posts tagged as spam

spamming groups

Friday, 29 February 2008 5:32 pm by noel
posted in tech | tags: , ,

spamming yahoo groupsi noticed this today. i started receiving bounced mails from yahoo! groups. it appears that spammers are now trying to spam the yahoo! mailing lists. cute. they would invent an e-mail address and add that to my domain name and then use the result e-mail address to try and join a group, send mail to another group, etc.

nice try. but no dice. fortunately those guys at y! groups keep trying to improve the service.

it also noticed something in two or three of the groups i manage. an e-mail address would either subscribe via web or mail and after a few days it would unsubscribe. i would assume that the person was trying to mine the group for e-mail addresses or send out spam to the group. in all the groups i manage, database is only viewable by the owner or moderator of the group. they are also the only ones that can send to the group. no one else.

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bcc

Thursday, 31 January 2008 1:32 pm by noel
posted in people, tech | tags: , , ,

i get a lot of forwarded mails from friends containing jokes, quotes, stories and whatever. when i open the mail i see this longish list of people which forwarded the mail to their friends who forwarded to their friends, etc. until the list of recipients is nine times longer than the actual message at which point it eventually arrives in my box.

this list of people usually includes names of the recipients and, of course, their e-mail addresses. this is a valuable resource for spammers. imagine that. someone else has gathered all the information they need for their spam bots and it just arrives in their mailbox. at no cost and all with very little work. they send their thanks, by the way. :twisted:

use bccplease don’t just forward that joke. take a little time to “clean it” of the e-mail addresses of others. after all, it came from a friend and you’re sending it out to your friends. give them that little courtesy along with your joke, quotes, stories and whatever.

i suggest that you place your own e-mail address in the to: field and then put all rest of the e-mail addresses of the people you’re sending that joke to in the bcc — blind copy furnish. this way, no other eyes will see the addresses of your friends.

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spoofed mail forensics

Sunday, 27 January 2008 4:32 pm by noel
posted in tech | tags: , , , ,

image 1: spoofed e-mailthe other day i received an e-mail which looked a lot like spam but it didn’t get filtered. i took a closer look and i found out that the address of the sender was my e-mail address and it was sent to the same. i’m absolutely sure i didn’t send anything with a subject “january 74% off” let alone to myself. and with yahoo! doing my mail serving needs i’m sure i didn’t. they would only allow a limited number of e-mails per day.

image 2: blocked imagesthis is interesting. curiosity gets the best of me and i opened it up. it just contained an image. i set my mail reader not to show me any images when i open an e-mail. i’m not about to start with this one.

the juicier part would be to look at the e-mail headers. its that part of the message that is not normally seen by the reader. in part, it is used as a troubleshooting aid to look for kinks in the image 3: full e-mail headermailing system. it has the data from what service provider it came from, which mail server received it, and where it was sent. all e-mail programs would have a way of letting you see the full headers of a particular e-mail. i use yahoo’s web interface and the headers is located on the right side of the open e-mail message.

click on the full header and you’ll get to some of the e-mail internals.

image 4: full message headers

the first line in the screenshot above is suppose to be the sending address — who sent it. the second line with the return path is the e-mail address that will be put in the to: field when you click on reply. the fifth to seventh line (received) is interesting. it shows where the e-mail was supposedly sent from — a dsl subscriber in russia — and which server in yahoo! received it.

i got another spam with the same subject and opening the headers reveals something similar but the fifth line (received) is different. it says intel sent it but when i checked the ip address the sender is from poland. hmmm…

full message headers 2

two similar mails from two different countries. this leads me to the conclusion that the spam mail wasn’t sent by me (or yahoo!) but by a botnet that is posing as me.

you may have received something similar so you can likely check it using the steps i took.

disclosure: i do not like spam and i do not and will not knowingly send any. i take great pains to make sure of that. my firewall here only allows sending via one particular yahoo! smtp server. and we don’t even use pop mail. all of us use yahoo!’s webmail interface.

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spam. live with it.

Saturday, 12 January 2008 8:22 am by noel
posted in tech | tags: , , ,

askimet comment spamthere is e-mail spam and, if you have a blog, there’s comment spam.

its always going to be there. its a fact of internet life. you live with it.

if you can’t then i can think of a thumbful of ways to avoid it:

those should be easy enough to follow. ;) but beware. if you stray from those instructions you will get unwanted stuff in your net space. guaranteed.

34k+ spam mailshould you decide to live like the rest of us, there are software and web services out there that can actually help in keeping your spam at a manageable level.

for e-mails i use yahoo’s spamguard plus. it had its ups and downs when i started using it but once the program started learning from me which e-mail message is spam and which is not then my inbox started to quiet down. its still not perfect though and i get to see 2 or 3 spam mail a day. but that’s good enough considering that my bulk folder contains more than 34,000 spam messages as a write this. :shock:

i should mention that spamguard plus is only available with yahoo! webhosting and business mail service.

the standard yahoo! mail gets spamguard (no ‘plus’). that’s the version that doesn’t have the learning capability of the plus version but at least its still there. better than nothing.

for comment spam, i use askimet running with wordpress. it doesn’t catch everything and once in a while i still see one or two comment spam in the moderation queue but it does filter most of it.

the point is, its next to useless to get all worked up and get your blood pressure all ballistic about one or two unwanted e-mails/comments which may be from legit sources anyway. just mark them as spam if you don’t want them. let the software do the rest for you.

remember, its always going to be there. its a fact of internet life. you live with it, set it aside and then move on to other mundane things. ;)

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splogs

Thursday, 10 January 2008 3:17 pm by noel
posted in tech | tags: , ,

splogs is defined as spam-saturated blogs or blogs full of comment spam.

get askimet or defensio people.

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