e-mail attachment


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e-mail attachment

A computer file that rides along with an e-mail message. Attachments are widely used to transfer photos and documents to another party. However, very large files and executable files are generally prohibited, which is why users sign up with a file sharing service that has no restrictions (see cloud storage).

The process is always the same. Users create an e-mail to a recipient, select Attach from a menu and then browse a folder hierarchy to find the files to attach. One drawback to attachments is that the attached file grows about 30% larger than the original. It must be encoded into a text-only format in order to pass through all the servers in the Internet mail system (see 7-bit ASCII).

Attachments Can Be Dangerous
If the receiving mail server accepts an executable attachment (many no longer do), and the e-mail recipient clicks it, the program will be run in the user's computer. This is a common method for implanting a virus or Trojan (see dangerous extensions). See e-mail and how to transfer a file over the Internet.
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References in periodicals archive ?
Beginning in June 2002, prospective authors were informed on the CE&S Web site that the preferred method for manuscript submission was via e-mail attachment, although manuscripts on mailed discs would still be accepted.
Sobig is an e-mail and network worm, sending itself around as a PIF e-mail attachment. The worm has remote control functionality through which the virus writer can control infected computers.
Yet despite all the wireless and mobile solutions available to today's "road warriors," few address the need to access e-mail attachments.
The latest worms -- worms are viruses that can spread without human involvement -- don't require you to open an e-mail attachment in order for them to wreak havoc.
The most recent form of attacks take the form of e-mail attachments that take advantage of weaknesses in certain software products and the popularity of e-mail.
The Information-Technology Security Center of the Information-Technology Promotion Agency (IPA), an affiliate of the Ministry of International Trade and Industry, said Friday the virus, which is sent as an e-mail attachment, causes computers to crash.
* Save all e-mail attachment files and scan them before opening.
Earlier, three leading antivirus companies, F-Secure, Network Associates, and Kaspersky Lab, said a new virus, similar to the I Love You e-mail attachment that recently clogged network computers, had hit Telefonica.
TELECOMWORLDWIRE-7 August 2006-Alltel Wireless selects DocHawk2 e-mail attachment viewer for BlackBerry users(C)1994-2006 M2 COMMUNICATIONS LTD http://www.m2.com
F5's WANJet solution has reportedly enabled AutoTrader.com to accelerate e-mail attachment downloads and application response times, leading to increased employee productivity.
Worldwide Computer Products News-30 December 1999-C2C Systems releases automated e-mail attachment compression utility for MS Outlook and Exchange (C)1995-1999 M2 COMMUNICATIONS LTD http://www.m2.com
Several possible message templates are included in this variant of the worm, and the common theme of these messages is a false anti-virus certification message, which is meant to convince the user it is safe to open the e-mail attachment.