevent the malefactor to put other address as proceeding. Then the problem of kill of letters, and sometimes and presence{findings} of the enemy, becomes not trivial. The following possible{probable} danger is a threat of confidentiality correspondences (sm). . Besides competent bodies, in correspondence competitors, spies, and simply curious persons can become interested. A standard method of protection is encryption of the letter, for example, with the help of freely distributed program PGP (Pretty Good Privacy). Along with proof algorithms of encryption, the program has an opportunity to be built in popular mailers so job with her is simple.

At last one more aspect of safety of email - safety of post services with the web - interface. Appreciably safety issues of web - mail are based on problems of webs - browsers and webs - servers. The general{common} ideas of attacks are based on use of mistakes and defects in scripts of a mail server and on introduction of bookmarks in the text of the letter. The detailed description of such opportunities deserves separate clause{article} for now it is possible only to advise to leave always the web - interface of post service with the help of the stipulated means. As a rule, for this purpose exists the special button ("Logout", " Sign out ", " the Output{Exit} ', etc.) When you leave in the correct way the communications{connections} created for a session time files and variables are correctly destroyed, in an opposite case you leave potential gaps through which any villain can penetrate.