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Spam is the use of electronic messaging systems (including most broadcast media, digital delivery systems) to send unsolicited bulk messages indiscriminately.
2
votes
Spam e-mails near events, geographically driven?
And then there is the option of just being a coincidence, i.e. that you wonder why you got the mail which fits your situation while ignoring all the other spam mails which don't fit your situation. … spam. …
2
votes
Accepted
Why are packets constantly being sent to international ISPs?
Given the uncommon high ports and that the hostnames look like IP addresses from normal consumers I would suggest that this is peer-to-peer traffic. There are several legal or mostly legal programs wh …
3
votes
Accepted
How does SMTP facilitate sending spam?
Thus you can easily and cheaply spam lots of recipients, much cheaper than you could do with snail mail. …
1
vote
Accepted
Reducing the success ratio of email harvesting
But as far as I know such fake accounts are still used to fight spam, although in different ways:
Since spammer don't handcraft a new spam mail for each recipient but base mails on templates such dummy … accounts are actually used to get early access to new spam templates. …
1
vote
Stopping a phishing email by blocking the ip address of the sender
that depending on the path of the mail there might be several MTA involved and any MTA can change the header and the original sender can also add some fake Received-Headers to the mail.
... lot of spam … Spam/Phishing is often sent using rented botnets, i.e. the same mail comes from lots of different source IP address. Assuming the same sender IP all the time and blocking it would thus not help. …
1
vote
Accepted
Process of mail analysis
What Symantec does with the specific mail is probably their secret sauce and also depends on the mail. But common things are
Adding "signatures" to anti malware programs in case the mail contained …
1
vote
Accepted
Are there domains available to security companies for testing spam?
Based on the analysis of the mail header shown and the provided information:
The initial Received header (at the bottom) shows from which IP address this mail was sent in the first place. According …
4
votes
I received a spam, how can I understand it in order to report it?
I don't think that it makes any more sense to report such a single spam by yourself. You are very lucky or you have a provider with a good spam filter if you don't get lots of these spam. … Also spam filters inside modern mail clients usually do a good job of detecting spam as long as any undetected spam is marked as such so that the filter can learn. …
7
votes
Accepted
Getting about 6-7 spam emails every minute
The messages you show mean that somebody is using your email address as a sender. This might mean that your mail account is compromised but it can also be that the attacker got information about your …
3
votes
Where can I get a list of "bad" IP addresses that are likely to be used by attackers or spam...
UPDATE: ideally I want it to be a service call so I can call it using HttpClient or with JSON from my web page and get a yes/no (I find it hard to believe that no one has yet created such a web ser …
2
votes
Accepted
E-mail forensics for dummies
First, make sure that this is really spam and that it is impossible or useless to complain directly to the sender of the mail. … ...
inetnum: 91.185.198.0 - 91.185.198.255
netname: Telemach-NET
descr: Broadband Network Services
If you feel that the domain owner misuses this network (for example to send spam …
1
vote
Accepted
Why isn't email filtered when using contact form
To fight the amount of spam companies therefore employ heavy filtering so that most of the spam gets automatically detected. … This might also result in false positives, i.e. non-spam messages treated as spam. …
1
vote
Simple Mail Delivery Protocol (SMDP), where is it today? what do you think of it?
From the paper:
... we presented the principle of operation for our protocol. For the future we plan to develop the software to implement SMDP and operate and evaluate a
pilot based on our desi …
1
vote
Difference between local and central anti-spam
Many mail programs like for example Thunderbird have a built-in spam filter. … The main difference from this to most central spam filters is that it gets trained by the user and thus is adjusted to what the users typically receives as spam and ham and what the users considers spam …
3
votes
Accepted
Avoiding redirects
does every redirect which is not issued by javascript only possible if the http return code is different from 200?)
You have HTTP redirects with status code 30x. Then you have script based redire …