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7

You can use Wireshark: free and open-source works on Windows/Linux/Mac can capture all network data. Just filter what you need:


4

You can use tcpdump: free and open-source works on Linux can sniff network data, such as POP3 passwords: Code snippet to get POP3 passwords and a bit more: tcpdump port http or port ftp or port smtp or port imap or port pop3 -l -A | egrep -i 'pass=|pwd=|log=|login=|user=|username=|pw=|passw=|passwd=|password=|pass:|user:|username:|password:|login:|pass |...


3

I'd use ngrep. It's more or less tcpdump and grep rolled into one tool. You can use the same match conditions (verbatim) as in Franck Dernoncourt's answer, but you don't have to pipe between tools, and having the regular expression match on a per-packet-content basis rather than per-line as in grep is nicer. ngrep -i 'pass=|pwd=|log=|login=|user=|username=...


3

You can use dsniff: free and open-source works on Linux can sniff network data, such as POP3 password: dsniff -i any 'tcp port pop3' Sample output: dsniff: listening on any [tcp port pop3] ----------------- 11/18/10 10:41:01 tcp xxx.48323 -> remote.host.110 (pop3) USER user1 PASS pass-for-user1 ----------------- 11/18/10 10:41:28 tcp xxx.48321 -> ...


2

You can use SniffPass: free but not open-source works on Windows 98/ME/NT/2000/XP/2003/Vista/7 NirSoft quality can capture the passwords of the following Protocols: POP3, IMAP4, SMTP, FTP, and HTTP (basic authentication passwords).


1

I use Mail Backup X. I had tested a few more mail backup tools like Horcrux, however only Mail Backup X met my needs. It backs up my gmail and Yahoo accounts. Furthermore, I am saving them offline to an external drive. It works on both IMAP as well as POP.


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