Mailbomb

From Free net encyclopedia

A mailbomb (or mail bomb), also called parcel bomb or letter bomb, is an explosive device sent via the postal service, and designed to explode when opened, injuring or killing the recipient, usually someone the sender has a personal grudge against, or more indiscriminately as part of a terrorist campaign. Some countries have agencies the job of which is in part the interdiction of mailbombs and the investigation of mailbombings.

Mail bombs are usually set to explode immediately on opening, with the intention of seriously injuring or killing the recipient (who may or may not be the person to whom the bomb was addressed). Parcel bombs may have excessive postage because a bomber usually does not want to mail a parcel over the counter having to deal with a clerk. Letter bombs may feel rigid, or appear uneven or lopsided. Package bombs may have an irregular shape, soft spots, or bulges.

Bombs delivered by mail can often be recognised because they arrive in suspicious packages or unusual looking letters. The police and security consultants can advise how to recognise possible mailbombs.

1 What to do with a mail bomb
2 Emailbombing
3 See also
4 External links

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What to do with a mail bomb

Anyone suspecting that they have received a mail bomb is advised to:

Do not disturb the article. Do not open it or handle it in any way.
Call the Bomb Squad
Clear the area immediately of all people. Evacuate the building.

A related threat is mail containing unidentified powders or chemicals. In many cases, these turn out to be harmless, and often sent as a joke or hoax threat. However, until the substance can be analysed in a laboratory it may present a hazard, so police or environmental authorities may close the affected areas. This often is the intended purpose of the sender.

The world's first mailbomb was used by a Swedish man named Martin Ekenberg on August 20, 1904, targeting CEO Karl Fredrik Lundin in Stockholm. It was made of a box loaded with bullets and explosives. [1](Swedish)

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Emailbombing

In Internet usage, a mailbomb is a form of net abuse consisting of sending huge volumes of e-mail to an address in an attempt to overflow the mailbox or overwhelm the server. Mailbombing is sometimes accomplished by giving the victim's email address to multiple spammers.

In the Russian Internet area, there is one more sense for mailbomb. There, mailbomb is a form of denial of service attack against a computer system (mail server). After the most of servers began checking the trespassing mail with anti-virus software, the trojan viruses tried to send themselves compressed into archive, such as ZIP or RAR or 7-Zip. Then mailservers began to unpack archives and check their contents too. That gave script kiddies an idea to make a huge text file, containing, for example, the only letter 'Z' repeated millions of times. Such a file compresses in relatively small archive, but being unpacked by early versions of mail servers might waste the free space on its disks and cause denial of service. Also known as "Zip Bombs".