Antivirus software – mozillazine knowledge base ranking american university

Despite talk of "heuristics", most antivirus programs do not provide protection against rapidly spreading new malware infections before the antivirus companies manage to provide appropriate updates. To protect yourself against new e-mail viruses, open e-mail attachments only if you trust the sender and if the sender announces the attachment. Be alert for messages where the sender’s address is spoofed (the message appears to have come from one source but in fact was sent from somewhere else) or where the attachment is announced in a way that sounds suspiciously generic (e.G., "hi, here’s the file you wanted"); both techniques are commonly used by the creators of malware to trick you into opening the attachment. University of washington biology if you have any suspicions about the origin or authenticity of a message, do not open any attached files until you have checked with the sender.

Unless the e-mail is job-related or otherwise important, consider waiting a while before opening the attachment. This gives your antivirus program’s manufacturer a chance to provide a necessary update. Be especially careful if the e-mail is not a new one and is being forwarded.

Opening attachments is the major risk, but consider using "view -> message body as -> plain text" to view a message as plain text whenever you’re going to read a suspicious message. For example, reading a message in your junk mail folder to confirm whether it’s really spam. Viruses and scripts rely upon the email client interpreting the message. Universities usa if you view it as plain text, there is nothing to interpret (unless you click on a link in the message or open an attachment)

• many experts recommend turning off email scanning in antivirus software since it provides no added protection and corrupts and destructs email folders much more often than viruses and other malware do. It also eats up CPU power, slows down sending and receiving, and causes many problems such as time-outs and changes in account settings. To be safe it’s enough to make sure your antivirus software is monitoring your whole computer, in other words make sure that it provides real-time protection (also called "background guard" etc.) and that this is turned on. [1] [2] [3] [4] [5]

• if you nevertheless want to let your antivirus program scan email, it is recommended to only let it scan incoming messages because many antivirus programs have problems scanning outgoing messages, especially if you use SSL. If the recipient doesn’t have an up-to-date antivirus program with real-time protection, they have bigger problems to worry about than your not scanning your outgoing mail.

• your email provider may automatically scan messages and "remove" infected ones (prevent them from reaching your mailbox) or may provide this service for a fee and may be using better software than you can buy. Advanced users that understand the risks sometimes disable email scanning by their antivirus software and rely upon the email provider to "remove" infected messages. However, most users don’t know anything about what their email provider does (for example, whether it scans both the message body and the attachments) so if you want to scan incoming mail, it’s safest to always scan the mail yourself.

Avast!, AVG, NOD32, and kaspersky seem to be safe choices, and the retail version of symantec a risky choice based on comments from the forums over several years. Symantec’s norton antivirus does not support IMAP and its POP3 scanner frequently quarantines the inbox according to many reports in the forums. University rankings law there doesn’t seem to be a consensus for CA, F-prot, mcafee, panda, etc., though typically the enterprise version of a anti-virus program is more compatible than the retail version. The free version of avast! Seems to meet most users’ needs. Any antivirus program with real-time protection (including norton) can be safely used by turning off email scanning.

We used to have a long list of compatible and problematic antivirus programs, but it was removed since it was too hard to keep up to date. The mozilla wiki has a list of compatible and problematic antivirus programs, though it also has problems being kept up to date. What version of thunderbird you use doesn’t seem to effect what antivirus programs are safe choices.

• the update of avast! To 10.3.223 prevents thunderbird from sending a HTML message. You will get an error message about it not being able to include nsemail.Html when it tries to send the message. The workaround is to configure avast! To exclude that file. [11] [12]

• AVG has stopped development of "AVG plugin for mozilla thunderbird" and recommends you install the "personal E-mail scanner service" instead. [13] they aren’t the only anti-virus manufacturer that has had problems dealing with the frequent release cycle of thunderbird. If your vendor doesn’t have a version that supports the latest version of thunderbird, see if you can use the generic solution they have for less popular email clients instead of the thunderbird specific plugin.

• in some cases the thunderbird add-on (the ESET smart security extension for example) just adds a toolbar to report spam, and if you don’t install that add-on it will still scan your messages for viruses. University washington dc the ESET addon is not supported in newer thunderbird versions [14].